1. The endocrine system regulates processes that happen slowly like growth, metabolism, mood, and development through hormones and glands.
2. Glands produce and secrete hormones into the bloodstream which are chemicals that affect distant cells and organs.
3. Major glands of the endocrine system include the hypothalamus, pituitary gland, thyroid, parathyroids, adrenal glands, pineal body, ovaries/testes, and pancreas.
LYMPHATIC SYSTEM (INTERESTING FACTS ABOUT LYMPHATIC SYSTEM)SohriaAping1
Learn some interesting facts about lymphatic system. Why is it important to our body and system. Knowing something interesting facts makes us happy knowing we knew something that adds to our knowledge and satisfy our curiosity. Know some basic facts about lymphatic system.
Lymphatic system, Human Lymphatic systemAmen Ullah
Tissue fluid (interstitial fluid) that enters the lymphatic vessels.
larger particles that escape into tissue fluid can only be removed via lymphatic system.
LYMPHATIC SYSTEM (INTERESTING FACTS ABOUT LYMPHATIC SYSTEM)SohriaAping1
Learn some interesting facts about lymphatic system. Why is it important to our body and system. Knowing something interesting facts makes us happy knowing we knew something that adds to our knowledge and satisfy our curiosity. Know some basic facts about lymphatic system.
Lymphatic system, Human Lymphatic systemAmen Ullah
Tissue fluid (interstitial fluid) that enters the lymphatic vessels.
larger particles that escape into tissue fluid can only be removed via lymphatic system.
This powerpoint presentation is a perfect Tool to Report about Lymphatic system Comprehensively yet, briefly. It discusses about the importance of the Lymphatic system and its organs and how each of them works or functions. At the end of the slideshow I have added the most commonly acquired Lymphatic diseases. Besides, I have added tips on how to have a healthy Lymphatic system. All of this comes with pictures so it would not be hard to describe it. Hope you guys will find this useful
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.
This PPT covers the concepts of Lymphatic system and Immunity. This includes functions of Lymphatic system, components of Lymphatic system, Lymphatic organs and tissues, formation and flow of lymph and composition of Lymph
Human Anatomy and Physiology - Lymphatic system and body defensesJethro Baltazar
Human Anatomy and Physiology - Lymphatic System and body defenses.
This presentation was made by Jethro Baltazar showing the Lymphatic system, Parts of Lymphatic system, Function of Lymphatic System, The body defenses including the importance of Lymphatic System in defending our body, Disorders of immunity and Developmental Aspects of the Lymphatic System.
Email me at emulsifier1998@gmail.com and jethrobaltazar1998@yahoo.com for more information and permission to download. You can also text me at 09096530340.
This powerpoint presentation is a perfect Tool to Report about Lymphatic system Comprehensively yet, briefly. It discusses about the importance of the Lymphatic system and its organs and how each of them works or functions. At the end of the slideshow I have added the most commonly acquired Lymphatic diseases. Besides, I have added tips on how to have a healthy Lymphatic system. All of this comes with pictures so it would not be hard to describe it. Hope you guys will find this useful
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.
This PPT covers the concepts of Lymphatic system and Immunity. This includes functions of Lymphatic system, components of Lymphatic system, Lymphatic organs and tissues, formation and flow of lymph and composition of Lymph
Human Anatomy and Physiology - Lymphatic system and body defensesJethro Baltazar
Human Anatomy and Physiology - Lymphatic System and body defenses.
This presentation was made by Jethro Baltazar showing the Lymphatic system, Parts of Lymphatic system, Function of Lymphatic System, The body defenses including the importance of Lymphatic System in defending our body, Disorders of immunity and Developmental Aspects of the Lymphatic System.
Email me at emulsifier1998@gmail.com and jethrobaltazar1998@yahoo.com for more information and permission to download. You can also text me at 09096530340.
Anatomy & Physiology - LYMPHATIC SYSTEM PPT By wincy Thirumuruganthiru murugan
lymphatic system:DEFINITION:
The lymphatic system is a network of vessels and organs that regulates the amount of fluid in the human body and defends it against infections
Lymph
Lymph is a transudative fluid that is transparent and yellow. It is formed when fluid leaves the capillary bed in tissues due to hydrostatic pressure.
LYMPHATIC VESSELS :
THE TUBAL STRUCTURES CARRY THE LYMPH FLUID FROM THE TISSUE TO THE BLOOD STREAM.
