A decrease in the autonomic tone of the smooth muscle in a blood vessel would result in
A) an increase in vessel diameter.
B) a decrease in vessel diameter.
C) oscillation in vessel diameter.
D) an increase in blood flow through the vessel.
E) both an increase in vessel diameter and an increase in blood flow through the vessel.
Answer: E
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When the tympanic membrane vibrates with the same frequency as the incoming sound waves it is known as
A) resonance. B) amplitude. C) pitch. D) hertz. E) cycles.
Which of the following anatomical sequences is correct?
A) tympanum - incus - malleus - stapes - oval window - round window B) tympanum - incus - malleus - stapes - round window - oval window C) tympanum - malleus - incus - stapes - oval window - round window D) tympanum - incus - stapes - malleus - oval window - round window E) tympanum - malleus - incus - stapes - round window - oval window
In the proximal tubule, sodium moves from the lumen into the tubule epithelial cell by diffusion through sodium channels.
a. true b. false
What is necessary for the production of T3 and T4 thyroid hormone?
A) calcium B) amino acids C) iodine D) chloride