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Q. No.An increase in the ventricular pressure during ventricular systole leads first to:
1. closure of tricuspid and bicuspid valves
2. opening of aortic and pulmonic semilunar valves
3. opening of tricuspid and bicuspid valves
4. Closure of aortic and pulmonic semilunar valves
Subtopic: Human Heart: Cardiac Cycle |
73%
From NCERT
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Consider the given two statements:
| I: | The type of antigen present on the RBCs of a person with blood group type A is A |
| II: | The type of antibodies present in the plasma of a person with blood group type A is anti-A |
| 1. | Only I is correct |
| 2. | Only II is correct |
| 3. | Both I and II are correct |
| 4. | Both I and II are incorrect |
Subtopic: Blood: Blood Group (A,B,O) |
77%
From NCERT
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Cardiac output can be increased by:
| I: | Neural signals through sympathetic nerves |
| II: | Neural signals through parasympathetic nerves |
| III: | Adrenal medullary hormones |
| 1. | Only I and II |
| 2. | Only I and III |
| 3. | Only II and III |
| 4. | I, II and III |
Subtopic: Regulation of Cardiac Activity |
83%
From NCERT
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Two heart sounds are normally produced during a cardiac cycle. The first of these is produced due to the:
| 1. | simultaneous opening of atrio-ventricular valves |
| 2. | simultaneous opening of semilunar valves |
| 3. | simultaneous closure of semilunar valves |
| 4. | simultaneous closure of atrio-ventricular valves |
Subtopic: Human Heart: Cardiac Cycle |
80%
From NCERT
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Match each item in Column I with one in Column II and select the correct match from the codes given:
Codes:
| COLUMN I | COLUMN II | ||
| A | Heart failure | P | The heart stops beating |
| B. | Cardiac arrest | Q | Heart not pumping blood, effectively enough, to meet the needs of the body |
| C. | Heart attack | R | Heart beats more slowly or with an abnormal rhythm |
| D. | Heart block | S | Heart muscle is suddenly damaged by an inadequate blood supply |
Codes:
| A | B | C | D | |
| 1. | Q | P | S | R |
| 2. | P | Q | S | R |
| 3. | P | Q | R | S |
| 4. | S | R | P | Q |
Subtopic: Atherosclerosis, Hypertension & Ventricular Fibrillation |
79%
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During the coagulation of blood:
| 1. | Fibrinogen is activated by the enzyme plasmin |
| 2. | Prothrombin is activated by the enzyme fibrinolysin |
| 3. | The basophils release certain factors which activate the mechanism of coagulation |
| 4. | Calcium ions play a very important role |
Subtopic: Blood: Blood Clotting |
88%
From NCERT
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Given below are two statements:
In the light of the above statements, choose the most appropriate answer from the options given below:
1. Statement I is incorrect but Statement II is correct.
2. Both Statement I and Statement II are correct.
3. Both Statement I and Statement II are incorrect.
4. Statement I is correct but Statement II is incorrect.
| Statement I: | The coagulum is formed of network of threads called thrombins. |
| Statement II: | Spleen is the graveyard of erythrocytes. |
In the light of the above statements, choose the most appropriate answer from the options given below:
1. Statement I is incorrect but Statement II is correct.
2. Both Statement I and Statement II are correct.
3. Both Statement I and Statement II are incorrect.
4. Statement I is correct but Statement II is incorrect.
Subtopic: Blood: Blood Clotting | Blood: General Description & RBC |
66%
From NCERT
NEET - 2022
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Which one of the following statements is correct?
| 1. | Increased ventricular pressure causes closing of the semilunar valves. |
| 2. | The atrio-ventricular node (AVN) generates an action potential to stimulate atrial contraction. |
| 3. | The tricuspid and the bicuspid valves open due to the pressure exerted by the simultaneous contraction of the atria. |
| 4. | Blood moves freely from atrium to the ventricle during joint diastole. |
Subtopic: Human Heart: Cardiac Cycle |
From NCERT
NEET - 2022
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Inadequate supply of oxygen to heart muscles leads to a symptom of acute chest pain. This disorder of the circulatory system is identified as:
1. Angina pectoris
2. Cardiac arrest
3. Heart failure
4. Coronary Heart Disease
Subtopic: DISORDERS OF CIRCULATORY SYSTEM |
85%
From NCERT
NEET - 2022
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Mark the correct match in the given graph of ECG.
1. P wave ® Completion of atrial systole
2. QRS wave ® completion of ventricular systole
3. QT – interval ® Completion of first heart sound
4. T wave ® End of atrial repolarisation
Subtopic: ECG & Coronary Artery Disease |
From NCERT
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