A boy has a genetic mutation such that FSH is not produced, but LH is normal. After the boy grows to maturity, it is likely he will
A) not develop secondary sex characteristics.
B) be sterile.
C) be impotent.
D) have impaired function of the interstitial cells.
E) produce large amounts of inhibin.
Answer: B
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Resting (membrane) potential is determined primarily by ____________ in the plasma membrane
a. leak channels. b. voltage-gated channels. c. ligand-gated channels. d. stretch-activated channels. e. phosphorylation-dependent channels.
What is the motor response in the light pupillary reflex?
A) Movement of eye to focus on near objects B) Contraction of ciliary bodies altering shape of lens to focus light C) Dilation of the smooth muscles of the iris D) Constriction of smooth muscles of the iris
The brain area that regulates activities that control the state of wakefulness or alertness of the cerebral cortex is the ________
A) reticular formation B) limbic system C) thalamus D) pyramids
Why is it important for impulses from the atria to be delayed at the AV node before they pass into the ventricles?
What will be an ideal response?