- 1(current)
Q. No.Given below are four statements (a-d) regarding human blood circulatory system:
| (a) | Arteries are thick-walled and have narrow lumen as compared to veins. |
| (b) | Angina is acute chest pain when the blood circulation to the brain is reduced. |
| (c) | Persons with blood group AB can donate blood to any person with any blood group under the ABO system. |
| (d) | Calcium ions play a very important role in blood clotting. |
Which two of the above statements are correct?
| 1. (a) and (b) | 2. (b) and (c) |
| 3. (c) and (d) | 4. (a) and (d) |
Subtopic: Â Blood: Blood Clotting |Â Human Heart: Double Circulation |
 86%
From NCERT
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NEET 2026 - Target Batch - Vital
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NEET 2026 - Target Batch - Vital
Which enzyme is responsible for the conversion of inactive fibrinogens to fibrins?
| 1. | Epinephrine | 2. | Thrombokinase |
| 3. | Thrombin | 4. | Renin |
Subtopic: Â Blood: Blood Clotting |
 86%
From NCERT
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NEET 2026 - Target Batch - Vital
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NEET 2026 - Target Batch - Vital
All the following statements regarding coagulation of blood are correct except:
1. Prothrombinase catalyzes the breakdown of prothrombin to thrombin.
2. Thrombin catalyzes the conversion of fibrinogen to fibrin.
3. Antithrombin inactivates thrombin.
4. Heparin causes fibrinolysis.
Subtopic: Â Blood: Blood Clotting |
To view explanation, please take trial in the course.
NEET 2026 - Target Batch - Vital
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- 1(current)
Q. No.
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