The document discusses the four major types of tissues in the human body: epithelial, connective, muscle and nervous tissue. It provides details on the characteristics and functions of different categories within each tissue type, such as the different forms of epithelial tissue like stratified squamous epithelium that lines the skin. Connective tissues discussed include bone, cartilage and blood. The three main types of muscle tissue - skeletal, smooth and cardiac - are also outlined.
B.Pharm-Ist sem-HAP-Chapter 3-tissue level of organization.pptxSheetal Patil
Introduction
The term tissue is used to describe a group of cells found together in the body.
Types of tissues
1. Epithelial tissue:]
2. Connective tissue: ]
3. Muscular tissue: ]
4. Nervous tissue: ]
-Development of Tissues
Tissues of the body develop from three primary germ layers: Ectoderm, Endoderm and Mesoderm.
1. Epithelial cell
Epithelial tissue consists of cells arranged in continuous sheets, in either single or multiple layers.
Closely packed and held tightly together.
-General Features of Epithelial Cells:
1. Apical (free) surface
2. Lateral surfaces
3. Basal surface
Basement membrane
Basal lamina
Reticular lamina
-Classification of epithelial tissues
Epithelial tissues are classified according to :
Number of the cell layers formed
1. Simple epithelium (one layer)
2. Stratified epithelium(several layer)
-The shape of the cells
1. Squamous (flat cell)
2. Cuboidal (cube like)
3. Columnar (rectangular)
4. Transitional (variable)
- Glandular Epithelium and Glands
There are main two types of glands
1. Endocrine Glands
2. Exocrine Glands
-Structural Classification of Exocrine Glands
1. Simple gland
2. Compound gland
-Functional Classification of 1. Exocrine Glands
2. Merocrine glands
3. Aprocrine glands
4. Holocrine glands
2. Connective Tissue
-Functions of connective tissues
-Classification of Connective Tissues
Embryonic connective tissue
Mesenchyme
Mucous connective tissue
Mature connective tissue
Loose connective tissue
Areolar connective tissue
Adipose tissue
Reticular connective tissue
Dense connective tissue
Dense regular connective tissue
Dense irregular connective tissue
Elastic connective tissue
Cartilage
Hyaline cartilage
Fibrocartilage
Elastic cartilage
Bone tissue
-Blood and Lymph
--Characteristics of Connective Tissue
1. Extra cellular matrix
2. Fibers
3. Cells of various types
Extracellular matrix of Connective Tissue
-Connective Tissue Cells
1. Fibroblasts
2. Adipocytes (fat cells)
3. Mast cells
4. White blood cells
5. Macrophages
6. Plasma cells
-Connective Tissue Extracellular Matrix;
Ground substance and fibres make up the ECM.
a. Ground substance
-Complex combination of proteins and polysaccharides (hyaluronic acid, chondroitin sulphate dermatan sulphate and keratan sulphate).
b. Fibres
-Collagen fibers
-Elastic fibers
-Reticular fibers
3. Muscular Tissue
-Skeletal muscle tissue (Attached to bone by tendons)
-Cardiac muscle tissue (Heart wall)
-Smooth muscle tissue (Iris of eyes, walls of hollow internal structures such as blood vessels, airways of lungs, stomach, intestine, gall bladder, urinary bladder and uterus)
--Consists of elongated cells called muscle fibers or myocytes for contraction.
--Cells use ATP to generate force.
4. Nervous Tissue
-Neurons or nerve cells
-Neuroglia
--Exhibit sensitivity to various types of stimuli, converts them into nerve impulses (action potentials) and conducts nerve impulses to other neurons.
B.Pharm-Ist sem-HAP-Chapter 3-tissue level of organization.pptxSheetal Patil
Introduction
The term tissue is used to describe a group of cells found together in the body.
Types of tissues
1. Epithelial tissue:]
2. Connective tissue: ]
3. Muscular tissue: ]
4. Nervous tissue: ]
-Development of Tissues
Tissues of the body develop from three primary germ layers: Ectoderm, Endoderm and Mesoderm.
1. Epithelial cell
Epithelial tissue consists of cells arranged in continuous sheets, in either single or multiple layers.
Closely packed and held tightly together.
