Histology of lymphatic vessels
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The document summarizes the lymphatic system. It has two main components: the lymph vascular system and lymph nodes. The lymph vascular system is made up of lymph capillaries that drain tissue fluid and transport it through lymphatic vessels to lymph nodes, where particulate matter is filtered out. The filtered lymph then drains into two large trunks, the thoracic duct and right lymphatic duct, which empty into veins.
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Lymphatic system
The lymphatic system consists of lymph and lymphatic vessels that transport lymph throughout the body. Lymph is interstitial fluid that has entered lymphatic capillaries and contains lymphocytes, macrophages, viruses, bacteria, and cellular debris. The main components of the lymphatic system are lymph, lymphatic vessels, lymph nodes, lymphatic trunks and ducts, and lymphatic tissue. Lymph flows from lymphatic capillaries through vessels, nodes, trunks and ducts and eventually returns to the blood circulation via the subclavian veins. The lymphatic system functions to transport fluids and nutrients, support immune responses, and absorb dietary fats.
Esophagus anatomy and histology
This document describes the anatomy and histology of the esophagus. It notes that the esophagus has four main layers: mucosa, submucosa, muscularis, and serosa/adventitia. The mucosa contains stratified squamous epithelium and esophageal glands. The submucosa contains dense connective tissue and esophageal glands. The muscularis externa contains both skeletal and smooth muscle fibers arranged in inner circular and outer longitudinal layers. Nerves that innervate the esophagus include the enteric nervous system and sympathetic and parasympathetic pathways.
Lymphatic system
The lymphatic system is a network of tissues and organs that help rid the body of toxins, waste and other unwanted materials. The primary function of the lymphatic system is to transport lymph, a fluid containing infection-fighting white blood cells, throughout the body.
The Anatomy of Lymphatic System
The lymphatic system includes lymph vessels, lymph nodes, and lymph fluid that carry excess fluid from tissues and filter pathogens. It is part of the circulatory system and immune system. Lymph fluid is formed from plasma that leaks from blood vessels into tissues and is transported through lymph vessels to lymph nodes, which filter the lymph and contain immune cells. The filtered lymph then returns to the bloodstream through two main lymphatic ducts. Lymphocytes produced in bone marrow and thymus gland are key immune cells that the lymphatic system helps transport and activate against foreign pathogens.
histology of lymphatic system
This document summarizes the histology of the lymphatic system. It describes the main lymphoid organs as lymph nodes, spleen, thymus, and tonsils. Lymph nodes contain an outer cortex with lymphoid nodules and germinal centers, and an inner medulla with medullary cords and sinuses. The spleen has a capsule dividing it into white pulp with lymphoid nodules and red pulp with splenic cords and sinusoids. The thymus has a dark staining cortex containing immature lymphocytes and a light staining medulla with thymic corpuscles. Tonsils consist of lymphoid nodules in crypts, covered by stratified squ
Body cavities
The document discusses the major body cavities in humans. There are two main cavities - the dorsal cavity which protects the nervous system and is divided into the cranial cavity housing the brain and vertebral cavity housing the spinal cord, and the ventral cavity which houses the internal organs. The ventral cavity is further divided into the thoracic cavity containing the lungs, heart and other thoracic organs, and the abdominopelvic cavity containing the stomach, intestines, and other abdominal and pelvic organs. The document also briefly mentions other body cavities like the oral, nasal, orbital, middle ear and synovial cavities.
Lymph and lymphatic system
The document provides an overview of the lymphatic system, including its history, development, components, and functions. It discusses how the lymphatic system developed from lymph sacs in the embryo and transformed into nodes. The key components are lymphatic capillaries that collect fluid from tissues, vessels that connect to nodes, ducts like the thoracic duct that return lymph to blood circulation, and lymphoid organs like the thymus, bone marrow, spleen and nodes that help fight infection. The lymphatic system works to remove excess fluid, distribute nutrients, and fight pathogens throughout the body.
Lymphatic system: Anatomy and Physiology
The lymphatic system is part of the immune system. It also maintains fluid balance and plays a role in absorbing fats and fat-soluble nutrients.
The lymphatic or lymph system involves an extensive network of vessels that passes through almost all our tissues to allow for the movement of a fluid called lymph. Lymph circulates through the body in a similar way to blood.
There are about 600 lymph nodes in the body. These nodes swell in response to infection, due to a build-up of lymph fluid, bacteria, or other organisms and immune system cells.
