Which of the following occurs first in the generation of an action potential?
A) Voltage-gated potassium channels open.
B) The membrane repolarizes.
C) The membrane depolarizes.
D) Voltage-gated sodium channels open
Answer: C) The membrane depolarizes.
You might also like to view...
Antigen displaying cells are infected by pathogens so they can display the antigens
Indicate whether the statement is true or false.
The cranial nerve that passes through the cribriform plate of the ethmoid bone is the __________ nerve
A. optic B. olfactory C. trigeminal D. oculomotor E. abducens
What is the process whereby molecules are selectively transported from the peritubular fluid to the
A) glomerular filtration B) secretion C) reabsorption D) absorption E) excretion
Poison ivy contains a toxin that acts as a hapten by
A. raising the body's sensitivity to a wide variety of chemicals such as penicillin. B. preventing effective immune responses by blocking release of bradykinin. C. combining with a body protein and then triggering an immune response. D. cutting plasma protein antibodies in half.