The depolarization phase of an action potential is punctuated by the closing of inactivation gates in the voltage gated sodium ion channels. All of the following are consequences of this inactivation except one
Choose the statement below that is not a consequence of the closing of inactivating gates.
A) This allows for the efflux (diffusion out) of potassium ions, resulting in the repolarization of the cell.
B) This allows for the one way transmission of action potential down the axon.
C) This limits the frequency of action potentials down the axon.
D) This stops the depolarization of the axon membrane.
A
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Which of the following supplies blood to major sections of the intestinal tract and the pancreas?
A) phrenic arteries B) superior mesenteric artery C) lumbar artery D) lateral sacral artery E) celiac artery
Which area is sensitive to the hormone ADH (which number(s))
Which of the following do(es) not develop from the embryonic neural crest?
A. Ciliary, pterygopalatine, and otic ganglia B. Preganglionic neurons of the sympathetic and parasympathetic divisions C. Sympathetic chain ganglia D. Terminal ganglia of the parasympathetic system E. The adrenal medulla
Blood type is an example of a trait that demonstrates
A. strict Mendelian inheritance. B. codominant inheritance. C. incomplete dominance. D. polygenic dominance. E. sex-linked recessiveness.