Cardiovascular System

Presentation

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Science

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University

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Practice Problem

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Hard

•

NGSS

HS-PS2-5

Standards-aligned

Harini narayanam

Used 1K+ times

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0 Slides • 10 Questions

Multiple Choice

Name the event that happens at part labelled 1.

Pacemaker potential

Depolarization

Repolarization

Hyperpolarization

Multiple Choice

Which of the following values represents the firing rate of SA node?

70-80 Ap/min

50-60 AP/min

40-60 AP/min

20-40 AP/min

Multiple Choice

Name the phase that happens at part labelled 1?

Depolarization

Mild repolarization

Plateau

Repolarization

Multiple Choice

The phase labelled 2 is because of which of the following ?

Influx of sodium ions

Efflux of potassium

Influx of calcium ions

sodium-potassium ATPAse

Multiple Choice

Which of the following events produces the first heart sound ?

Opening of Av valves

Closing of AV valves

Opening of Semilunar valves

Closing of semilunar valves

Multiple Select

Second heart sound is heard clearly at which areas of the heart? Mark all that applies.

Aortic area

Tricuspid area

Mitral area

Pulmonary area

Multiple Choice

The 'P' wave in an ECG represents which of the following events ?

ventricular repolarization

atrial repolarization

ventricular depolarization

atrial depolarization

Multiple Choice

Which of the following values represents the stroke volume in a normal adult ?

50 ml

60 ml

70 ml

80 ml

Multiple Select

which of the following may cause congestive heart failure ? Select all that apply.

Coronary atherosclerosis

Low blood pressure

myocardial infarcts

Bradycardia

Multiple Choice

Which of the following is responsible for the plateau phase in ventricular action potential ?

Influx of sodium

Influx of Potassium

Influx of magnesium

Influx of calcium

Name the event that happens at part labelled 1.

Pacemaker potential

Depolarization

Repolarization

Hyperpolarization

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