TYPES OF VESSELS :
AFFERENT VS EFFERENT LYMPH VESSELS:
Lymphatic capillaries
Lymphatic capillaries are the smallest lymphatic vessels that collect the interstitial fluid from the tissues. There are also special types of lymphatic capillaries called lacteals. These capillaries absorb nutrients from the small intestine.
COMPOSITION OF THE LYMPH FLUID:
(around 95%) comprised of water.
The remaining 5% is composed of proteins, lipids, carbohydrates
VOLUME OF LYMPH : The average adult produces between 3-4 litres/ day.
Lymphatic pathway/circulation:
TYPES OF LYMPHATIC VESSELS
SUPERFICIAL AND DEEP LYMPHATIC VESSELS.
LYMPHATIC TRUNKS: The efferent vessels empty into the lymphatic trunks. There are four pairs of trunks:
Lumbar,
Bronchomediastinal,
Subclavian and
Jugular.
LYMPHATIC DUCT:
The lymphatic trunks then converge into the two lymphatic ducts; the right lymph duct and thoracic duct. Lymphatic vessels vs. blood vessels
Lymphoid organs : The Lymphoid organs are the sites where the maturation and proliferation of lymphocytes occur and help carry out various immune functions.
Types of Lymphoid Organs
1. Primary Lymphoid Organs: bone marrow and thymus 2. Secondary Lymphoid Organs: lymph nodes, spleen, tonsils, Peyer’s patches of the small intestine, and Mucosal associated lymphoid tissues (MALT). 3. Tertiary Lymphoid Organs: These organs also play a prominent role in the immune response to cancer.
The Lymphoid Organs Functions
The functions of lymphoid organs are as follows:1. The main function of lymphoid organs is developing and providing immunity to the body.2. The primary lymphoid organs, i.e., the bone marrow and thymus, are the sites where the proliferation and maturation of B-lymphocytes and T-lymphocytes take place.3. Bone marrow is involved in the production of blood cells, i.e., RBCs (or erythrocytes), WBCs (or leucocytes), and Platelets (or thrombocytes).4. The spleen helps in the removal of damaged red blood cells. In foetal conditions, this is also a haematopoietic organ.5. Lymph nodes and spleen helps in filtering out and destroying the unwanted lymphocytes. They also help in maintaining the population of mature lymphocytes to enable the adaptive immune response to begin.6. The tonsils prevent foreign materials and pathogens from entering the body.
Lymphocytes:
Lymphocytes are a type of WBC (leucocytes) that are the main components of our immune system.
Clinical Relevance:
lymphoma,
Lymphatic filariasis, Lymphadenopathy, Lymphedema
THE LYMPHATIC SYSTEM// LYMPH CIRCULATION//LYMPH VESSELS// LYMPH ORGANS Wasim Ak
The lymphatic system is a sub-system of circulatory system and immune system.
It is a type of drainage system of human body which collects all the tissue fluids (constantly leaking out of the bloodstream) and takes back to the major veins through a network of lymph vessels.
The lymphatic system consists of -
Lymph – colourless tissue fluid
Lymphatic organs – Thymus, Bone Marrow, Lymph nodes, Spleen, Tonsils.
Lymph vessels – through which lymph circulation takes place.
It maintains balance between blood and tissues:
Blood volume : 5 – 6L
Interstitial fluid volume: 10 – 11L
Lymph volume: 2 – 3L.
It helps in Immunity.
It fascilitate absorption of fats and hormones:
Breakdown products of fat and fat-soluble vitamins are absorbed into the central lacteals (lymphatic vessels) of the villi.
Normal blood circulation forces fluid out of the bloodstream and that leads in the increase in the interstitial fluid volume.
Due to osmotic pressure this interstitial fluid will be collected by the fine lymphatic capillaries.
Now this fluid is lymph and it has the same mineral distribution as that of blood plasma.
The lymph is transported to lymph nodes and organs where the pathogen will be killed by lymphocytes and lymph will be filtered.
The back flow of lymph is prevented by the valves present in lymph vessels.
Lymph moves from lymphatic vessels to lymphatic trunks, collecting ducts, and ultimately into the Subclavian veins.
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.
Macroeconomics- Movie Location
This will be used as part of your Personal Professional Portfolio once graded.
Objective:
Prepare a presentation or a paper using research, basic comparative analysis, data organization and application of economic information. You will make an informed assessment of an economic climate outside of the United States to accomplish an entertainment industry objective.
