- 1(current)
Q. No.Which of the following is not a part of human central neural system ?
1. Pericardium
2. Arachnoid
3. Dura mater
4. Pia mater
1. Pericardium
2. Arachnoid
3. Dura mater
4. Pia mater
Subtopic: Â Human Heart: Gross Anatomy |
 77%
Level 2: 60%+
NEET - 2026
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The opening between the right atrium and the right ventricle is guarded by ___________.
1. sino-atrial node
2. bicuspid valve
3. tricuspid valve
4. semilunar valve
1. sino-atrial node
2. bicuspid valve
3. tricuspid valve
4. semilunar valve
Subtopic: Â Human Heart: Gross Anatomy |
 71%
Level 2: 60%+
NEET - 2026
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Match List-I with List-II:
Choose the correct answer from the options given below:
| List-I | List-II | ||
| A. | Tricuspid valves | I. | Guards the opening between right atrium and right ventricle |
| B. | Sino-atrial node | II. | Guards the opening between the left atrium and the left ventricle |
| C. | Mitral valves | III. | Guards the opening of right and left ventricles into pulmonary artery and aorta, respectively |
| D. | Semilunar valves | IV. | Cardiac musculature in the right upper corner of right atrium |
| 1. | A-III, B-IV, C-II, D-I | 2. | A-II, B-I, C-IV, D-III |
| 3. | A-III, B-IV, C-I, D-II | 4. | A-I, B-IV, C-II, D-III |
Subtopic: Â Human Heart: Gross Anatomy |Â Human Heart: Cardiac Cycle |Â Circulatory Pathways |
 83%
Level 1: 80%+
NEET - 2024
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All the components of the nodal tissue are autoexcitable. Why does the SA node act as the normal pacemaker?
| 1. | SA node has the lowest rate of depolarisation |
| 2. | SA node is the only component to generate the threshold potential. |
| 3. | Only SA node can convey the action potential to the other |
| 4. | SA node has the highest rate of depolarisation. |
Subtopic: Â Human Heart: Gross Anatomy |
Level 3: 35%-60%
NEET - 2019
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- 1(current)
Q. No.
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