A person with a throat infection, for example, may feel that their "glands" are swollen. Swollen glands can be felt especially under the jaw, in the armpits, or in the groin area. These are, in fact, not glands but lymph nodes.
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Lymphatic system
The lymphatic system consists of lymph and lymphatic vessels that transport lymph throughout the body. Lymph is interstitial fluid that has entered lymphatic capillaries and contains lymphocytes, macrophages, viruses, bacteria, and cellular debris. The main components of the lymphatic system are lymph, lymphatic vessels, lymph nodes, lymphatic trunks and ducts, and lymphatic tissue. Lymph flows from lymphatic capillaries through vessels, nodes, trunks and ducts and eventually returns to the blood circulation via the subclavian veins. The lymphatic system functions to transport fluids and nutrients, support immune responses, and absorb dietary fats.
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This document describes the anatomy and histology of the esophagus. It notes that the esophagus has four main layers: mucosa, submucosa, muscularis, and serosa/adventitia. The mucosa contains stratified squamous epithelium and esophageal glands. The submucosa contains dense connective tissue and esophageal glands. The muscularis externa contains both skeletal and smooth muscle fibers arranged in inner circular and outer longitudinal layers. Nerves that innervate the esophagus include the enteric nervous system and sympathetic and parasympathetic pathways.
Lymphatic system
The lymphatic system is a network of tissues and organs that help rid the body of toxins, waste and other unwanted materials. The primary function of the lymphatic system is to transport lymph, a fluid containing infection-fighting white blood cells, throughout the body.
The Anatomy of Lymphatic System
The lymphatic system includes lymph vessels, lymph nodes, and lymph fluid that carry excess fluid from tissues and filter pathogens. It is part of the circulatory system and immune system. Lymph fluid is formed from plasma that leaks from blood vessels into tissues and is transported through lymph vessels to lymph nodes, which filter the lymph and contain immune cells. The filtered lymph then returns to the bloodstream through two main lymphatic ducts. Lymphocytes produced in bone marrow and thymus gland are key immune cells that the lymphatic system helps transport and activate against foreign pathogens.
histology of lymphatic system
This document summarizes the histology of the lymphatic system. It describes the main lymphoid organs as lymph nodes, spleen, thymus, and tonsils. Lymph nodes contain an outer cortex with lymphoid nodules and germinal centers, and an inner medulla with medullary cords and sinuses. The spleen has a capsule dividing it into white pulp with lymphoid nodules and red pulp with splenic cords and sinusoids. The thymus has a dark staining cortex containing immature lymphocytes and a light staining medulla with thymic corpuscles. Tonsils consist of lymphoid nodules in crypts, covered by stratified squ
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The document provides an overview of the lymphatic system, including its history, development, components, and functions. It discusses how the lymphatic system developed from lymph sacs in the embryo and transformed into nodes. The key components are lymphatic capillaries that collect fluid from tissues, vessels that connect to nodes, ducts like the thoracic duct that return lymph to blood circulation, and lymphoid organs like the thymus, bone marrow, spleen and nodes that help fight infection. The lymphatic system works to remove excess fluid, distribute nutrients, and fight pathogens throughout the body.
Lymphatic system: Anatomy and Physiology
The lymphatic system is part of the immune system. It also maintains fluid balance and plays a role in absorbing fats and fat-soluble nutrients.
The lymphatic or lymph system involves an extensive network of vessels that passes through almost all our tissues to allow for the movement of a fluid called lymph. Lymph circulates through the body in a similar way to blood.
There are about 600 lymph nodes in the body. These nodes swell in response to infection, due to a build-up of lymph fluid, bacteria, or other organisms and immune system cells.
A person with a throat infection, for example, may feel that their "glands" are swollen. Swollen glands can be felt especially under the jaw, in the armpits, or in the groin area. These are, in fact, not glands but lymph nodes.
Lymphoid tissue
The lymphatic system consists of lymph, lymph nodes, lymph vessels, the spleen, thymus, tonsils, bone marrow and skin-associated lymphoid tissues. The main cells of the lymphatic system are lymphocytes such as B cells, T cells, natural killer cells, and supporting cells that interact with and present antigens to lymphocytes. The lymphatic system protects the body from foreign materials, assists in fluid circulation, and transports dietary fats. The thymus gland aids in the maturation of T cells while the spleen filters blood and mounts an immune response to antigens. Lymph nodes are located around arteries and veins and filter lymph fluid draining tissues.
