The relative refractory period of an excitable membrane refers to the period of time during which no stimulus, however strong, will elicit a second action potential in the membrane
Indicate whether the statement is true or false.
FALSE
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The largest possible amount of a substance that can be reabsorbed or secreted across a kidney tubule wall in a given duration of time is known as the
A. glomerular filtration rate. B. renal threshold. C. transport maximum. D. net filtration pressure. E. renal clearance exponent.
Matching
A) E B) B C) D D) C E) A 6) Splenic vein. 7) Superior mesenteric vein. 8) Inferior mesenteric vein. 9) Hepatic portal vein. 10) Right gastroepiploic vein.
The drug atropine influences the autonomic nervous system by
A. blocking the action of norepinephrine. B. blocking the action of acetylcholine. C. stimulating the release of acetylcholine. D. stimulating the release of norepinephrine.
Calcium's roles in the body include
A. bone health. B. muscle contraction. C. action potentials in heart muscle. D. blood clotting. E. All of the choices are correct.