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Heart part 2

Authored by Andrew Corless

Biology

University

Used 3+ times

Heart part 2
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7 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Are you here?

yes

no

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The ___ is the heart's pacemaker

sinoatrial node

atrioventricular node

atrioventricular bundle

purkinje fibers

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In nodal cells, depolarization is due to opening of

voltage gated sodium channels

voltage gated calcium channels

voltage gated potassium channels

chemically gated sodium channels

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

During the _____ phase of the cardiac action potential, slow voltage gated calcium channels open and calcium enters the cell.

depolarization

plateau

depolarization

resting

5.

MULTIPLE SELECT QUESTION

1 min • 5 pts

The atrioventricular valves are open during which phases of the cardiac cycle? (choose all that apply)

atrial contraction and ventricular filling

isovolumetric contraction

ventricular ejection

isovolumetric relaxation

atrial relaxation and ventricular filling

6.

MULTIPLE CHOICE QUESTION

1 min • 5 pts

The semilunar valves are open during which phase of the cardiac cycle?

atrial contraction and ventricular filling

isovolumetric contraction

ventricular ejection

isovolumetric relaxation

atrial relaxation and ventricular filling

7.

MULTIPLE CHOICE QUESTION

1 min • 5 pts

Pressure in the ventricles is highest during which phase of the cardiac cycle?

atrial contraction and ventricular filling

isovolumetric contraction

ventricular ejection

isovolumetric relaxation

atrial relaxation and ventricular filling

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