Tissues
Tissues are aggregations of cells that perform specific functions. There are four main types of tissues: epithelial, connective, muscular, and nervous. Epithelial tissues cover surfaces, line cavities, and form glands. There are two categories of epithelial tissue: membranous and glandular. Membranous epithelial tissues are classified based on cell shape (squamous, cuboidal, columnar) and cell layer arrangement (simple, stratified, pseudostratified, transitional). Glandular epithelial tissues are specialized secretory tissues that form exocrine and endocrine glands. Exocrine glands are further classified based on their duct system and secretory structures.
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1) The trachea is a cartilaginous tube that extends from the larynx to the carina where it divides into the two main bronchi, one for each lung.
2) The right bronchus is wider, shorter and more vertical than the left bronchus.
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Lymphatic system
Lymphatic SYSTEM
The lymphatic system involves an extensive network of vessels that passes through almost all our tissues to allow for the movement of a fluid called… lymph.
Since the lymphatic system does not have a heart to pump it, its upward movement depends on the motions of the muscle and joint pumps.
There are about 600 lymph nodes in the body. These nodes swell in response to infection, due to a build-up of lymph fluid, bacteria, or other organisms.
A person with a throat infection, for example, may feel that their "glands" are swollen.
Swollen glands can be felt especially under the jaw, in the armpits, or in the groin area.
Swollen glands can be felt especially under the jaw, in the armpits, or in the groin area. These are, in fact, not glands but lymph nodes.
Fast facts about the lymphatic system
The lymphatic system plays a key role in immunity, fluid balance, and absorption of fats and fat-soluble nutrients.
The lymph nodes swell in response to infection, due to a build-up of lymph fluid, bacteria, or other organisms and immune system cells.
If lymph nodes remain swollen, if they are hard and rubbery, and if there are other symptoms, you should see a doctor.
The lymphatic system has three main functions:
It maintains the balance of fluid between the blood and tissues, known as fluid homeostasis.
It forms part of the body's immune system and helps defend against bacteria and other intruders.
It facilitates absorption of fats and fat-soluble nutrients in the digestive system.
BLOOD PLASMA
The lymphatic system consists of lymph vessels, ducts, nodes, and other tissues.
Around 2 liters of fluid leak from the cardiovascular system into body tissues every day. The lymphatic system is a network of vessels that collect these fluids, or lymph. Lymph is a clear fluid that is derived from blood plasma.
The lymph vessels form a network of branches that reach most of the body's tissues. They work in a similar way to the blood vessels.
The lymph vessels work with the veins to return fluid from the tissues.
The lymph vessels work with the veins to return fluid from the tissues.
Unlike blood, the lymphatic fluid is not pumped but squeezed through the vessels when we use our muscles.
Lymph is drained progressively towards larger vessels until it reaches the two main channels, the lymphatic ducts in our trunk.
In the lymph nodes, immune cells assess for foreign material, such as bacteria, viruses, or fungus.
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Histology of Lymphatic system
The lymphatic system transports lymph fluid and assists the immune system. It is composed of lymphatic vessels, lymph nodes, the spleen, thymus, and lymphatic cells. Lymph fluid is collected from tissues by lymphatic capillaries and transported through a series of vessels, nodes, and ducts where it is filtered for pathogens. The system's immune cells help fight infection and disease. As the body ages, the thymus and immune function decline, making elderly people more susceptible to illness.
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Slideshow is from the University of Michigan Medical School's M1 Cells and Tissues Sequence
View additional course materials on Open.Michigan:
openmi.ch/med-M1CellsTissues
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This document provides an overview of the lymphatic system. It defines lymph as tissue fluid that has entered lymph capillaries. Lymph vessels carry lymph and drain into two main ducts: the thoracic duct and right lymphatic duct. The document describes key components like lymph nodes, spleen, thymus, and tonsils. It explains the functions of the lymphatic system in returning tissue fluid to circulation, transporting lymphocytes, filtering microorganisms, and producing antibodies for protection.
Histology of blood vessels
The document discusses the components of the circulatory system, with a focus on blood vessels. It describes the three layers (tunics) that make up the basic structure of blood vessels - the tunica intima, tunica media, and tunica adventitia. It then discusses the different types of blood vessels in more detail - arteries (elastic and muscular), arterioles, capillaries, and veins. The key differences between elastic and muscular arteries are highlighted.
