ANIMAL TISSUES, INTRODUCTION

*group of cells having similar origin and function but their structure may or may not be similar , is commonly called TISSUE.
*study of tissue is called Histology.
*father and founder of Histology - Marcello Malpighi
*Matrix- it is secretory product of cell in tissue. The quantity of matrix and chemical composition varies in different cell.
*first of all tissue appeared in animals of phylum coelentrata.

*on the basis of function tissues are classified into four types-

1. Epithelial tissue- FUNCTION- absorption, secretion, protection etc.
2. Connective tissue- FUNCTION- connection, binding, joining, attachment etc.
3. Muscular tissue- FUNCTION- contraction and relaxation, movement and locomotion.
4. Nervous tissue- FUNCTION- to receive stimulus and transport the transport the stimuli from one place to another.