-General Features of Epithelial Cells:
1. Apical (free) surface
2. Lateral surfaces
3. Basal surface
Basement membrane
Basal lamina
Reticular lamina
-Classification of epithelial tissues
Epithelial tissues are classified according to :
Number of the cell layers formed
1. Simple epithelium (one layer)
2. Stratified epithelium(several layer)
-The shape of the cells
1. Squamous (flat cell)
2. Cuboidal (cube like)
3. Columnar (rectangular)
4. Transitional (variable)
- Glandular Epithelium and Glands
There are main two types of glands
1. Endocrine Glands
2. Exocrine Glands
-Structural Classification of Exocrine Glands
1. Simple gland
2. Compound gland
-Functional Classification of 1. Exocrine Glands
2. Merocrine glands
3. Aprocrine glands
4. Holocrine glands
2. Connective Tissue
-Functions of connective tissues
-Classification of Connective Tissues
Embryonic connective tissue
Mesenchyme
Mucous connective tissue
Mature connective tissue
Loose connective tissue
Areolar connective tissue
Adipose tissue
Reticular connective tissue
Dense connective tissue
Dense regular connective tissue
Dense irregular connective tissue
Elastic connective tissue
Cartilage
Hyaline cartilage
Fibrocartilage
Elastic cartilage
Bone tissue
-Blood and Lymph
--Characteristics of Connective Tissue
1. Extra cellular matrix
2. Fibers
3. Cells of various types
Extracellular matrix of Connective Tissue
-Connective Tissue Cells
1. Fibroblasts
2. Adipocytes (fat cells)
3. Mast cells
4. White blood cells
5. Macrophages
6. Plasma cells
-Connective Tissue Extracellular Matrix;
Ground substance and fibres make up the ECM.
a. Ground substance
-Complex combination of proteins and polysaccharides (hyaluronic acid, chondroitin sulphate dermatan sulphate and keratan sulphate).
b. Fibres
-Collagen fibers
-Elastic fibers
-Reticular fibers
3. Muscular Tissue
-Skeletal muscle tissue (Attached to bone by tendons)
-Cardiac muscle tissue (Heart wall)
-Smooth muscle tissue (Iris of eyes, walls of hollow internal structures such as blood vessels, airways of lungs, stomach, intestine, gall bladder, urinary bladder and uterus)
--Consists of elongated cells called muscle fibers or myocytes for contraction.
--Cells use ATP to generate force.
4. Nervous Tissue
-Neurons or nerve cells
-Neuroglia
--Exhibit sensitivity to various types of stimuli, converts them into nerve impulses (action potentials) and conducts nerve impulses to other neurons.
In biology, tissue is a cellular organizational level between cells and a complete organ. A tissue is an ensemble of similar cells and their extracellular matrix from the same origin that together carry out a specific function. Broadly tissues can be classified into two major groups : Plant tissue and Animal tissue.
In animals, organs are made up of four basic types of tissues - epithelial tissue, connective tissue, muscle tissue and nerve tissue. These tissues have distinctive features and specific functions which combine to form functioning organs.
In this lesson you will learn about different types of animal tissues :
1) Epithelial Tissue
2) Connective Tissue
3) Muscular tissue
4) Neural Tissue
I hope this document is helpful to you. Please share the document with your friends if you think this will benefit them. Get ready for the next lesson. Thanks.
It talks about what is tissue, animal tissue, types of animal tissue, classification based on structure & function then epithelial tissue - simple and compound - 5 classification epithelial tissue
In biology, tissue is a cellular organizational level between cells and a complete organ. A tissue is an ensemble of similar cells and their extracellular matrix from the same origin that together carry out a specific function. Broadly tissues can be classified into two major groups : Plant tissue and Animal tissue.
In animals, organs are made up of four basic types of tissues - epithelial tissue, connective tissue, muscle tissue and nerve tissue. These tissues have distinctive features and specific functions which combine to form functioning organs.
In this lesson you will learn about different types of animal tissues :
1) Epithelial Tissue
2) Connective Tissue
3) Muscular tissue
4) Neural Tissue
I hope this document is helpful to you. Please share the document with your friends if you think this will benefit them. Get ready for the next lesson. Thanks.
It talks about what is tissue, animal tissue, types of animal tissue, classification based on structure & function then epithelial tissue - simple and compound - 5 classification epithelial tissue
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.
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.
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.
Biological screening of herbal drugs: Introduction and Need for
Phyto-Pharmacological Screening, New Strategies for evaluating
Natural Products, In vitro evaluation techniques for Antioxidants, Antimicrobial and Anticancer drugs. In vivo evaluation techniques
for Anti-inflammatory, Antiulcer, Anticancer, Wound healing, Antidiabetic, Hepatoprotective, Cardio protective, Diuretics and
Antifertility, Toxicity studies as per OECD guidelines
Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
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
"Protectable subject matters, Protection in biotechnology, Protection of othe...
chapter-5-powerpoint-le.ppt
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*See PowerPoint image slides for all figures and tables
pre-inserted into PowerPoint without notes”.
