Body Fluids and Circulation | MCQs | FACT/DEFINITION TYPE QUESTIONS | NEET(Que 1-16 of 100)

 

1. 

 FACT/DEFINITION TYPE QUESTION

Lymph is modified blood that contains 

(a) RBC and WBC 

(b) RBC, WBC and protein

 (c) WBC and all protein 

(d) all contents of blood except RBC and certain protein

... Answer is d)
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2.

Which one engulfs pathogens rapidly?

 (a) Acidophils (b) Monocytes (c) Basophils (d) Neutrophils

... Answer is d)
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3.

What is true about leucocytes ? 

(a) Their sudden fall in number is indication of blood cancer (b) These are produced in thymus (c) These are enucleated (d) These can squeeze out through the capillary walls

... Answer is d)
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4.

__________ plays an important role in blood clotting.

 (a) Sodium (b) Chlorine (c) Calcium (d) Potassium

... Answer is c)
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5.

Which of the following cations is required for the conversion of prothrombin into active thrombin by thromboplastin? 

(a) Cu2+ (b) Fe3+ (c) Fe2+ (d) Ca2+

... Answer is d)
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6.

Fish has ___(i)____ and ___(ii)___ circulatory system.

(a) (i)- open, (ii)- single 

(b) (i)- open, (ii)- double 

(c) (i)- closed, (ii)- single

 (d) (i)- closed, (ii)- double

... Answer is C)
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7.

Open type blood vascular system is found in

 (a) earthworm (b) lizard (c) cockroach (d) toad

... Answer is c)
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8.

Which of the following set of animals has an incomplete double circulation system ? 

(a) Frog and crocodile (b) Shark and whale (c) Lizard and pigeon (d) Toad and lizard

... Answer is d)
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9.

Read the following statements and select the correct ones.

(i) Nodal tissue is specialised cardiac musculature in human heart which has the ability to generate action potential.
(ii) Position of SA Node - right corner of right atrium
(iii) Position of AV Node - right corner of ventricle
(iv) AV bundle continues from AV Node
(v) Purkinje fibres are modified cardiac muscle fibres that originate from the atrioventricular node and spread into the two ventricles.

A

(i) and (ii)

B

(i), (ii) and (iv)

C

(ii), (iv) and (v)

D

All of these

... Answer is D)
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10.

Nodal tissue/musculature in human heart has

 (a) the ability to generate action potential due to any external stimuli.

(b) two patches, one in atrium and other in ventricle.

 (c) purkinje fibres throughout the ventricular musculature.

 (d) atrioventricular node, also called pacemaker

... Answer is C)
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11.

Contraction of the ventricle in the heart begins by the command from (a) Purkinje fibres (b) AV node (c) chordae tendinae (d) SA node

... Answer is D)
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12.

Sinu-atrial node in human heart is embedded in the wall of 

(a) sinus-venosus (b) interatrial septum (c) right atrium (d) atrioventricular septum

... Answer is C)
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13.

Which term does not apply to human heart? (a) Pacemaker (b) Four chambered (c) Mitral valve (d) Neurogenic

... Answer is D)
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14. 

The heart sound ‘dupp’ is produced when (a) tricuspid valve is opened. (b) mitral valve is opened. (c) mitral valve is closed. (d) semi-lunar valves at the base of aorta get closed.

... Answer is D)
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15. 

Closure of which of the following valves makes louder sound of heart beat? (a) Mitral valve (b) Seminular valve (c) Auriculo-ventricular valve (d) Tricuspid valve

... Answer is C)
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16. 

Pulmonary artery arises from (a) right atrium (b) left atrium (c) right ventricle (d) left ventricle

... Answer is C)
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