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Q. No.Read the given statements and select the correct option
A:
White blood cells are enucleated and are relatively lesser in number which averages 6000-8000 mm-3 of blood
B:
Human heart is protected by a three walled membranous bag, pericardium
1. Both statements A and B are correct
2. Both statements A and B are incorrect
3. Only statement A is correct
4. Only statement B is correct
Subtopic: Blood: General Description & RBC |
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From NCERT
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Which of the following cells of areolar connective tissue are also present in blood?
1. Fibroblasts
2. Eosinophils
3. Macrophages
4. Mast cells
1. Fibroblasts
2. Eosinophils
3. Macrophages
4. Mast cells
Subtopic: Blood: White Blood Cells |
From NCERT
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How many of the given statements are correct:
| I: | Fishes have a 2-chambered heart with an atrium and a ventricle. |
| II: | Amphibians and the reptiles (except crocodiles) have a 3-chambered heart with two atria and a single ventricle. |
| III: | Crocodiles, birds and mammals possess a 4-chambered heart with two atria and two ventricles. |
| IV: | The only vertebrates where the heart pumps out deoxygenated blood are fishes. |
| 1. | 1 | 2. | 2 |
| 3. | 3 | 4. | 4 |
Subtopic: Circulatory Pathways |
From NCERT
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Consider the two statements:
| Assertion (A): | Adrenal medullary hormones can increase the cardiac output. |
| Reason (R): | Adrenal medullary hormones are steroids with prominent effects on osmoregulation and glucose homeostasis in human body. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A). |
| 2. | (A) is True but (R) is False. |
| 3. | Both (A) and (R) are True but (R) does not correctly explain (A). |
| 4. | (A) is False but (R) is True. |
Subtopic: Regulation of Cardiac Activity |
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From NCERT
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Consider the two statements:
| Assertion (A): | Heart failure is sometimes called congestive heart failure. |
| Reason (R): | Heart failure means the state of heart when it is not pumping blood effectively enough to meet the needs of the body. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A). |
| 2. | (A) is True but (R) is False. |
| 3. | Both (A) and (R) are True but (R) does not correctly explain (A). |
| 4. | (A) is False but (R) is True. |
Subtopic: DISORDERS OF CIRCULATORY SYSTEM |
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The principal solute, dissolved in the plasma portion of the blood as well as the extracellular fluid (ECF), amongst the following, will be:
1. haemoglobin
2. Na+
3. K+
4. albumin
1. haemoglobin
2. Na+
3. K+
4. albumin
Subtopic: Lymph | Blood: General Description & RBC |
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From NCERT
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The volume of blood pumped out by each ventricle per minute is called as the:
1. stroke volume
2. ejection fraction
3. cardiac output
4. end diastolic volume
1. stroke volume
2. ejection fraction
3. cardiac output
4. end diastolic volume
Subtopic: Human Heart: Cardiac Cycle |
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From NCERT
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Identify the correctly matched pairs:
1. Only I and II are correct
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
| Layer in the wall of artery/vein | Made up of | |
| I: | Tunica intima | Squamous epithelium |
| II: | Tunica media | Skeletal muscle/elastic fibres |
| III: | Tunica externa | Fibrous connective tissue |
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
Subtopic: Human Heart: Double Circulation |
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From NCERT
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Consider the given two statements:
| Statement I: | ABO grouping is based on the presence or absence of three surface antigens on the RBCs namely A, B and O. |
| Statement II: | Rh grouping is based on the presence or absence of the type of antibody present in the plasma. |
| 1. | Statement I is correct; Statement II is correct |
| 2. | Statement I is incorrect; Statement II is incorrect |
| 3. | Statement I is incorrect; Statement II is correct |
| 4. | Statement I is correct; Statement II is incorrect |
Subtopic: Blood: Blood Group (A,B,O) |
From NCERT
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Consider the given two statements:
| Assertion (A): | SA node is called the pacemaker of the human heart. |
| Reason (R): | SA node is auto-excitable. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A). |
| 2. | Both (A) and (R) are True but (R) does not correctly explain (A). |
| 3. | (A) is True; (R) is False. |
| 4. | Both (A) and (R) are False. |
Subtopic: Human Heart: Gross Anatomy |
From NCERT
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