Which one of the following is a steroid hormone?
Correct answer: D. Estrogen
- A. Glucagon
- B. Epinephrine
- C. Thyroxin
- D. Estrogen
Explanation
Estrogen is a steroid hormone that plays a crucial role in the development and regulation of the female reproductive system. It is produced mainly by the ovaries and helps control the menstrual cycle, promote secondary sexual characteristics in females, and maintain pregnancy.
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About Coordination and Control
Coordination depends on receptors, neurons, synapses and nerve impulses, with reflex actions traced through the reflex arc and the roles of major brain regions. Chemical coordination covers endocrine glands and hormones, including how hormones regulate growth, metabolism, reproduction and internal balance, unlike rapid nervous control.
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