Select the structure that serves as a common passageway for two tracts in the male
a. anterior pituitary
b. ductus deferens
c. ejaculatory duct
d. ureter
e. urethra
E
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The electrocardiogram (ECG) shows a record of ________
A) electrical activity of the heart muscle B) each heart beat (or contraction) C) the electrical events in the intrinsic conduction system
From which germ layers do the extra-embryonic membranes form, and what are each membrane's functions?
What will be an ideal response?
Axons exit the sympathetic chain ganglia by all of the following except
A. spinal nerves. B. cranial nerves. C. splanchnic nerves. D. sympathetic nerves. E. nerves that innervate the adrenal medulla.
What is the main role of magnesium ions in the body?
A. muscle contraction B. nerve impulse C. blood clotting D. cofactors for intracellular enzymes