Spermatogenesis is directly controlled by
a. LH
b. FSH
c. prostaglandins
d. both a and c
e. both b and c
B
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A blood clot attached to the inner surface of a blood vessel is called a
A) embolus. B) plaque. C) thrombus. D) platelet plug. E) fibrin mesh.
During the steady state, the concentration and electrical gradients for K+ are in opposition to each other and exactly balance each other so there is no net movement of K+
Indicate whether the statement is true or false
The prolonged electrical depolarization of cardiac muscle cells that occurs during contraction is due primarily to the persistent influx of what ion?
A. Calcium B. Nitrate C. Potassium D. Chloride E. Sodium
Which of the following forms of birth control does not prevent conception (fertilization)?
A) an IUD B) a condom C) a diaphragm D) a vasectomy E) all of the above do prevent conception