Chapter 5
Lecture Outlines*
Hole’s Essentials of Human
Anatomy & Physiology
David Shier
Jackie Butler
Ricki Lewis
Created by Lu Anne Clark
Professor of Science, Lansing Community College
3. 5 - 3
Introduction:
A. Cells are arranged in tissues that provide
specific functions for the body.
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4. 5 - 4
B. Cells of different tissues are structured
differently, which leads to their
differences in function.
C. The tissues of the human body include
four major types.
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D. These four tissue types have a
wide range of functions, as shown
in the following table.
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Epithelial Tissues:
A. General Characteristics
1. Epithelial tissue is widespread
throughout the body, covers
organs, and lines body
surfaces.
2. Epithelial tissues are anchored
to a basement membrane, are
made up of tightly packed
cells containing little
intercellular material,
generally lack blood vessels,
and are replaced frequently.
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B. Simple Squamous Epithelium
1. Simple squamous epithelium is
made up of a single layer of
thin, flattened cells.
2. Because it is suited for
diffusion, it functions in the
exchange of gases in the
lungs and lines blood and
lymph vessels as well as body
cavities.
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C. Simple Cuboidal Epithelium
1. Simple cuboidal epithelium
consists of a single layer of
cube-shaped cells with
centrally located nuclei.
2. It functions in secretion and
absorption in the kidneys, and
in secretion in glands.
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D. Simple Columnar Epithelium
1. Simple columnar epithelium is
made up of a row of
elongated cells whose nuclei
are all located near the
basement membrane. It may
be ciliated.
2. It lines the uterus, stomach,
and intestines where it
protects underlying tissues,
secretes digestive fluids, and
absorbs nutrients.
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3. In the intestine, these cells
possess microvilli that increase the
surface area available for absorption.
4. Mucus-secreting goblet cells
can be found among columnar
cells.
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E. Pseudostratified Columnar Epithelium
1. These cells appear layered due to the
varying positions of their nuclei within
the row of cells, but are not truly
layered.
2. Cilia may be present, along with
mucus-secreting globlet cells, that
line and sweep debris from
respiratory tubes.
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F. Stratified Squamous Epithelium
1. This type of tissue is made up
of layers of flattened cells that
are designed to protect
underlying layers.
2. It makes up the outer layer of
skin, and lines the mouth,
throat, vagina, and anal canal.
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3. In the skin, outer layers of cells
undergo keratinization; however,
this process does not occur where
tissues remain moist in the throat,
vagina, or anal canal.
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G. Stratified Cuboidal Epithelium
1. This tissue consists of two to
three layers of cuboidal cells
lining a lumen of the mammary
glands, sweat glands, salivary
glands, and pancreas.
2. Several layers of cells provide
greater protection than one
single layer.
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H. Stratified Columnar Epithelium
1. This tissue consists of several layers
of cells and is found in the vas
deferens, part of the male urethra,
and parts of the pharynx.
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I. Transitional Epithelium
1. Transitional epithelium is
designed to distend and return
to its normal size, as it does in
the lining of the urinary
bladder.
2. This design provides
distensibility and keeps urine
from diffusing back into the
internal cavity.
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J. Glandular Epithelium
1. This tissue is made up of cells
designed to produce and
secrete substances into ducts
or into body fluids.
2. Glands that secrete products
into ducts are exocrine; those
that secrete into body fluids
and blood are called
endocrine.
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3. Glands are classified by the ways
they secrete their products.
a. Merocrine glands release fluid
products by exocytosis
(pancreas) and are grouped
as serous which produce a
watery fluid or mucus which
produce a thicker, protective
substance.
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b. Apocrine glands lose portions
of their cell bodies during
secretion (mammary glands).
c. Holocrine glands release entire
cells (sebaceous glands).
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Connective Tissues:
A. General Characteristics
1. Connective tissues bind, support,
protect, serve as frameworks, fill
spaces, store fat, produce blood
cells, protect against infection,
and repair tissue damage.
2. Unlike epithelial tissues,
connective tissues have
abundant matrix, or intercellular
material, throughout, and have
good blood supplies (except
cartilage).
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B. Major Cell Types
1. The fibroblast is the most
common cell type, and is a
fixed, star-shaped cell that
secretes fibers and is large in
size.
2. Wandering macrophages
function as scavenger cells
and defend against infection.
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3. Mast cells are large and are located
near blood vessels where they
release heparin (anticoagulant) and
histamine (promotes inflammation).
