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Body Fluids and Circulation NEET PYQs
Class XI Biology
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NCERT Based
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NEET Practice
📘 Concept Based
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17 questions in this chapter
Match the Column - I with Column -II
Column-I
Column-II
(A)P-wave
(I)Depolarisation of ventricles
(B)QRS complex
(II)Repolarisation of ventricles
(C)T-wave
(III)Coronary ischemia
(D)Reduction in the size of T-wave
(IV)Depolarisation of atria
(V)Repolarisation of atria
Select the correct option:
A (A)-(II), (B)-(III), (C)-(V), (D)-(IV) B (A)-(IV), (B)-(I), (C)-(II), (D)-(V) C (A)-(II), (B)-(I), (C)-(V), (D)-(III) D (A)-(IV), (B)-(I), (C)-(II), (D)-(III)
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Following are the stages of pathway for conduction
of an action potential through the heart:
A A-E-C-B-D B E-C-A-D-B C E-A-D-B-C D B-D-E-C-A
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Match List I with List II:
List-I
List-II
(A)P wave
(I)Heart muscles are electrically silent.
(B)QRS complex
(II)Depolarisation of ventricles
(C)T wave
(III)Depolarisation of atria.
(D)T-P gap
(IV)Repolarisation of ventricles
Choose the correct answer form the options given below:
A A-III, B-II, C-IV, D-I B A-I, B-III, C-IV, D-II C A-IV, B-II, C-I, D-III D A-II, B-III, C-I, D-IV
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The number of action potentials generated by sino-arterial node (SAN) in a healthy human is _______ per minute.
A 28 – 30 B 70 – 75 C 100 – 110 D 120 – 140
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The sinoatrial (SA) node normally generates 70–75 action potentials per minute and acts as the natural pacemaker of the human heart.
Which of the following statements is incorrect?
A Blood coagulates in response to an injury B Blood clot consists of fibrins C Fibrin is produced from fibrinogen D Fibrinogen is produced from fibrin
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Fibrin is formed from fibrinogen during blood clotting, not the other way around.
The WBC count of a person's blood sample is 8000/cu.mm. How many eosinophils and lymphocytes would be in the same blood sample approximately?
A 300–500/cu.mm and 500–700/cu.mm, respectively B 300–500/cu.mm and 1200–1500/cu.mm, respectively C 100–120/cu.mm and 160–200/cu.mm, respectively D 160–240/cu.mm and 1600–2000/cu.mm, respectively
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Eosinophils constitute about 2–3% (160–240 cells) and lymphocytes about 20–25% (1600–2000 cells) of 8000 WBCs per mm3 .
Select the incorrect statements with reference to Rh grouping.- blood and mother with Rh+ blood.- and the foetus is Rh+ .
A A and B only B C and D only C A and E only D B and C only
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Statement A is incorrect because erythroblastosis foetalis occurs when the mother is Rh- and the foetus is Rh+ . Statement E is incorrect because anti-Rh antibodies are administered immediately after the delivery of the first Rh+ child, not the second.
