The figure illustrates changes in the membrane potential during an action potential. What does "C" represent?
A. Repolarization
B. Depolarization
C. Afterpotential
D. Local potential
E. Threshold
Answer: A
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Within what timeframe must fertilization occur after ovulation?
a. 24 hours b. 48 hours c. 72 hours d. 5 days e. 7 days
Homeostatic mechanisms in response to blood loss include all of the following except
A) uptake of interstitial fluid due to reduced capillary pressure. B) inhibition of EPO secretion. C) activation of ADH secretion. D) activation of aldosterone secretion. E) increased thirst and water intake.
The midpiece of the sperm:
a. supplies enzymes to break down the covering of the ovum b. contains mitochondria c. holds 23 chromosomes d. is a whip-like structure that provides movement for the sperm
Which substance(s) pass(es) through the hepatopancreatic sphincter?
A. Bile only B. Bile and pancreatic juice C. Bile and gastric juice D. Pancreatic juice only E. Gastric juice only