Module Two Lesson One Assignment
By Karla Perez
Epithelial forms the coverings of surfaces of the body. As such, it serves many purposes, including protection, adsorption, excretion, secretion, filtration, and sensory reception.
Connective tissue is the most abundant and widely distributed tissue type found in the human body. The role of connective tissue is to protect, support, and bind together parts of the body.
Nervous tissue is the main component of the two parts of the nervous system; the brain and spinal cord of the central nervous system, and the branching peripheral nerves of the peripheral nervous system, which regulates and controls bodily functions and activity.
Muscle tissue has an ability to relax and contrasts and so bring about movement and mechanical work in various parts of the body. There are other movements in the body too which are necessary for the survival of the organism such as the heartbeat and the movements of the alimentary canal.
The muscle tissue consists of three different parts. Starting with the skeletal muscle- these muscles are attached to bones and play a major role in our bodies in order for us to move. It also made up of long fibers and had a striated feature due to the repetition of filaments that are made up the fibers. Next, the Cardiac muscle also has that striated feature that the skeletal muscle does but is different in a way that the plasma membrane causes the heart to beat even when it's away from it. Lastly, the smooth muscle is found in the organs and helps them function. Unlike the other muscles in the muscle tissue, the skeletal muscle is not striated. It also doesn't have as much myosin as the others; it also doesn't generate tension as the skeletal muscle.