Few sample questions for CET in PHYSIOLOGY OF CIRCULATION

1. When the right ventricle contracts, blood is pushed into
   (1) aorta
   (2) left ventricle
   (3) right auricle
   (4) pulmonary artery
2. Insufficient supply of oxygenated blood to heart is called
   (1) myocardial infarction
   (2) myocardial ischemia
   (3) heart attack
   (4) cyanosis
3. The fine, muscular fibres which prevent the collapsing of the atrio-ventricular valves are called are present in
   (1) tendons
   (2) chorda tendinnae
   (3) papillary muscles
   (4) ventricular fibrillation
4. Myocardial infarction is the
   (1) necrosis of heart muscles
   (2) insufficient supply of oxygenated blood to heart
   (3) increased heart rate
   (4) collapsing of the atrio-centricular valves
5. Heart is supplied with oxygenated blood by
   (1) pulmonary artery
   (2) pulmonary vein
   (3) carotid artery
   (4) coronary artery
6. Match the heart disorders listed under column-I with their meanings given under column-II; choose the answer with the correct combination of alphabets of the two columns.
   Column I Column II
   A. Stenosis p. A decrease in heart rate
   B. Bradycardia q. Blue baby disease
   C. Cyanosis r. Calcification or hardening of valves
   D. Tachycardia s. Necrosis of cardiac muscles
   t. An increase in heart rate
   (1) A=q, B=p, C=s, D=t
   (2) A=r, B=t, C=q, D=p
   (3) A=r, B=p, C=q, D=t
   (4) A=r, B=t, C=p, D=q
7. The mitral valve is present between
   (1) right auricle and right ventricle
   (2) left auricle and left ventricle
   (3) right auricle and left ventricle
   (4) left auricle and right ventricle
8. The heart is enclosed in a transparent membrane called
   (1) heart membrane
   (2) pericardium
   (3) mucus membrane
   (4) peritoneum
9. The pattern of contraction and relaxation of heart is referred to as
   (1) blood pressure
   (2) arterial flow
   (3) blood flow
   (4) cardiac cycle
10. The typical `Lub-dub’ sounds heard in the heart beat of a healthy person are due to
    (1) closing of the tricuspid & bicuspid valves
    (2) blood flow through arteries
    (3) closing of the tricuspid & bicuspid valves followed by the closing of semi-lunar valves
    (4) closing of the semi-lunar valves
11. Blood pressure is defined as
    (1) the force with which blood pushes against the wall of the blood vessels
    (2) the force with which blood is pushed to the legs
    (3) the force with which blood comes out of the ventricles
    (4) the force with which blood comes out of the ventricle
12. In a cardiac out put of 5250 ml. per minute, with 75 heart beats per minute, the stroke volume is
    (1) 55ml
    (2) 60ml
    (3) 70ml
    (4) 80ml
13. Hardening of arteries due to deposition of cholesterol is called
    (1) thrombosis
    (2) atherosclerosis
    (3) rhinitis
    (4) stenosis
14. How many times a red blood corpuscle will have to pass through the heart in its journey from hepatic artery to the aorta ?
    (1) two times
    (2) only once
    (3) several times
    (4) four times
15. How many double circulations are normally completed by the human heart, in one minute?
    (1) 8
    (2) 16
    (3) 72
    (4) 36
16. Tetralogy of Fallot are attributes of
    (1) infarction
    (2) cyanosis
    (3) cardiomegaly
    (4) coronary thrombosis
17. The animal which has the smallest RBC is
    (1) Salamander (Amphiuma)
    (2) Musk deer (Tragupus javanicus)
    (3) Camel
    (4) Chameleon
18. Which statement is false ?
    (1) veins are typically larger in diameter than arteries
    (2) the walls of arteries are elastic, enabling them to stretch and shrink with changes in blood pressure
    (3) the blood pressure in veins is normally too low for blood to return to the heart without the action of skeletal muscles
    (4) because of their small size, capillaries contain blood that is moving more quickly than in other parts of the circulatory system
19. Which statement about mammalian heart function is false ?
    (1) Contraction of the heart originates at the sinoatrial node in the right atrium
    (2) the atrioventricular node propagates the contraction to the ventricles
    (3) during atrial contraction, venous blood flows into the right atrium
    (4) the pulmonary artery contains oxygenated blood
20. During venricular systole
    (1) oxygenated blood is pumped into the aorta and deoxygenated blood into the pulmonary vein
    (2) oxygenated blood is pumped into the pulmonary artery and deoxygenated blood is pumped into the artery
    (3) oxygenated blood is pumped into the aorta and deoxygenated blood is pumped into the pulmonary artery
    (4) oxygenated blood is pumped into the pulmonary vein and deoxygenated blood is pumped into the pulmonary artery
21. In an undamaged blood vessel, conversion of prothrombin to thrombin is prevented by
    (1) fibrinogen
    (2) Ca++
    (3) factor VIII
    (4) heparin
22. In a cardiac cycle, blood pressure is at a maximum when the
    (1) atria are contracting during systole
    (2) ventricles are relaxing during systole
    (3) ventricles are relaxing during diastole
    (4) ventricle are contracting during systole