Kin 267 Cardiorespiratory System

Kin 267 Cardiorespiratory System

University

61 Qs

quiz-placeholder

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Kin 267 Cardiorespiratory System

Kin 267 Cardiorespiratory System

Assessment

Quiz

Biology

University

Easy

Created by

Mya M

Used 2+ times

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61 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Stimulation of sinoatrial node by sympathetic system nerves results in an increase of heart rate

Positive chronotropic effect

Positive inotropic effect

Positive dromotropic effect

Negative chronotropic effect:

Negative inotropic effect

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Stimulation of atria & ventricles by sympathetic nervous system causes an elevation in intracellular (Ca2+), increasing contractility

Positive chronotropic effect

Positive inotropic effect

Positive dromotropic effect

Negative chronotropic effect:

Negative inotropic effect

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Stimulation of sinoatrial & atrioventricular nodes by sympathetic nervous system enhances conductivity of electrical signal, such as increasing AV conduction velocity

Positive chronotropic effect

Positive inotropic effect

Positive dromotropic effect

Negative chronotropic effect:

Negative inotropic effect

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Stimulation of sinoatrial node by Vagus nerve lowers heart rate

Negative dromotropic effect

Positive inotropic effect

Positive dromotropic effect

Negative chronotropic effect:

Negative inotropic effect

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

currently questionable since Vagus nerve does not directly innervate cardiomyocytes other than sinoatrial & atrioventricular nodes.

Negative dromotropic effect

Positive inotropic effect

Positive dromotropic effect

Negative chronotropic effect:

Negative inotropic effect

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Stimulation of sinoatrial & atrioventricular nodes by Vagus nerve inhibits conductivity of electrical signal, such as increasing AV conduction velocity

Negative dromotropic effect

Positive inotropic effect

Positive dromotropic effect

Negative chronotropic effect:

Negative inotropic effect

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

are specialized, striated muscle cells that make up heart muscle (myocardium) & are responsible for its rhythmic contractions

Cardiomyocytes

Myofibrils

Mitochondria

Gap Junctions

Contractile Cardiomyocytes

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