Answer:
Two Categories:
Cells that do not divide once they have developed
-Muscle Cells
-Nerve cells
Cells that grow and divide throughout life
-Skin cells
-blood-producing cells
-digestive tract cells
Explanation:
The nerve cells and some of the muscle cells like cardiac cells do not divide once they have developed, while the skin cells, the smooth muscle cells, the blood-producing cells, and the cells of the digestive tract cells grow and divide throughout life.
• The nerve cells and the cardiac cells rarely or not at all divide once they get developed.
• Of the muscle cell types, the smooth muscles cells exhibit the greatest tendency to regenerate all through life. The smooth muscle cells exhibit the tendency to differentiate and can grow in different ways.
• The skin cells possess the tendency to regenerate and grow throughout their lives. The dead skin cells continuously elevate to the surface of the body and get shed off, and get substituted by the new skin cells.
• Blood-producing cells also possesses the tendency to grow and divide all through life, the blood cells range from less than a day to several days, and are produced spontaneously by the division of common stem cell in the bone marrow.
• The intestine of the digestive tract is the most regenerative organ of the human body, possesses the tendency to regenerate its lining, that is, the epithelium after every 5 to 7 days.
Thus, the cardiac cells and nerve cells do not divide once they get developed, while the smooth muscle cells, the nerve cells, the blood-producing cells, and the digestive tract cells grow and divide throughout life.
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