Lymphatic
The lymphatic system returns fluid to the bloodstream, removes antigens from tissues, and exposes antigens to the immune system. It consists of lymph, lymphatic vessels, lymph nodes, diffuse lymphoid tissues like tonsils, and lymphoid organs like the spleen and thymus gland. Lymph passes through a series of vessels and lymph nodes before draining into the subclavian veins near the neck.
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Tissues are aggregations of cells that perform specific functions. There are four main types of tissues: epithelial, connective, muscular, and nervous. Epithelial tissues cover surfaces, line cavities, and form glands. There are two categories of epithelial tissue: membranous and glandular. Membranous epithelial tissues are classified based on cell shape (squamous, cuboidal, columnar) and cell layer arrangement (simple, stratified, pseudostratified, transitional). Glandular epithelial tissues are specialized secretory tissues that form exocrine and endocrine glands. Exocrine glands are further classified based on their duct system and secretory structures.
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The document provides an overview of the anatomy of the trachea and lungs. It discusses the following key points:
1) The trachea is a cartilaginous tube that extends from the larynx to the carina where it divides into the two main bronchi, one for each lung.
2) The right bronchus is wider, shorter and more vertical than the left bronchus.
3) The lungs are paired organs located in the thoracic cavity. Each lung has an apex, base, hilum and lobes that are further divided into bronchopulmonary segments supplied by the bronchial tree.
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Lymphatic system
The lymphatic system is part of the circulatory system and immune system. It is composed of lymph capillaries that branch throughout the body and collect lymph fluid high in white blood cells. The lymph vessels drain the lymph fluid into the lymph nodes where the fluid is filtered before emptying into the bloodstream via two main lymphatic ducts. The lymphatic system also includes the thymus, spleen, bone marrow, and collections of lymphatic tissue in the respiratory and digestive tracts that help fight infection and produce immune cells.
Histology of Cardiovascular system
This document discusses the structure of blood vessels. It describes the layers of the aorta wall - tunica intima, tunica media, and tunica adventitia. The tunica media is the thickest layer and contains both smooth muscle cells and elastic fibers. Cross-sections of a muscular artery and vein are also shown, noting the prominent internal elastic lamina in the artery and thinner wall of the vein. Muscular arteries contain more smooth muscle and less elastin than elastic arteries.
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1. The document describes the anatomy and features of the jejunum, ileum, and large intestine.
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Lymphatic system
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The lymphatic system involves an extensive network of vessels that passes through almost all our tissues to allow for the movement of a fluid called… lymph.
Since the lymphatic system does not have a heart to pump it, its upward movement depends on the motions of the muscle and joint pumps.
There are about 600 lymph nodes in the body. These nodes swell in response to infection, due to a build-up of lymph fluid, bacteria, or other organisms.
A person with a throat infection, for example, may feel that their "glands" are swollen.
Swollen glands can be felt especially under the jaw, in the armpits, or in the groin area.
Swollen glands can be felt especially under the jaw, in the armpits, or in the groin area. These are, in fact, not glands but lymph nodes.
Fast facts about the lymphatic system
The lymphatic system plays a key role in immunity, fluid balance, and absorption of fats and fat-soluble nutrients.
The lymph nodes swell in response to infection, due to a build-up of lymph fluid, bacteria, or other organisms and immune system cells.
If lymph nodes remain swollen, if they are hard and rubbery, and if there are other symptoms, you should see a doctor.
The lymphatic system has three main functions:
It maintains the balance of fluid between the blood and tissues, known as fluid homeostasis.
It forms part of the body's immune system and helps defend against bacteria and other intruders.
It facilitates absorption of fats and fat-soluble nutrients in the digestive system.
BLOOD PLASMA
The lymphatic system consists of lymph vessels, ducts, nodes, and other tissues.
Around 2 liters of fluid leak from the cardiovascular system into body tissues every day. The lymphatic system is a network of vessels that collect these fluids, or lymph. Lymph is a clear fluid that is derived from blood plasma.
The lymph vessels form a network of branches that reach most of the body's tissues. They work in a similar way to the blood vessels.
The lymph vessels work with the veins to return fluid from the tissues.
The lymph vessels work with the veins to return fluid from the tissues.
Unlike blood, the lymphatic fluid is not pumped but squeezed through the vessels when we use our muscles.
