Tissue
- A group of cells that are similar in structure and perform the same function.
– The Study of tissues is known as histology.
– Animal tissues are classified into four kinds.
Epithelial, Connective Muscular and Nervous Tissue.
Epithelial Tissue: Epi means outer, and thelium means tissue. It covers the animal body from inside and outside.
Epithelial tissue is of three types.- Squamous Epithelial tissue.- Cuboidal Epithelial tissue.- Columnar Epithelial tissue.
Connective Tissue:
Tissue that connects different parts of the body. It is of different types. They are Areolar, adipose, bone, tendon, ligament, cartilage and blood.
Muscular Tissue: The tissue that helps in movement is known as muscular tissue. It is of three types. They are striated, non-striated and cardiac muscles.
Functions: These help in the movement of food in the digestive tract and the movement of blood in blood vessels.
Nervous Tissue:
The tissue that transmits the information is the nervous tissue. It includes the brain, spinal cord and nerves.
Function: Nervous tissue receives the information from sense organs and passes it to the brain and spinal cord.