When is the S2 heart sound heard?
A) ventricular ejection phase B) isovolumetric contraction phase
C) isovolumetric relaxation phase D) ventricular filling
Answer: C
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Both male and female human gametogenesis result in 4 functional gametes, each with 23 chromosomes.
Answer the following statement true (T) or false (F)
Like humans, pigs have a common iliac artery that gives rise to the external and internal iliac arteries
A) True B) False
Cross-cultural studies of human sexual behavior show that:
A. enormous variation in behavior exists across cultures. B. there is virtually no variation in behavior across cultures. C. variation in behavior across cultures can be attributed to differences in biological makeup. D. variation in behavior can be explained by how modern the society is.
Hypoventilation causes __________.
a) an increase in blood pH b) a decrease in respiratory rate c) an increase in blood PO2 d) an increase in blood PCO2