Lymph is drained progressively towards larger vessels until it reaches the two main channels, the lymphatic ducts in our trunk.
In the lymph nodes, immune cells assess for foreign material, such as bacteria, viruses, or fungus.
Mesentery
The document discusses the mesentery and peritoneum. It defines the mesentery as the double layer of peritoneum that suspends the small intestine from the posterior abdominal wall. The peritoneum is the thin serous membrane that lines the abdominal cavity and covers most abdominal organs. Between the two layers of peritoneum are blood vessels, lymph vessels, and nerves. The document also describes the histological appearance, embryological development, clinical significance and functions of the mesentery and peritoneum.
Histology of circulatory system
functions of circulatory system
histology of the heart, histology of the arteries, histology of the
capillaries, histology of the veins
Histology of Stomach
The stomach is a dilated segment of the digestive tract that adds fluid to ingested food. It has several regions including the cardiac, fundus, body, and pylorus. The fundus is the uppermost curve located to the left of the cardia. The body and fundus contain several cell types including parietal cells that produce hydrochloric acid, chief cells that produce enzymes, and mucous neck cells. The pylorus is the cone-shaped section that connects the stomach to the small intestine. It contains gastric glands and pits. The stomach has four principal layers: mucosa, submucosa, muscularis externa, and serosa.
Histology of respiratory system
The respiratory system can be divided into a conducting portion and respiratory portion. The conducting portion includes the nasal cavity, pharynx, larynx, trachea, and bronchi, while the respiratory portion includes bronchioles, alveolar ducts, and alveoli where gas exchange occurs. As the passageways branch from the trachea into smaller bronchioles, the epithelium changes from pseudostratified ciliated columnar to simple cuboidal or squamous, and cartilages and glands disappear. In the alveoli, a thin blood-air barrier allows for oxygen and carbon dioxide exchange between the alveolar air space and capillaries.
Introduction of GIT and stomach
The document provides an overview of the gastrointestinal tract (GIT) and stomach. It discusses that the GIT performs digestion, absorption and waste excretion. The stomach is the widest part of the GIT and is J-shaped. The stomach is located in the epigastric, umbilical and left hypochondriac regions. The wall of the stomach has a lumen, mucosa, submucosa, muscularis layer and serosa. The stomach receives blood supply from branches of the coeliac trunk and is innervated by the vagus nerve. Peptic ulcers are commonly caused by H. pylori infection or NSAIDs and can form in the stomach or duodenum.
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Cartilage is a resilient and smooth elastic connective tissue, a rubber-like padding that covers and protects the ends of long bones at the joints, and is a structural component of the rib cage, the ear, the nose, the bronchial tubes, the intervertebral discs, and many other body components.
Histology
Junqueira’s Basic Histology Text and Atlas, 15th Ed
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The document discusses the structure and function of the integumentary system. It describes the two main layers of the skin - the epidermis and dermis - as well as their sublayers and cellular composition. The epidermis is composed of stratified squamous epithelium consisting of basal, spinous, granular, and horny layers. The dermis lies below the epidermis and contains hair follicles, sebaceous glands, and sweat glands. The skin provides protection from external factors and regulates fluid balance.
Histology of Female reproductive system.2.2015.
This document provides a histological overview of the female reproductive system including the corpus luteum, placenta, mammary gland, and umbilical cord. It describes the microscopic structure of each tissue, including the cellular composition and organization. For example, it notes that the corpus luteum contains granulosa and theca lutein cells and that the placenta facilitates maternal-fetal exchange through chorionic villi in the decidua basalis.
Histology of Lymphatic system
The lymphatic system transports lymph fluid and assists the immune system. It is composed of lymphatic vessels, lymph nodes, the spleen, thymus, and lymphatic cells. Lymph fluid is collected from tissues by lymphatic capillaries and transported through a series of vessels, nodes, and ducts where it is filtered for pathogens. The system's immune cells help fight infection and disease. As the body ages, the thymus and immune function decline, making elderly people more susceptible to illness.
09.22.08: Histology of the Peripheral Nervous System
Slideshow is from the University of Michigan Medical School's M1 Cells and Tissues Sequence
View additional course materials on Open.Michigan:
openmi.ch/med-M1CellsTissues
Lymphatic system
This document provides an overview of the lymphatic system. It defines lymph as tissue fluid that has entered lymph capillaries. Lymph vessels carry lymph and drain into two main ducts: the thoracic duct and right lymphatic duct. The document describes key components like lymph nodes, spleen, thymus, and tonsils. It explains the functions of the lymphatic system in returning tissue fluid to circulation, transporting lymphocytes, filtering microorganisms, and producing antibodies for protection.