Introduction to AI for Nonprofits with Tapp NetworkTechSoup
Dive into the world of AI! Experts Jon Hill and Tareq Monaur will guide you through AI's role in enhancing nonprofit websites and basic marketing strategies, making it easy to understand and apply.
2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
Acetabularia Information For Class 9 .docxvaibhavrinwa19
Acetabularia acetabulum is a single-celled green alga that in its vegetative state is morphologically differentiated into a basal rhizoid and an axially elongated stalk, which bears whorls of branching hairs. The single diploid nucleus resides in the rhizoid.
Model Attribute Check Company Auto PropertyCeline George
In Odoo, the multi-company feature allows you to manage multiple companies within a single Odoo database instance. Each company can have its own configurations while still sharing common resources such as products, customers, and suppliers.
Unit 8 - Information and Communication Technology (Paper I).pdfThiyagu K
This slides describes the basic concepts of ICT, basics of Email, Emerging Technology and Digital Initiatives in Education. This presentations aligns with the UGC Paper I syllabus.
June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...Levi Shapiro
Letter from the Congress of the United States regarding Anti-Semitism sent June 3rd to MIT President Sally Kornbluth, MIT Corp Chair, Mark Gorenberg
Dear Dr. Kornbluth and Mr. Gorenberg,
The US House of Representatives is deeply concerned by ongoing and pervasive acts of antisemitic
harassment and intimidation at the Massachusetts Institute of Technology (MIT). Failing to act decisively to ensure a safe learning environment for all students would be a grave dereliction of your responsibilities as President of MIT and Chair of the MIT Corporation.
This Congress will not stand idly by and allow an environment hostile to Jewish students to persist. The House believes that your institution is in violation of Title VI of the Civil Rights Act, and the inability or
unwillingness to rectify this violation through action requires accountability.
Postsecondary education is a unique opportunity for students to learn and have their ideas and beliefs challenged. However, universities receiving hundreds of millions of federal funds annually have denied
students that opportunity and have been hijacked to become venues for the promotion of terrorism, antisemitic harassment and intimidation, unlawful encampments, and in some cases, assaults and riots.
The House of Representatives will not countenance the use of federal funds to indoctrinate students into hateful, antisemitic, anti-American supporters of terrorism. Investigations into campus antisemitism by the Committee on Education and the Workforce and the Committee on Ways and Means have been expanded into a Congress-wide probe across all relevant jurisdictions to address this national crisis. The undersigned Committees will conduct oversight into the use of federal funds at MIT and its learning environment under authorities granted to each Committee.
• The Committee on Education and the Workforce has been investigating your institution since December 7, 2023. The Committee has broad jurisdiction over postsecondary education, including its compliance with Title VI of the Civil Rights Act, campus safety concerns over disruptions to the learning environment, and the awarding of federal student aid under the Higher Education Act.
• The Committee on Oversight and Accountability is investigating the sources of funding and other support flowing to groups espousing pro-Hamas propaganda and engaged in antisemitic harassment and intimidation of students. The Committee on Oversight and Accountability is the principal oversight committee of the US House of Representatives and has broad authority to investigate “any matter” at “any time” under House Rule X.
• The Committee on Ways and Means has been investigating several universities since November 15, 2023, when the Committee held a hearing entitled From Ivory Towers to Dark Corners: Investigating the Nexus Between Antisemitism, Tax-Exempt Universities, and Terror Financing. The Committee followed the hearing with letters to those institutions on January 10, 202
June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...
Immune lymphatic and endocrine system
1. Immune, Lymphatic and
Endocrine System
Learning intentions
•To secure knowledge by explaining the
function of each system
•To further develop knowledge by identifying
organs within each system
•To show excellence by explaining how
systems interrelate
2. The Immune system
Immune system
Spleen
White blood cells
•Lympocytes
•Monocytes
•monocytes
Adenoids Other Lymphoid tissue e.g in
the intestine
Lymphatic vessels
and lymph nodes
Thymus gland
Tonsils
3. Natural Body Defences
• Despite the fact
that our bodies are
often exposed to
harmful microbes,
we rarely become
ill.
• The body is good at
keeping microbes
out.
4. • The skin acts as a
barrier to keep microbes
out of our body.
• If our skin gets broken,
first of all the blood
forms a clot, Then a scab
forms.
• This keeps most
microbes out of the
body.
5. • Microbes can get into the
body in the air we breathe.
