Biology - Mock Test 66

Question 651

Pulmonary trunk and aorta are attached by?

A) Chordae tendinae B) Ligamentum arteriosus C) Coronary sulcus D) Pericardium

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Question 652

Pulmonary artery differs from pulmonary vein in having?

A) Thick wall B) Thin wall C) Valves D) Both B and C

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Question 653

Pericardial space in cockroach is regularly altered by muscles?

A) Ciliary B) Alary C) Circular D) Longitudinal

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Question 654

Pericardial fluid is secreted by?

A) Myocardium B) Perietal peritoneum C) Visceral peritoneum D) None of the above

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Question 655

Pacemaker of heart is?

A) AV node B) SA node C) Bundle of His D) Purkinje fibres

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Question 656

Pace maker is situated in heart?

A) In the wall of right atrium B) On interauricular septum C) On interventricular septum D) In the wall of left atrium

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Question 657

Pace maker is?

A) Instrument for measuring heart beats B) Instrument for measuring pulse rate C) Auriculo-ventricular node that provides impulse for heart beat D) Sinu-auricular node that provides impulse for heart beat.

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Question 658

Oxygenated blood occurs in?

A) Pulmonary arteries B) Right ventricle C) Right atrium D) Pulmonary veins

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Question 659

Oxygenated blood from lungs enters heart through?

A) Pulmonary vein B) Pulmonary artery C) Coronary system D) Coronary vein

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Question 660

Oxygen carrier in human blood is?

A) Iron B) Methaemoglobin C) Haemoglobin D) Haemocyanin

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