Which one is incorrect in the following:

(1) Inter atrial septa – thin and muscular

(2) Atrio- ventricular septa- thick and fibrous

(3) Inter ventricular septa -thick and muscular

(4) Pericardium- muscular

Subtopic:  Human Heart: Gross Anatomy |
 60%
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SAN is present in -------------- while AVN is present in-----------.

(1) Right upper corner and left lower corner of both the atria.

(2) Right upper corner and left lower corner of right atrium.

(3) Right upper corner and left lower corner of left atrium.

(4) Right upper corner and left median corner of left atrium.

Subtopic:  Rhythmic Excitation of Human Heart: Part 1 |
 86%
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Which one of the following is wrong with respect to nodal tissue.

(1) auto excitable

(2) not localized to a single chamber.

(3) equal ability to excite throughout nodal tissue.

(4) structural changes are observed throughout nodal musculature in different chambers of the heart.

 

Subtopic:  Rhythmic Excitation of Human Heart: Part 1 |
 56%
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The duration of cardiac cycle is-

(1) 0.8 second

(2) 0.5 second

(3) 0.3 second

(4) 0.4 second

Subtopic:  Human Heart: Cardiac Cycle |
 98%
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The number of action potential generated by SAN:

(1) 70-75 times per minute.

(2) 50-72 times per minute.

(3) Exact 70 times per minute.

(4) not more than 60 times per minute.

Subtopic:  Rhythmic Excitation of Human Heart: Part 1 |
 98%
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The route of action potential in heart is

(1) SA node- AV node- AV bundle

(2) AV node- SA node- bundle of his- AV bundle.

(3) SA node- AV node- AV bundle- Bundle of His

(4) SA node-AV node- Purkinje fibres

Subtopic:  Rhythmic Excitation of Human Heart: Part 1 | Rhythmic Excitation of Human Heart: Part 2 |
 85%
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The closure of which valves causes Dub sound?

(1) AV valves

(2) Semilunar valves

(3) both 1 and 2

(4) only tricuspid valve

Subtopic:  Human Heart: Cardiac Cycle |
 93%
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The machine taking the reading of electrical activity of heart is known as

(1) Electrocardiogram

(2) Electrocardiograph

(3) MRI

(4) Biopsy

Subtopic:  ECG & Coronary Artery Disease |
 78%
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The results of ECG are known as

(1) Electrocardiogram

(2) Electrocardiograph

(3) MRI

(4) Biopsy

Subtopic:  ECG & Coronary Artery Disease |
 87%
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The standard ECG is obtained by connecting the patient to the machine with how many leads?

(1) 4

(2) 3

(3) 1

(4) 2

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