Answer:
The four tissue present in the body are epithelial tissue, connective tissue, muscle tissue and nervous tissue.
Step-by-step explanation:
Epithelial tissue:
Epithelial tissue is made up of single or several layers of epithelial cells. These tissue are present around the lining of esophagus, mouth, respiratory tract and urinary bladder. The main function of epithelial tissue is diffusion, secretion and protection of the organism.
Connective tissue:
The main connective tissue of the body is blood, tendons and ligament. Connective tissue mainly consists of fibers and ground substance. The blood helps in transportation of the substances. Tendons and ligaments helps in the connection of bones and cartilage.
Muscle tissue:
Muscle tissue mainly composed of the contractile protein like actin, myosin, tropomyosin and troponin. The main function of the muscle tissue is the movement and contraction of the muscles.
Nervous tissue:
Nervous tissue mainly composed of the dendrites, cell body, axon and axon terminals. The main function of nervous tissue is the propagation of action potential and response towards the external and internal stimuli of the body.