______________ is responsible for the development of male characteristics, including: muscle mass and stregth, fat distribution, bone mass and the sex drive.
Fill in the blank(s) with the appropriate word(s).
Answer: Testosterone
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Hypernatremia is a body retention of ____________________
Fill in the blank(s) with correct word
Which of the following structures are found in veins but NOT in arteries?
a) tunica externa b) tunica media c) tunica interna d) valve e) lumen
In people who stand for long periods, blood tends to pool in the lower limbs and this may result in varicose veins. What causes the varicose veins?
A) An aneurysm or weak point in a vein B) An aneurysm or weak point in an artery C) Failure of the venous valves D) Failure of the lymphatic valves E) A ruptured aneurysm in a vein
What is one difference between the adrenal cortex and the adrenal medulla?
A. The adrenal cortex secretes epinephrine and norepinephrine while the medulla secretes steroid hormones. B. The adrenal cortex ultimately develops from embryonic mesoderm while the medulla develops from embryonic ectoderm. C. The adrenal cortex is a modified sympathetic ganglion. D. The adrenal cortex consists of modified postganglionic sympathetic neurons while the medulla consists of glandular cells. E. There is no significant difference between the two regions of the adrenal gland.