Histology of blood vessels
The document discusses the components of the circulatory system, with a focus on blood vessels. It describes the three layers (tunics) that make up the basic structure of blood vessels - the tunica intima, tunica media, and tunica adventitia. It then discusses the different types of blood vessels in more detail - arteries (elastic and muscular), arterioles, capillaries, and veins. The key differences between elastic and muscular arteries are highlighted.
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The lymphatic system returns fluid to the bloodstream, removes antigens from tissues, and exposes antigens to the immune system. It consists of lymph, lymphatic vessels, lymph nodes, diffuse lymphoid tissues like tonsils, and lymphoid organs like the spleen and thymus gland. Lymph passes through a series of vessels and lymph nodes before draining into the subclavian veins near the neck.
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Lymph is a clear fluid that forms when blood plasma leaks out of capillaries into tissues. It is collected by lymphatic capillaries and vessels before entering lymph nodes and eventually returning to the bloodstream via the thoracic duct. The lymphatic system helps maintain fluid balance in the body, transports nutrients, and plays an important role in immunity through lymph nodes and vessels that contain lymphocytes.
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The lymphatic system consists of lymph, lymphatic vessels, lymphatic tissue, and lymphatic organs. Lymph is a clear fluid that transports tissue fluid, lymphocytes, bacteria, and cancer cells through lymphatic vessels and capillaries. The vessels converge in lymph nodes before draining into the subclavian veins. Primary lymphatic organs are the red bone marrow and thymus, which produce lymphocytes. Secondary lymphatic organs include lymph nodes, tonsils, spleen, Peyer's patches, and appendix, which filter lymph and mount immune responses.
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The lymphatic system consists of lymph vessels, lymph nodes, and lymph organs such as the spleen and thymus. It works with the circulatory system to return excess tissue fluid to the bloodstream and transports white blood cells to fight infection. Lymph vessels collect fluid from tissues into lymph nodes which filter the lymph and expose antigens to immune cells before lymph drains into the bloodstream via lymph ducts. The spleen and thymus are also involved in immune functions like filtering blood and maturation of immune cells.
Lymphatic system ppt
The lymphatic system is a drainage system that works alongside the venous system to remove tissue fluid from interstitial spaces. Lymph capillaries absorb excess tissue fluid and transport it through lymphatic vessels to lymph nodes, where it is filtered. The filtered lymph then drains into either the thoracic duct or right lymphatic duct and returns to the bloodstream. The lymphatic system removes larger particles from tissues and transports mature lymphocytes throughout the body. Key components include lymph vessels, central lymphoid tissues like bone marrow and thymus, peripheral lymphoid organs like lymph nodes and spleen, and circulating lymphocytes in the bloodstream.
03 Functional anatomy of lymphatic system.ppt
The lymphatic system consists of lymph vessels, lymph nodes, lymph, and organs like the spleen and thymus. It protects the body from foreign substances, assists with fluid circulation, and transports dietary fats. Lymph is collected by lymph capillaries and passes through lymph nodes, which filter the lymph and return white blood cells to the bloodstream. The thoracic duct and right lymphatic duct return lymph to the blood circulation. Lymph nodes throughout the body filter lymph from different regions. The spleen and thymus are lymphatic organs that help fight infection and mature immune cells.
Circulatry system
The circulatory system comprises the blood and lymphatic vascular systems. The blood vascular system includes the heart, arteries, capillaries and veins. Arteries carry oxygenated blood away from the heart while veins return deoxygenated blood back to the heart. Capillaries allow for the exchange of water, oxygen and nutrients between blood and tissues. Both arteries and veins are composed of three layers - tunica intima, media and adventitia - though arteries have thicker muscular layers than veins to withstand higher blood pressures.
Anatomy and biology of immune system lecture notes
The immune system consists of primary organs like the bone marrow and thymus where immune cells develop, and secondary organs like lymph nodes, spleen, tonsils, and skin where immune responses occur. The lymphatic system transports lymph through vessels from tissues to lymph nodes, which filter the lymph and activate immune cells. Lymph then drains into the blood circulation through two main ducts.