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C. Connective Tissue Fibers
1. Strong collagenous fibers
(white fibers), made of the
protein collagen, add strength
for holding body parts
together.
2. Elastic fibers (yellow fibers),
made of the protein elastin,
are stretchy and add flexibility
to certain types of connective
tissues.
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3. Reticular fibers are thin collagenous
fibers that form supportive networks
in a variety of tissues.
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D. Loose Connective (areolar) Tissue
1. This type of tissue forms
delicate, thin membranes
throughout the body that bind
body parts together such as
skin and underlying organs.
2. The majority of the cells are
fibroblasts that are separated
by a gel-like ground substance
that contains collagenous and
elastic fibers.
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E. Adipose Tissue
1. Adipose tissue is loose
connective tissue designed to
store fat.
2. It is found beneath the skin,
around joints, padding the
kidneys and other internal
organs, and in certain
abdominal membranes.
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F. Dense Connective Tissue
1. This tissue consists of densely
packed collagenous fibers and
is very strong but lacks a good
blood supply.
2. It is found as part of tendons
and ligaments.
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G. Cartilage
1. Cartilage is a rigid connective
tissue that provides a
supportive framework for
various structures. It lacks a
vascular system and so heals
slowly.
2. Cartilage cells (chondrocytes)
lie within lacunae in the gel-
like fluid matrix.
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3. Cartilaginous structures are
enclosed within a connective tissue
perichondrium.
4. The most common, hyaline
cartilage, is white with abundant
fine collagen fibers, is found at the
ends of bones, and supports
respiratory passages.
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5. Elastic cartilage, with elastic fibers,
provides a framework for the
external ears and parts of the
larynx.
6. Fibrocartilage, with many
collagenous fibers, is a tough tissue
that provides a shock-absorbing
function in intervertebral disks and
in the knees and pelvic girdle.
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H. Bone
1. Bone is the most rigid
connective tissue, with
deposits of mineral salts and
collagen within the matrix.
2. Bone internally supports the
body, protects, forms muscle
attachments, and is the site
for blood cell formation.
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3. Bone cells, called osteocytes, lie
within lacunae and are arranged in
concentric circles (osteons) around
osteonic canals interconnected by
canaliculi.
4. Bone has a good blood supply,
enabling rapid recovery after an
injury.
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I. Blood
1. Blood is composed of cells (red and
white) suspended in a liquid matrix
called plasma.
2. It functions to transport substances
throughout the body.
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Muscle Tissues:
A. General Characteristics
1. Muscle cells, or fibers, can contract
and consist of three major types.
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B. Skeletal Muscle Tissue
1. Skeletal muscle is attached to
bone and can be controlled by
conscious effort (voluntary).
2. The cells (muscle fibers) are
long and cylindrical, striated,
have many nuclei, and
contract from nervous
impulse.
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C. Smooth Muscle Tissue
1. Smooth muscle tissue lacks
striations, is uni-nucleate, and
consists of spindle-shaped
cells.
2. This involuntary muscle is
found in the walls of internal
organs, and in the digestive
tract, blood vessels, and
urinary bladder.
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D. Cardiac Muscle Tissue
1. Cardiac muscle tissue is found
only in the heart and consists
of branching fibers that are
connected to each other with
intercalated disks.
2. This involuntary muscle has a
single nucleus in each cell but
appears striated.
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Nervous Tissues:
A. Nervous tissues are found in the
brain, spinal cord, and nerves.
B. Neurons, or nerve cells, conduct
nervous impulses while helper cells,
or neuroglia, support and nourish
the neurons.
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Epithelial Membranes
Composed of a layer of epithelial tissue and a
layer of connective tissue
Cover body surfaces and line body cavities
Four main types: serous, mucous, synovial,
and cutaneous
Considered to be organs because these
membranes are composed of more than one
type of tissue
53. 5 - 53
Types of Membranes
A. Serous membranes line body cavities that
lack openings to the outside.
1. They line the thorax and abdomen
and cover the organs within these
cavities.
2. Serous membranes are made up of
epithelium and loose connective
tissue and secrete serous fluid that
acts as a lubricant.
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B. Mucous membranes line the cavities and
openings that lead to the outside of the
body, including the oral and nasal
cavities, and openings of the digestive,
reproductive, respiratory, and urinary
systems.
1. They consist of epithelium and
connective tissue with specialized
cells that secrete mucus.
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C. Synovial membranes line the joint
cavities.
1. These membranes consist of only
connective tissues, and they secrete
lubricating synovial fluid.
D. The cutaneous membrane consists of the
skin (also called the integument).
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