Biology - Mock Test 68

Question 671

Mammalian heart is enclosed by?

A) Perichondrium B) Periosteum C) No membrane D) Pericardium

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Question 672

Louder sound of heart beat occurs during closure of?

A) Tricuspid valve B) Auriculo-Ventricular valves C) mitral valve D) Semilunar valves

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Question 673

Life of RBC is approximately?

A) 365 days B) 120 days C) 30 days D) 7 days

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Question 674

Largest number of white blood corpuscles are?

A) Eosinophils B) Basophils C) Neutrophils D) Monocytes

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Question 675

Kidney shaped nucleus occurs in?

A) Neutrophil B) Eosinophil C) Monocyte D) Lymphocyte

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Question 676

In sphygmomanometer what does “sphygmos” mean?

A) Pressure B) Pulse C) Systole D) Blood

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Question 677

In normal man systolic and diastolic blood pressure is?

A) 100 / 80 mm Hg B) 120 / 80 mm Hg C) 140 / 100 mm Hg D) 150 / 90 Hg

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Question 678

In normal blood pressure of 120/80 mm Hg, the numerator represents?

A) Diastolic pressure B) Systolic pressure C) Pulse pressure D) Cardiac index

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Question 679

In humans, blood passes from post caval to diastolic right atrium of heart due to?

A) Stimulation of sino-auricular node B) Pressure difference between post caval and atrium C) Pushing open of venous valves D) Suction pull

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Question 680

In human beings which one regulates heart beat?

A) Purkinje fibres B) cardiac branch of vagus nerve C) SA node D) AV node

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