Assessment of lymphatic system
The lymphatic system transports fluid and immune cells throughout the body, removes cellular waste and pathogens, and presents antigens to immune cells. It consists of lymphatic vessels, lymph nodes, the spleen, thymus, tonsils, and bone marrow. Lymph fluid is collected from tissues by lymphatic capillaries and passes through lymph nodes, which filter the lymph and harbor immune cells. The lymph eventually returns to the blood circulation via lymph ducts in the neck. Enlargement of lymph nodes or spleen can indicate infection, inflammation, or cancer that is being assessed through history, exam, labs, and imaging.
lymphoreticular system
The document discusses the anatomy and physiology of the lymphatic system. It describes the development of lymphatic vessels and organs like lymph nodes, spleen, thymus, and tonsils during fetal life. It also explains the structure and functions of these organs. The lymphatic system works with the immune system to produce and transport immune cells and lymph throughout the body. It helps maintain fluid balance and transports fat, proteins, and other molecules before returning to the bloodstream.
Lymphatic system (1)
The lymphatic system includes tissues and organs that produce, store, and carry white blood cells to fight infections. It develops beginning in the fifth week of embryonic life from lymph sacs that become lymph vessels and organs. The main components are lymph, lymph organs like lymph nodes and the spleen and thymus, lymph vessels, and lymphoid tissues. The lymphatic system works to drain fluid into the bloodstream, filter lymph and blood, and help the body fight infections by producing lymphocytes and macrophages.
Lymphatic system
The document summarizes the key components and functions of the lymphatic system. It describes how lymph is formed from interstitial fluid and transported through a network of lymphatic vessels and organs, including lymph nodes and lymph ducts. The main functions of the lymphatic system are to drain fluid from tissues, absorb fatty acids from the gut, produce immune cells, and transport white blood cells throughout the body to fight infection and disease.
lymphatic system-converted.pdf
The lymphatic system helps remove excess fluid from tissues, absorb fats and transport white blood cells and antigens. It comprises a network of lymphatic vessels that carry lymph fluid towards the heart. Lymph fluid is filtered through lymph nodes and transported back into the bloodstream via lymph vessels in one direction towards the heart. The lymphatic system plays an important role in fluid balance and immune function.
Notes on the Lymphatic System
The lymphatic system consists of lymph, lymphatic vessels, lymph nodes, and lymphatic organs. It functions to maintain fluid balance, absorb fats, and aid the immune system. Lymph is clear fluid that forms from tissue fluid and is transported through lymphatic vessels and lymph nodes before draining into the bloodstream. The right lymphatic duct drains the right side of the body while the larger thoracic duct drains the rest of the body before both vessels drain into large veins in the neck. Lymph nodes filter lymph and contain immune cells that fight pathogens. Disease can spread through the lymphatic system as lymph nodes indicate metastasis and infections can occur in vessels.
Lymphatic System
Unit-III, chapter-2- Lymphatic System,
Functions of Lymphatic System,
Major Parts of Lymphatic System,
Composition of Lymph,
Lymph and Lymphatic Capillaries,
Structure of lymph node,
Mechanisms of Lymph Flow,
Functions of Lymph Node,
Mucosa-Associated Lymphoid Tissue (MALT),
As per PCI syllabus,
B. Pharm. First Year,
Human Anatomy and Physiology-I.
BIOLOGY FORM 5 CHAPTER 1: 1.4 THE LYMPHATIC SYSTEM
The lymphatic system collects excess tissue fluid called lymph and returns it to the bloodstream. Lymph is similar to plasma but contains fewer proteins. The lymphatic system helps remove waste, absorb fats, and plays a role in immunity. Lymph enters lymphatic vessels from tissue fluid and is propelled through vessels by muscle contractions before emptying into subclavian veins.
Lecture12 lymphatic system
The document summarizes the microscopic structure and function of lymphatic organs including the thymus, lymph nodes, spleen, and tonsils. It describes the distribution of T and B lymphocytes in these organs. The thymus differentiates T lymphocytes. Lymph nodes contain B and T cell regions and filter lymph. The spleen contains white pulp with B cell follicles and red pulp for filtering blood. Tonsils contain lymphoid tissue in the pharyngeal mucosa and tonsillar crypts.
Blood vessels.2.
