Multiple Choice
Once cells in the SA node reach threshold,
A) an action potential is triggered.
B) a heart attack occurs.
C) nothing happens until the AV node is innervated.
D) the heart stops beating.
Correct Answer:
Verified
Correct Answer:
Verified
Related Questions
Q2: The external carotid arteries branch to supply
Q3: Blood from the face and scalp is
Q4: In mitral valve prolapse, the mitral valve<br>A)is
Q5: Impulses that the vagus nerve carries to
Q6: Listening with a stethoscope just to the
Q8: Marjorie suffers from phlebitis. She has<br>A)inflammation of
Q9: The heart pumps about _ liters of
Q10: The SA node relays nerve impulses into
Q11: Which artery is incorrectly matched to its
Q12: Doctors suggest that during long periods of