Animal tissues are divided into four main types - epithelial tissue, connective tissue, muscle tissue, and nervous tissue. Epithelial tissue covers the internal and external surfaces of the body and its main functions include secretion, absorption, protection, and filtration. It is made up of cells that are arranged in one or more layers. Connective tissues are found throughout the body and function to bind, support, and connect other tissues. They contain fibers and ground substances along with loosely arranged cells. The major liquid connective tissue in the body is blood, which contains plasma and three main types of corpuscles - red blood cells, white blood cells, and platelets.

1. ANIMAL TISSUES

2. TYPES OF ANIMAL TISSUE

3. EPITHELIAL TISSUE
TYPE STRUCTURE LOCATION FUNCTION
CUBOIDAL CUBE LIKE CELLS •LINING OF KIDNEY •SECTRETION
EPITHELIUM WITH NUCLEUS AT • TUBULES • EXCRETION &
THE CENTRE •SALIVARY,SWEAT & ABSORPTION
PANCREATIC DUCTS.
COLUMNAR TALL,PILLAR OR •LINING OF THE •SECTRETION
EPITHELIUM COLUMN LIKE CELLS STOMACH • EXCRETION &
WITH NUCLEUS •LINING OF THE ABSORPTION
TOWARDS THE INTESTINE & GALL • MUCOUS IS
BASEMENT BLADDER SECRETED.
MEMBRANE
CILIATED CERTAIN CUBOIDAL & OVIDUCTS, TRACHEA, MOVEMENT OF CILIA
EPITHELIUM COLUMNAR HAVE BRONCHIOLES & IN BRINGS ABOUT
CILIA AT THEIR FREE NEPHRONES OF MOVEMENT OF
END. KIDNEY SUBSTANCES IN ONE
DIRECTION
GLANDULAR CUBOIDAL & SALIVARY, GASTRIC, SECRETE ENZYMES,
EPITHELIUM COLUMNAR INTESTINAL , SWEAT MUCOUS OR
EPITHELIUM ARE GLANDS, ADRENAL HOMONES.
MODIFIED INTO AND THYROID
GLANDS GLANDS.

4. STRATIFIED EPITHELIUM
• MORE THAN ONE LAYER OF CELLS IS PRESENT.
TYPE STRUCTURE LOCATION FUNCTION
SQUAMOUS THIN FLATTENED •FORM LINING OF * DIFFUSION OF
EPITHELIUM CELLS, WITH A MOUTH, MATERIALS OR
CENTRALLY PLACED OESOPHAGUS AND EXCHANGE OF
NUCLEUS, LUNGS. GASSES.
COMPACTLY •INNER LINING OF * PROTECTION
ARRANGED. BLOOD VESSELS FROM CHEMICALS,
•IN FORM OF MECHANICAL
STRATIFIED INJURY, ENTRY OF
EPITHELIUM IT GERMS & DRYING.
COVERS THE SKIN
SURFACE

8. CONNETIVE TISSUES
• They have the basic characteristics as :
• Cells, which are loosely packed, fibres which
are scattered in between the cells and matrix
which is the ground tissue.
• It may be jelly like fluid, dense and/ or rigid.
• They are located widely throughout the body,
present between different tissues and organs.
• They mainly function in binding , packaging &
other functions as storing fats, transporting
substances etc.

9. Liquid connective tissue
• Our body contains two liquid connective
tissues:
1) blood
2) lymph
Blood is the major liquid connective tissue. It’s
constituents are divided into two types
Liquid : plasma
Solid : corpuscles [ cells]

10. plasma
• It is a straw coloured liquid and constitutes
55% of the blood.
• 90 – 92% of plasma is water while 6-8% is
proteins such as fibrinogen etc.
• Plasma without coagulation proteins is known
as serum.
• It contains mineral ions and other organic
compounds like glucose, amino acids, lipids,
hormones, vitamins etc.

11. CORPUSCLES /CELLS
RBC WBC PLATELETS
1. They are biconcave & 1. They are round or 1. Smallest and irregularly
appear disc like concave irregular in shape shaped.
structures.
2. Do not have nucleus. 2. Have a prominent 2. Colourless
nucleus which can be
lobed. They can have
granulated or agranulated
cytoplasm.
3. They are red due to 3. It is colourless . 3.
presence of respiratory
pigment - Haemoglobin.
4. Transports oxygen & 4. Acts to protect against
carbon dioxide. the diseases.
5. Formed in the bone 5. There are 5 types of
marrow from the stem WBC NEUTROPHILS,