The copulatory plug
a. can be found in certain insects.
b. prevents semen from escaping from the female reproductive tract.
c. lasts until the offspring are born.
d. can be found in certain insects and prevents semen from escaping the female reproductive tract.
e. all of these.
D
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Which of the following are standard treatments for muscle injuries? Select all that apply.
_____ Elevate the injured limb. _____ Apply ice to the injury. _____ Rest the affected area. _____ Compress the injured area with an elastic bandage. What will be an ideal response?
The thymus is the only lymphoid organ that does not:
A) have lymphocytes B) produce hormones C) have a cortex and medulla D) directly fight antigens
Structure H is the
A) nasal.
B) lacrimal.
C) maxilla.
D) ethmoid.
E) palatine.
When blood glucose levels fall, ________.
A) only peripheral cells take up less glucose. B) only insulin is released. C) only glucagon is released. D) only protein synthesis decreases. E) All of these answers are correct.