For the repolarization phase of an SA nodal cell action potential,
A. sodium and potassium channels open.
B. calcium channels open and sodium channels close.
C. calcium and potassium channels close.
D. calcium channels close and potassium channels open.
E. sodium and chloride channels open.
D
You might also like to view...
Farmers who falsely label foods as organic may be required to pay expensive fines.?
Indicate whether the statement is true or false
If your classmate asked you to point to your digital region, where would you point?
A. To your ankle B. To your arm C. To your fingers or toes D. To your thigh E. To your abdomen
Which of the following muscles does not have an action that is antagonistic to the action of the brachialis muscle?
A) anconeus B) triceps brachii lateral head C) triceps brachii long head D) triceps brachii medial head E) brachioradialis
Which of the following is NOT a function of cell biology?
a. cell division c. flexion b. metabolism d. phagocytosis