Once an SA nodal cell reaches threshold, the depolarization phase occurs during which
A. potassium comes in through fast voltage-gated channels.
B. calcium comes in through fast voltage-gated channels.
C. potassium moves out through fast voltage-gated channels.
D. sodium moves out through slow voltage-gated channels.
E. calcium moves out through slow voltage-gated channels.
B
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Which of the following statements regarding endocytosis or exocytosis is correct?
A. Pinocytosis is a form of exocytosis; phagocytosis is a type of endocytosis. B. Pinocytosis and phagocytosis are both types of exocytosis. C. Pinocytosis is a form of endocytosis; phagocytosis is a type of exocytosis. D. Endocytosis is a method by which large molecules may be secreted from a cell. E. Exocytosis is a method by which large molecules may be secreted from a cell.
The production of an unusually large amount of urine is called:
a. anuria b. polyuria c. oliguria d. glycosuria
In the male, the urethra is subdivided into three parts; the middle portion is called the ____ urethra
a. prostatic b. spongy c. cavernous d. membranous
How does alcohol act as a diuretic?
A. By increasing blood flow to the kidney B. By inhibiting the secretion of ADH C. By inhibiting active transport of sodium D. None of these are correct.