Which is not characteristic of the parasympathetic division of the ANS?
A. Long preganglionic axons
B. Long postganglionic axons
C. Terminal ganglia close to the target organ
D. No rami communicantes
E. Craniosacral preganglionic neuron cell bodies
Answer: B
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A drug that restricts the activity of angiotensin converting enzyme (ACE) would like result in all of the following physiologic changes but one. Which of the following is the least likely to result from a drug blocking ACE activity?
A) decreased peripheral resistance due to decreases vasomotor tone B) lower levels of circulating aldosterone and lowered sodium reabsorption C) increased thirst and higher blood volume D) increased urine output due to reduction in circulating antidiuretic hormone (ADH)
Which structure removes excess water and solutes from the kidney's medullary interstitial fluid?
A. Collecting duct B. Distal convoluted tubule C. Vasa recta D. Loop of Henle E. Proximal convoluted tubule
If class-2 MHC molecules were found on ________, donations of this tissue would drastically decrease.
A. red blood cells B. liver cells C. kidneys D. bone marrow
Ethnic differences in skin color are primarily caused by differences in ________
A) the quantity of melanin produced B) UV radiation exposure C) the number of melanocytes D) the quantity of hemoglobin carried in the blood E) the number of keratinocytes