Powerpoint presentation Ajeesh Kumar.N

SABARIGIRI COLLEGE OF EDUCATIONANCHAL

Presented by

Ajeesh Kumar.N.

Natural Science

Reg. No. 13379001

ANIMAL TISSUES

The human body is composed of billions of cells to

perform various functions. In multicellular animals, a

group of similar cells along with intracellular sub an

organisation called tissues. Tissues are different and are

broudly classified in to four types

1. Epithelial tissue

2. connective tissue

3. Muscular tissue

4. Neural Tissue.

EPITHELIAL TISSUE

we commonly ruler to an

epithelial tissue epitheliam.

This tissue has a free surgace,

which faces either a body fluid

or the outside environment.

and thus provides a covering

or a lining for some part of the

body. They are two types.

SIMPLE EPITHELIUM

Simple epithelium is composed

of a single layer of cells and

function as a living for body

cavities, ducts and tubes.

Simple epithelium is divided into

3 types:- Squamom epithelium,

Cuboidal epithelium, Columnar

epithelium

COMPOUND EPITHELIUM

It is made up of more than one layer of cells

and thus has a limited role in secretion and

absorption. their main function is to provide

protection against chemical and mechanical

stresses.

CONNECTIVE TISSUE

They are named connective

tissues, because of their

special function of linking and

supporting other tissues or

organs of the body.

Connective tissues are classified in to three types.

they are:

1. Loose connective tissue

2. Dense connective tissue

3. Specialised connective tissue

LOOSE CONNECTIVE TISSUE

It has cells and fibers loosely

arranged in a semi-fluid ground

substances.

Eg: Areolar tissue

DENSE CONNECTIVE TISSUE

Fibers and fibroblasts are compactly

packed in this sense connective tissue.

Orientation of fibers show a regular or

irregular pattern and are called dense

regular and are called dense regular and

dense irregular tissues.

SPECILISED CONNECTIVE TISSUE

This tissue is present in

the skin, cartilage, bones

and blood

Bones: Have a hard and non- pliable grand substance

rich in calcium salts and collagen fibers which

give bone its strength.

Cartilage: is solid and pliable and resist compression.

Blood: is fluid connective tissue containing plasma, red

blood cells (RBC), white blood cells (WBC) and

platelets.

MUSCLE TISSUE

It is made up of many long cylindrical

fibers arranged in parallel arrays.

Muscles are of three types, they are

Skeletal Muscle, Smooth Muscle,

Cardiac muscle.

Skeletal Muscle: tissue is closely attached to

skeletal bones

Smooth Muscle: Fiber taper at both ends and do not

show striations.

Cardiac Muscle tissue: is a contractile tissue

present only in the heart.

NEURAL TISSUE

Neural tissue exerts the greatest

control over the body’s

responsiveness to changing

conditions. Neurons, the unit of

neural system are excitable cells.