This is pdf knowledge for cell and different type of tissue in body function

1. TISSUE : -
Tukesh nursing 33

2. Definition : -
■ Body organs are made of many tissues . Tissues are
collection of cells performing the same function and
having similar structures.
Or
■ the tissue of the body consists of large numbers of cell
and they are classified according to the size shape and
function of these cells.

3. Types of tissues : -
■ Epithelial tissue or epithelium
■ Connective tissue
■ Muscle tissue
■ Nervous tissue

4. 1. Epithelial Tissue or epithelium
■ Epithelial tissue or epithelium consist of a single layer
or multiple layers of cells which are closely packed
without any intracellular space.
■ The cell usi lie on a basement membrane which is an
inert connective tissue.
■ Epithelial tissue does not have blood supply of its own
and depend upon the the diffusion from underlying
their nutrition

5. Location. : - epithelial lines or cover external and
internal surface of the human body organ
■ Outer surface of the body . Skin
■ The mucosa of the luminal surface of the cavities. Within the body
as gastrointestinal tract , urinary tract , blood vessels , heart
chambers
function : - protection against injury bacteria and chemical agents
- secretion the lining the glandular tissue secrets different juices and
enzymes
excretion – epithelium performs excretory function in kidney and skin
Lubrication - the serous cavity help in lubrication in plural cavity.
Sensory function – as taste buds and organ neuroepithelium

6. Classification : -
I .Simple epithelium
1. Simple squamous epithelium
2. Simple cubiodal epithelial
3. Simple columnar epithelium
4. Pseudo stratified columnar epithelial
II. Compound or stratified epithelium
1. stratified squamous epithelium
2. Stratified columnar epithelium
3. Stratified columnar ciliated epithelium
4. Transitional epithelium

7. I. Simple epithelium : - simple epithelium refers to a
cellular sheet formed of single layer of cells.
■ Simple squamous epithelium : - simple squamous epithelium is
composed of single layer of flat cells resting on the basement
membrane with flattened the cell are closely packed
■ Cuboidal epithelium : - simple cuboidal epithelium is composed of a
single layer of cuboidal cells on the basement membrane.
■ Columnar epithelium : columnar epithelium is composed of a single
layer of tall columnar cells resting on basement membrane . Nucleus
of columnar cell placed central towards base.
■ Columnar ciliated epithelium : - the columnar epithelium ciliated
epithelium is composed of simple columnar large number of cilia
nucleus in these cells

8. II. Compound or stratified epithelium : -
compound or stratified epithelium refers to the cellular sheet formed
of several layer of. Cell of various shape
1. Stratified squamous epithelium : - stratified squamous epithelium
consist of multiple layers of cells of different shapes arranged as below
. Basal cell or the deepest cell are columnar
2. Stratified columnar epithelium : - it is formed of multiple layers less in
number than stratified squamous epithelium superficial cell are
columnar in type
3. Transitional epithelium : - transitional epithelial is composed of several
layers of cells arranged classically in three strata. Superficial layers is
formed by large polyhedral umbrella like cells

9. 2. Connective tissue : -
■ Connective tissue proper is in fact in the connective tissue in real sense
which serves following function
■ Connect the various tissue and organ of the body with each other.
■ Support the tissue and organs of the body by providing a framework
■ Protecte the tissues and organs by withstanding internal as swell as
external machanical stresses
■ Types of connective tissue
1. loose connective tissue
2. Dense connective tissue
3. Reticular. Connective tissue
4. Adipose connective tissue
5. Pigment connective tissue

10. 1. Loose connective tissue : - of loose connective tissue include
- matrix is semisolid and contain loose irregularly arranged
collagen and elastic fibre in the amorphous ground substance
2. Dense fibrous connective tissue : -
■ it is formed mainly by closely packed bundle of collagen tissue with
very little ground substance . The cells are few in rows between the
bundle of fibres
3. Reticular connective tissue : - it is made up mainly of stellate shaped
reticular cells and fibrillation network of reticular fiber
4. Adipose connective tissue : - adipose connective tissue is two types
white and brown

11. 3. Muscle tissue
■ Muscle tissue is composed of cells that have the special ability toshorten or contract in order to
produce movement of the body parts
■ Muscular tissue is a type skeletal muscle , smooth muscles, cardiac muscle

12. 4. Nervous tissue
■ Nervous tissue is a consist of nerve tissue. Neurons is specialise cells
that react stimuli by generating single
■ nervous tissue is control of the function ka activity