• The passages in the lungs
are lined with sticky
mucus. The microbes stick
to this.
• They are then removed
from the passages by the
action of the cilia (tiny
hairs that beat to remove
the mucus).
6. • If microbes
do get into
your body,
white blood
cells help to
protect us.
7. • They do this in three
ways:
1.Surrounding and
digesting microbes.
2.Producing antibodies,
chemicals which destroy
microbes.
3.Producing antitoxins,
chemicals which prevent
microbes poisoning your
body.
8. Natural Body Defences
• Despite the fact that our bodies are often exposed to
harmful microbes, we rarely become ill.
• The ____ acts as a barrier to keep microbes out of our body.
• If our skin gets broken, first of all the blood forms a clot,
Then a _____ forms.
• The passages in the lungs are lined with sticky _______. The
microbes we breathe in stick to this.
• They are then removed from the passages by the action of
the ______ (tiny hairs that beat to remove the mucus).
• If microbes do get into your body, ______ blood cells help to
protect us. They do this in three ways:
1. Surrounding and digesting __________.
2. Producing antibodies, chemicals which destroy microbes.
3. Producing antitoxins, chemicals which prevent microbes
poisoning your ______.
scab microbes white body cilia mucus skin
9. Natural Body Defences
• Despite the fact that our bodies are often exposed to
harmful microbes, we rarely become ill.
• The skin acts as a barrier to keep microbes out of our body.
• If our skin gets broken, first of all the blood forms a clot,
Then a scab forms.
• The passages in the lungs are lined with sticky mucus. The
microbes we breathe in stick to this.
• They are then removed from the passages by the action of
the cilia (tiny hairs that beat to remove the mucus).
• If microbes do get into your body, white blood cells help to
protect us. They do this in three ways:
1. Surrounding and digesting microbes.
2. Producing antibodies, chemicals which destroy microbes.
3. Producing antitoxins, chemicals which prevent microbes
poisoning your body.
10. The Immune System
Phagocytes– foot soldiersPhagocytes– foot soldiers
T-lymphocytes – search teamT-lymphocytes – search team
B-lymphocytes – elite attack squadB-lymphocytes – elite attack squad
11. Phagocytes
• Made in the bone
marrow
• 2 types: Neutrophils
and macrophages
• Patrol the body,
searching for invaders
• Engulf and digest
pathogens (and dead
human cells/debris)
Pathogens
Will form
phagocytic vesicle
Lysosomes move in
with enzymes to digest
pathogens
12. How do phagocytes detect
invaders?
Pathogen
Antigen Receptor
Phagocyte recognises a non-
human cell and begins to engulf it
Move towards pathogen
chemicals / toxins
Phagocyte
13. BUT – there are not enough
phagocytes to cope with the onslaught
of the flu virus
Antigen presentation
Thousands of new
viruses produced
every second
Macrophage
T-lymphocyte
Phagocytes have a key role because they alert other white
blood cells through antigen presentation.
15. Tissue fluid and lymph
This is another series of tubes
(like the blood vessels) that
transport fluid around your body.
16. • Tissue fluid is the liquid that
surrounds the cells, allowing
for transport between blood
and cells (e.g. Respiratory
gases) - DIFFUSION
• Capillary walls are partially
permeable
• Tissue fluid is the result of an
interplay of:
1. Hydrostatic pressure
2. Osmosis
17. • Lymph passes through the
lymphatic system and
drains back into the
circulatory system
• Lymph contains
lymphocytes (type of white
blood cell) which are
made in lymph nodes.
• Lymphocytes are part of
the immune system and
help to filter out foreign
material from the lymph
18. The fluid transported in the blood vessels
is called: blood.
The fluid in the lymphatic vessels is called: lymph.
The fluid in between these two types of vessels (so
In between the cells) is called tissue fluid.
What is the connection between these 3
fluids?
19. Blood flows from an artery into the capillaries.
Imagine capillaries having small holes in them.
The blood pressure (caused by the pumping of the
heart muscle) pushes part of the blood from the
capillaries into the tissue that surrounds the
capillaries.
Components of the blood that can leave the
capillaries are: white blood cells and plasma.
Remember that plasma was fluid with (small)
nutrients, waste products and all other kinds of
stuff in it.
Components that cannot leave the capillaries are
large nutrients, red blood cells and platelets.
20. The fluid that is pushed out is now present in
the tissue between the cells. It is now called
tissue fluid!
