The posterior pituitary gland is not a 'true' endocrine gland because :
Correct answer: B. It only stores and releases hormones
- A. It is provided with a duct
- B. It only stores and releases hormones
- C. It is under the regulation of hypothalamus
- D. It secretes enzymes
Explanation
The posterior pituitary is not a true endocrine gland because it does not produce its own hormones. Instead, it functions as a storage area for hormones, specifically antidiuretic hormone (ADH) and oxytocin, which are synthesized in the hypothalamus. These hormones are transported down nerve fibers from the hypothalamus to the posterior pituitary, where they are then released into the bloodstream when stimulated.
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About Chemical Coordination and Hormones
Chemical coordination uses hormones released by endocrine glands and carried in blood to specific target cells. Coverage includes the pituitary, thyroid, pancreas, adrenal glands, ovaries and testes, feedback control, and the contrast between slower, longer-lasting hormonal responses and rapid nervous coordination.
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