Circulation — Biology MCQs (Class 11)
Free chapter-wise Biology MCQs with answers for MDCAT, FSc and entry tests.
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#1 Man's heart is enclosed in a tough membrane called
A) Cardiac membrane
B) Pericardium
C) Heart membrane
D) Endothelium
#2 From the head and upper part of the body deoxygenated blood is collected by
A) Superior vena cava
B) Pulmonary artery
C) Inferior vena cava
D) Pulmonary vein
#3 Right atrio-ventricular aperture is guarded by
A) Bicuspid valve
B) Tricuspid valve
C) Tetracuspid valve
D) Semilunar valves
#4 Arteries carry oxygenated blood with the exception of
A) Coronary artery
B) Hepatic artery
C) Renal artery
D) Pulmonary artery
#5 The human heart beat is
A) Neurogenic
B) Digenic
C) Cardiogenic
D) Myogenic
#6 Coronary arteries supply oxygen and food to the muscles of
A) Heart
B) Lungs
C) Stomach
D) Kidneys
#7 The heart beat is initiated in the
A) Bundle os His
B) Medulla oblongata
C) Sino-artrial node
D) AVN
#8 Which blood vessels chnage their resistance to blood flow to regulate distribution of blood to origins
A) Arteries
B) Artrioles
C) Veins
D) Capillaries
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