The document summarizes the structure and function of blood vessels. It describes the three layers (tunics) that make up arteries and veins, as well as the single-layered endothelium of capillaries. It then compares different types of blood vessels, including elastic and muscular arteries, arterioles, venules and veins. It discusses the roles of each in conducting blood away from the heart in arteries and returning it to the heart in veins. It also describes the structure of capillaries and their role in exchanging materials with tissues.
Lymphaticsystem
The lymphatic system consists of lymph, lymph vessels, lymph nodes, lymph organs (spleen and thymus), and diffuse lymphoid tissue. Lymph is a clear fluid that is similar to blood plasma but lacks proteins. It is formed from interstitial fluid that leaks from blood capillaries. Lymph vessels carry lymph through the body and lymph nodes before returning it to the bloodstream. The spleen, thymus, tonsils and other lymphoid tissues are involved in immune functions like phagocytosis and lymphocyte production.
Similar to Histology of lymphatic vessels (20)
Anatomy and biology of immune system lecture notes
Anatomy and biology of immune system lecture notes
BIOLOGY FORM 5 CHAPTER 1: 1.4 THE LYMPHATIC SYSTEM
BIOLOGY FORM 5 CHAPTER 1: 1.4 THE LYMPHATIC SYSTEM
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Histology of lymphatic vessels
- 2. It circulates blood & lymph; ◦ 1. Blood vascular system (Cardiovascular system) ◦ Heart + blood vessels (arteries, capillaries, veins) ◦ 2. Lymph vascular system ◦ Lymph capillaries, lymphatic vessels, lymphatic ducts
- 3. Most of the tissue fluid formed at the arterial end of capillaries is absorbed back into the blood by the venous ends of the capillaries and the post-capillary venules. The rest of the tissue fluid (10- 20%) is absorbed by the lymphatics which begin blindly in the tissue spaces.
- 4. LYMPH: The tissue fluid flowing in the lymphatics Lymph is clear and colorless CHYLE & LACTEALS: Lymph From small intestine it is milky-white due to absorption of fat & is called chyle, and lymph vessels, the lacteals.
- 5. The lymph capillaries join to form lymphatics, The lymph passes through filters or barriers of the regional lymph nodes which trap the particulate matter. The filtered lymph passes through larger lymphatics collected into two large trunks the thoracic and right lymphatic duct, which pour their lymph into the veins Thoracic duct drains both lower limbs, abdomen, left halves of thorax, head and neck and left upper limb. Right lymphatic duct drains right halves of thorax, head and neck and right upper limb.
- 8. Lymph vessels 1. lymph capillaries join to form lymphatics, 2. larger lymphatics eventually collected into two large 3. trunks, the thoracic duct and right lymphatic duct Central lymphatic tissue 1. bone marrow 2. Thymus Peripheral lymphatic tissue 1. lymph nodes 2. spleen 3. epithelio-lymphoid tissues Circulating lymphocytes 1. In blood about 70% of circulating lymphocytes are T cells, 2. 15% are B cells and 3. 15% are natural killer (NK) cells.
- 12. Delicate endothelial tubes originates from tissues as blind ended vessels. Larger lumen than blood capillaries Form network in spaces between blood capillaries Lined by single layer of endothelial cells (squamous) Special feature Basal lamina is incomplete Intercellular clefts b/w endothelial cells
- 13. Capillaries lined by endothelial cells single layer Basal lamina is incomplete Intercellular cleft between endothelial cells allow entry of macromolecules(proteins, fat in intestine) from interstitial fluid From surrounding C.T anchoing filaments of elastin extends in basal lamina to maintain the patency of Intercellular cleft Overlapping of endothelial cells results in valve formation which prevents the back flow
- 15. Walls are thinner than veins Larger lymphatics 3 layers ◦ Tunica intima, media, adventitia Tunica intima: endothelium + basal lamina elastic, collagen fibers Tunica media: Smooth ms: fibers (circularly arranged) + elastic fibers Tunica Adventitia: thickest coat Collagen+ elastic fibers+ few sm ms: longitudinal arranged
- 18. Similar in structure of same size vein but > Sm ms in T.M Tunica Intima: endothelium ◦ Sub-endothelial layer: C.T + few Sm: ms: fibers ◦ Internal elastic lamina also distinguishable Tunica media: thickest coat Smooth muscle fibers (circular & longitudinally arranged)+ C.T Collagen Tunica adventitia: collagen fibers+ few sm ms fibers