The cells take from the tissue fluid what they
need and they give waste products back.
21. The tissue fluid can’t stay in between the
cells. More and more fluid is pushed out of
the capillaries by the blood pressure.
If all that fluid stays in between the cells, you
would explode!
And, on top of that, the amount of blood
within your blood vessels would decrease
dramatically.
22. Some of the tissue fluid will be pushed back
into the capillaries. But because the pressure
inside the capillaries is higher than the pressure
inside the tissue, not all fluid will flow back.
To get rid of the remaining fluid would be a waste.
Luckily your body found a solution!
23. The tissue fluid that cannot flow back into the
capillaries is collected in the lymphatic vessels.
The fluid is now called lymph.
24. The lymph will flow through lymphatic
vessels away from the organs. To keep the
flow going in the right direction lymphatic
ducts contain valves!
25. Some vessels will join up to form larger vessels.
Eventually the vessels unite into two main ducts;
the right lymphatic duct and the thoracic duct.
Both these ducts empty their contents into the
subclavian veins (sleutelbeen aderen) and then
into the superior vena cava.
Thus, the volume of fluid that couldn’t be brought
back to the blood in the organ itself, is brought
back to the blood in these specific places.
26.
27. Let’s draw a comparison between the three
types of fluid.
1) Copy the table. Add a + when a component is
present, add a – when it is not present.
component blood tissue fluid lymph
water
proteins
vitamins
red blood cells
white blood cells
amino acids
platelets
oxygen
carbondioxide
antibodies
29. Blood is pumped from the left ventricle
towards your organs. In your organs, part of
the blood is removed from the blood vessels
due to the blood pressure. Thus, the volume
of blood decreases.
2) Does the right ventricle contain less,
the same or more blood than your left
ventricle? Explain your answer!
30. Answer
They contain the same volume of blood. Some
blood volume is lost in the organs (forms tissue
and lymph), but this volume is returned by the
lymphatic vessels via the subclavian veins and
vena cava (before it enters the heart!)
31. 3) Does the pulmonary circulation
produce more, less or the same amount of
tissue fluid? Explain your answer!
32. Answer
The pulmonary circulation produces less tissue
fluid. This because there is a lower blood pressure
in the pulmonary circulation compared to the
systemic circulation. (less distance to cross).
If there would be lots of tissue fluid in your lungs,
you would not be able to take up oxygen and will
drown in your own fluids.
33. Lymphatic vessels may pass lymph nodes on
their way to the superior vena cava. These
lymph nodes are important white blood cell
factories.
When you are infected with for
instance bacteria, white blood cells attack the
invaders.
Since the lymph nodes contain many
white blood cells, an enormous war against the
invaders will take place here.
34. This war can result in swollen lymph nodes.
When you have a common cold, you can
sometimes feel the swollen lymph nodes in
your neck, just below your jaw. These are your
tonsils.
35. The Endocrine System
• What Is the Endocrine System?
• Although we rarely think about the
endocrine system, it influences almost
every cell, organ, and function of our
bodies. The endocrine system plays a role
in regulating mood, growth and
development, tissue function, metabolism,
and sexual function and reproductive
processes.• http://kidshealth.org/teen/your_bo
36. • the endocrine system is in charge of body
processes that happen slowly, such as cell
growth. Faster processes like breathing
and body movement are controlled by the
nervous system. But even though the
nervous system and endocrine system are
separate systems, they often work
together to help the body function
properly.
37. • The foundations of the endocrine system
are the hormones and glands. As the
body's chemical messengers, hormones
transfer information and instructions from
one set of cells to another. Many different
hormones move through the bloodstream,
but each type of hormone is designed to
affect only certain cells.
38. • A gland is a group of cells that produces and
secretes, or gives off, chemicals. A gland selects and
removes materials from the blood, processes them,
and secretes the finished chemical product for use
somewhere in the body.
• Some types of glands release their secretions in
specific areas. For instance, exocrine (pronounced:
EK-suh-krin) glands, such as the sweat and salivary
glands, release secretions in the skin or inside the
mouth. Endocrine glands, on the other hand,
release more than 20 major hormones directly into
the bloodstream where they can be transported to
cells in other parts of the body.
39. • The major glands that make up the human endocrine system
include the:
• hypothalamus
• pituitary gland
• thyroid
• parathyroids
• adrenal glands
• pineal body
• reproductive glands (which include the ovaries and testes)
• Pancreas explain the role of each of the above in your booklet