Class XI · Biology practice
Body Fluids and Circulation PYQs Check your understanding, bookmark questions and revisit your mistakes.
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17 questions in this collection · Page 2 of 2
Body Fluids And Circulation
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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Body Fluids And Circulation
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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Body Fluids And Circulation
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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Body Fluids And Circulation
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.
Body Fluids And Circulation
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.
Body Fluids And Circulation
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 .
Body Fluids And Circulation
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.
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