Human Heart has SA node which makes it–

(1) myogenic heart

(2) neurogenic heart

(3) Digenic Heart

(4) Rhinogenic Heart

Subtopic:  Human Heart: Gross Anatomy |
 94%
From NCERT
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The neurocenter for the activity of the Heart is located in

1. Pons

2. midbrain

3. medulla oblangata

4. cerebrum

Subtopic:  Regulation of Cardiac Activity |
 89%
From NCERT
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Medulla Oblangata regulates the Cardiac activity via

(1) CNS

(2) ANS

(3) PNS

(4) CNS and PNS

Subtopic:  Regulation of Cardiac Activity |
 65%
From NCERT
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The sympathetic nerves give _______ neural signals to heart and increases the _______.

(1) stimulatory, ventricular contraction

(2) inhibitory, stroke volume

(3) stimulatory, ventricular relaxation

(4) inhibitory, ventricular relaxation

Subtopic:  Regulation of Cardiac Activity |
 85%
From NCERT
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If the strength of ventricular contraction increases then it will cause

(1) increase in Heart beat rate

(2) increase in cardiac output

(3) reduced supply of oxygen

(4) both (1) and (2)

Subtopic:  Human Heart: Cardiac Cycle |
 85%
From NCERT
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What is the effect of parasympathetic neural signals on Heart Activity?

1. decreases the rate of heart beat

2. decreases the speed of conduction of action potential

3. decreases the cardiac output

4. all of these

Subtopic:  Regulation of Cardiac Activity |
 93%
From NCERT
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Arteries have ________ layer of smooth muscles than ________

(1) thicker, vein

(2) thicker, aorta

(3) thinner, vein

(4) thinner, aorta

Subtopic:  Human Heart: Double Circulation |
 79%
From NCERT
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The hormonal regulation of Cardiac output is

(1) mediated by adrenal cortex

(2) mediated by adrenal medulla

(3) mediated by thyroid

(4) mediated by pineal

Subtopic:  Regulation of Cardiac Activity |
 81%
From NCERT
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The normal blood pressure is _____ and if it gets increased, such disorder is called _____

(1) 120/80; hypertension

(2) 80/120; blood tension

(3) 120/80; high blood pressure

(4) both (1) and (3)

Subtopic:  Atherosclerosis, Hypertension & Ventricular Fibrillation |
 65%
From NCERT
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The pumping pressure of healthy heart is

(1) 120 mmHg

(2) 80 mmHg

(3) 140 mmHg

(4) 90 mmHg

Subtopic:  Human Heart: Cardiac Cycle |
 90%
From NCERT
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