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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The pumping pressure is also known as ______ and the resting pressure is also known as ______

(1) systolic pressure, diastolic pressure

(2) diastolic pressure, systolic pressure

(3) normal pressure, abnormal pressure

(4) abnormal pressure, normal pressure

Subtopic:  Human Heart: Cardiac Cycle |
 94%
From NCERT
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Hypertension affects mainly organ:

(1) Intestine

(2) Kidney

(3) Liver

(4) Eyes

Subtopic:  Atherosclerosis, Hypertension & Ventricular Fibrillation |
 84%
From NCERT
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Coronary Artery Disease is also referred as

(1) Atherosclerosis

(2) Angina

(3) Heart failure

(4) Heart attack

Subtopic:  ECG & Coronary Artery Disease |
 88%
From NCERT
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Atherosclerosis affects

(1) the vessel which supply blood to kidney

(2) the vessel which supply blood to brain

(3) the vessel which supply blood to heart muscle

(4) the vessel which supply blood to lungs

Subtopic:  ECG & Coronary Artery Disease |
 89%
From NCERT
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The lumen of arteries gets ______ because ______ of ______

(1) narrower, dissolution, fat, cholesterol and fibrous tissues.

(2)narrower, deposition, fat, cholesterol and fibrous tissues.

(3) wider, deposition, fat, cholesterol and fibrous tissues.

(4) wider, dissolution, fat, cholesterol and fibrous tissues.

Subtopic:  ECG & Coronary Artery Disease |
 88%
From NCERT
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