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Q. No.A vein, in general, can be distinguished from an artery by:
1.
Absence of valves
2.
Thin tunica media
3.
Absence of tunica externa
4.
Absence of tunica media
Subtopic: Blood: General Description & RBC |
75%
From NCERT
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Platelets are cell fragments that:
| I: | are produced from megakaryocytes in the spleen in fetal life |
| II: | can release variety of factors involved in blood coagulation |
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: General Description & RBC |
53%
From NCERT
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Both heart rate and stroke volume in a human get doubled during exercise. His cardiac output will:
1. double
2. become four times
3. become eight times
4. remain the same
1. double
2. become four times
3. become eight times
4. remain the same
Subtopic: Human Heart: Double Circulation |
81%
From NCERT
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What would be true for the white blood cell shown in the given diagram?
| 1. | They differentiate into phagocytic cells |
| 2. | They secrete histamine and heparin in the blood |
| 3. | They are responsible for providing adaptive immunity in vertebrates |
| 4. | Their number is increased in acute bacterial infections |
Subtopic: Blood: White Blood Cells |
52%
From NCERT
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An Rh –ve person, when exposed to Rh +ve blood:
| 1. | will form antibodies against the Rh antigen |
| 2. | will be unaffected |
| 3. | will form antibodies against the Rh antigen only on second exposure |
| 4. | will receive anti Rh antibodies from the donor |
Subtopic: Blood: Blood Group (A,B,O) |
81%
From NCERT
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Identify the incorrectly matched pair:
| 1. | Plasma protein | – | 6 to 8 % |
| 2. | Formed elements | – | 55% of the blood |
| 3. | Hemoglobin | – | 12 to 16 gm in 100 ml of blood |
| 4. | Platelets | – | 150000 to 350000 mm-3 |
Subtopic: Blood: General Description & RBC |
82%
From NCERT
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When anti B antibodies are present in the plasma and A antigens on the surface of RBCs of a person, her blood group can be:
| 1. | A and AB | 2. | Only A |
| 3. | Only B | 4. | O |
Subtopic: Blood: Blood Group |
88%
From NCERT
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Inter-atrial septum in the human heart is:
| 1. | a thin muscular wall | 2. | a thick muscular wall |
| 3. | a thin membranous wall | 4. | a thick membranous wall |
Subtopic: Human Heart: Gross Anatomy |
79%
From NCERT
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Which of the following would not be normal in a healthy human being?
1. A cells/blood ratio of 45%
2. A plasma albumin concentration of 4%
3. An RBC count of 5.2 million mm-3
4. A hemoglobin level of 15 gram per liter
Subtopic: Blood: General Description & RBC |
56%
From NCERT
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The second heart sound [dub] is associated with simultaneous closure of:
| 1. | Right AV and pulmonary semilunar valve |
| 2. | Left AV and aortic semilunar valve |
| 3. | Right and left AV valves |
| 4. | Right and left semilunar valves |
Subtopic: Human Heart: Cardiac Cycle |
86%
From NCERT
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