The longest portion of the male urethra is the
A. prostatic urethra.
B. membranous urethra.
C. spongy urethra.
D. ductile urethra.
E. glans penal urethra.
C
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You would like to see what infections a patient has been fighting recently; one way to do this is to isolate cytotoxic T cells and look into their phagosomes to see what pathogens they have been engulfing through phagocytosis.
Answer the following statement true (T) or false (F)
What is NOT a function of the peroxisome?
A) oxidize toxic substances B) break down fatty acids C) synthesize certain phospholipids D) protein synthesis
Enkephalins produce presynaptic inhibition in neurons transmitting pain signals. Increased levels of enkephalins will
A. increase awareness of pain. B. decrease awareness of pain. C. increase amount of pain. D. decrease amount of pain. E. have no effect on awareness or amount of pain.
Urea is a by-product of the metabolism of
A. cholesterol. B. amino acids. C. sugars. D. fats.