In an antagonistic muscle pair:
A. one muscle undergoes flexion, whereas
the other undergoes extension.
B. both muscles undergo flexion
simultaneously.
C. both muscles undergo extension
simultaneously.
D. the two muscles combine forces to
produce similar motions.
E. None of the answer options is correct.
A
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Neural activity involves transmission of information through electrical events, in contrast endocrine
activity involves
a. transport of hormones in the circulation system to target tissues. b. transport of hormones in neurons to target tissues. c. release of hormones in body fluids for transport. d. changes in neural activity for transport of hormones to target tissues. e. transmission of information through chemical reactions.
Antidiuretic hormone:
a. promotes processes that lead to an increase in the volume of urine b. makes the distal tubule and collecting ducts more permeable to water c. acts on the proximal tubules of nephrons in the kidney d. is produced by the adrenal cortex e. changes the water permeability of the ascending limb of the loop of Henle
Which of the following innate internal defenses work by interfering with viral replication?
What will be an ideal response?
Light from the left half of the visual field
a. strikes receptors on the right side of the right retina. b. strikes receptors on the right side of the left retina. c. generates signals that are sent back to the right visual cortex. d. does all of these. e. does none of these.