Which of the following statements about the hypothalamus is endocrine gland, b)

Question

Which of the following statements about the hypothalamus is endocrine gland, b) It is part of the central nervous system, c) It is subject to feedback inhibition by certain hormones, d) It secretes tropic hormones that act directly on the gonads, e) its neurosecretory cells terminate in the posterior pituitary. Sensory receptors can be: a) organs, b) cells, c) structures that detect specific stimuli from the internal or external environment, d) all of the above Which of the following is (are) true? a) Hormones regulate cellular functions. and generally negative feedback regulates hormone levels, b) The circulating level of a hormone is held constant through a series of positive feedback loops, c) Both lipid-like hormones and peptide hormones bind to intracellular protein receptors, d) The ducts of endocrine organs release their contents into the bloodstream, e) Only a and d are true. A cell that contains receptors enabling a hormone to selectively bind to its plasma membrane is called a(n) a) secretory cell, b) plasma cell, c) endocrine cell, d) target cell. Only certain cells in the body are target cells for the steroid hormone aldosterone. Which of the following is the best explanation for why these are the only cells that respond to this hormone? a) Only target cells are exposed to aldosterone, b) Only target cells contain receptors for aldosterone, c) Aldosterone is unable to enter non-target cells, d) Non-target cells destroy aldosterone before it can produce its effect e) Non-target cells convert aldosterone to a hormone to which they do respond

Explanation / Answer

6. Which of the following statements about the hypothalamus is incorrect

d) it release tropic hormones that act directly on the gonads

7. Sensory receptors can be :

d) all of the above

they may be organs, cells and the structures that detect spceific stimuli from the internal or the external environment

8. Which of the following is true?

a) hormone regulate cellular functions, and generally negative feedback regulates hormone levels.

9. A cell that contain receptor enabling a hormone to selectively bind to its plasma membrane is called a(n)

d) target cell

10. Only certain cells in the body are target cell for the steriod hormone aldosterone. Which of the following is the best explanation for why these are the only cells that respond to this hormone?

b) Only target cells contain receptors for aldosterone.

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