Cardiac pacemaker cells have an unstable resting membrane potential as the result of an unusual __________ current.
A) magnesium
B) sodium
C) chloride
D) calcium
Correct Answer:
Verified
Q22: Electrical signals move through the mammalian heart
Q23: Tachycardia is a term that refers to
A)lower
Q24: How do cardiomyocytes communicate with one another?
A)neurotransmitters
B)gap
Q25: Angiogenesis refers to
A)damage to blood vessels.
B)synthesis of
Q26: The rising phase of a cardiac pacemaker
Q28: Which of the following possibilities is incorrect?
Q29: How do substances move across capillaries?
A)diffusion
B)through pores
C)transcytosis
D)all
Q30: The end-diastolic volume is
A) the maximum volume
Q31: Norepinephrine has the following effect on pacemaker
Q32: Cardiac output is a function of heart
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