Page 782 - Atlas of Histology with Functional Correlations

Review Questions: Section 2

QUESTIONS

In the following multiple choice questions, choose the letter corresponding to the
one best answer.

1. What important role do the parafollicular (C) cells perform in the
system?

A. They secrete and release the hormone calcitonin.

B. They stimulate osteoclast activity.

C. They feed back on the pituitary gland to decrease its stimuli.

D. They secrete parathyroid hormone.

E. The function of these cells is not known.

2. What directly activates the osteoclasts to absorb bone?

A. High calcium levels in the blood

B. Increased levels of calcitonin

C. Release of osteoclast-stimulating factor from osteoblasts

D. Thyroid-stimulating hormone from the pituitary gland

E. Release of parathyroid-stimulating hormone

3. What physiological changes in the body induce the release of

aldosterone?

A. Increased blood pressure

B. Increased calcium levels

C. Decreased secretion of adrenocorticotropic hormone

D. Decreased filtration pressure in the kidneys

E. Increased volume of concentrated urine

4. What secretory products are released from the adrenal medulla?

A. Cortisol and cortisone

B. Epinephrine and norepinephrine

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