Question

What are the various types of animal tissues? Mention briefly the location and one main function of each class of tissue.

Answer 1

Types of animal tissue:
1. Epithelial tissues

Squamous epithelial tissue:

• Location: It is present in lines of blood vessels and lymph vessels.
• Also present in alveoli of lungs and nephrons of kidney and internal ear.
• Function: It provides protection to the underlying parts against abrasion and entry of germs.
• Also helps in excretion and gas exchange.

Columnar epithelial tissue:

• Location: Present in the lining of stomach intestine gallbladder and bile duct.
• Function: It helps in protection, absorption, and secretion.

Cuboidal epithelial tissue:

• Location: It is present in the salivary duct, pancreatic duct, nephron of kidney, thyroid gland and ovaries.
• Function: It helps in protection, secretion, absorption, excretion and gamete formation.

Ciliated epithelial tissue:

• Location: It is found in the lining of the windpipe, kidney tubules and oviduct.
• Function: It helps in the movement of mucus, urine, eggs, sperms and cerebrospinal fluid in a particular direction.

2. Muscular tissue

Striated voluntary muscle:

• Location : These tissues are found in arms, legs, neck etc.
• Function : These tissues help in the moment of the body.

Unstriated involuntary muscles:

• Location : These muscles are found in the stomach, intestine, blood vessels, breathing passages and urogenital ducts.
• Function : Function of these muscles is rhythmic contraction and relaxation.

Cardiac muscles:

• Location : These muscles are present only in the heart.
• Functions : Rhythmic contraction and relaxation is the function of these muscles.

3. Nervous tissue

• Location : It is present in the brain, spinal cord and nerves.
• Function : The main function of nervous tissue is to carry the message in the form of nerve impulses.

Connective tissue connective:

Connective tissue proper:

• Location : These tissues are found widely distributed all over the body in between other tissues.
• Function : Its main function is connectivity.
• It connects the skin with the muscles, fills the spaces inside the organs, attaches the blood vessel and nerves with surrounding tissue.

Supportive connective tissue:

• It consists of two tissues: cartilage and bone.

Cartilage:

• • Location: It is found in the nose tip, ear pinna, rings of the windpipe, end of long bones, etc.
• Function: Its main function is providing support and flexibility.

Bone:

• Location: These tissues are found in the bones.
• Function: It provides support to the body for movement.

Fluid connective tissue:

• It consists of two tissues: blood and lymph.

Blood:

• Location: Blood is present all inside the body in blood vessels.
• Function: Its main function is the transportation of oxygen, waste materials, nutrients, food materials etc.

Lymph:

• Location: It is found in the surrounding body cells.
• Function: It transport food materials, hormones, oxygen etc.