Today I am going to share with you the previous year's question on the HUMAN CIRCULATORY SYSTEM. Here is the question bank so you can download it 

HUMAN CIRCULATORY SYSTEM
HUMAN CIRCULATORY SYSTEM


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Human Circulatory System 

1. Cardiac output is determined by 

 (1) Blood flow 

 (2) Heart rate 

 (3) Stroke volume 

 (4) Both (2) and (3) 


 2. In a standard ECG which one of the following alphabets is the correct representation of the respective activity of the human heart? 

(1) S - the start of systole 

 (2) T - end of diastole 

 (3) P - depolarisation of the atria 

 (4) R - repolarisation of ventricles 

 3. Which of the following statements is correct regarding veins? 

(1) Carry blood from an organ toward the heart 

 (2) All veins carry oxygenated blood with a single exception 

 (3) Carry blood from the heart towards the organ 

 (4) All of these 


4. The greatest amount of oxygen will be lost from the blood while it passes through: - 

(1) Capillaries around the alveoli 

 (2) Large arteries 

 (3) Large Veins 

 (4) The capillaries in the body tissues 


 5. Tick mark the correct statements? 

(1) Weak condition of the heart leads to bradycardia 

 (2) Vagal secretion leads to tachycardia 

 (3) Strong condition of heart leads to bradycardia 

 (4) Excessive loss of blood leads to a decrease heart beat 


 6. Neural signals through parasympathetic nervous system can: - 

(a) Increase the heartbeat rate. 

 (b) Decrease the heartbeat rate. 

 (c) Increase the strength of ventricular contraction. 

 (d) Decrease the speed of conduction of action potential. 

(e) Increase cardiac output. 

 (f) Decrease cardiac output. 

 Option: - 

(1) b, c & e 

 (2) a, d & f 

 (3) b, d & f 

 (4) a, c & e 7. 

Which is the chemical that decreased heartbeat rate thereby decreasing the cardiac output? 

(1) Thyroxin 

 (2) Noradrenaline 

 (3) Acetylcholine 

 (4) Adrenaline 


 8. ECG depicts the depolarisation and repolarisation processes during the cardiac cycle. 

In the ECG of a normal healthy individual one of the following waves is not represented. 

 (1) Depolarisation of atria 

 (2) Repolarisation of atria 

 (3) Depolarisation of ventricles 

 (4) Repolarisation of ventricles 


 9. Which of the following events takes place in the cardiac cycle after the end of the first heart sound and before the onset of the second heart sound? 

 (1) atrial systole and ventricular systole 

 (2) atrial systole and ventricular diastole 

 (3) atrial diastole and ventricular systole 

 (4) joint diastole 

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