Question

Explain chemical co-ordination in humans and give the names and functions of some hormones.

Answer 1

Chemical coordination is controlled by the functioning of different endocrine glands in the body. The endocrine glands are ductless glands that secrete hormones, a series of chemical substances that control the biochemical functions in the body. These changes help coordinate functions of the body systems.

Examples of hormones:

• Thyroxine hormone is secreted by the thyroid gland that regulates overall body metabolism.
• The pancreas secretes insulin which facilitates the passage of glucose into all body cells for use in energy metabolism. Glucagon is secreted from the pancreas which increases the blood glucose level.
• Growth hormone secreted from the anterior region of the pituitary gland helps with the development of the individual.