Human Circulatory System
Tests knowledge of heart anatomy, blood vessels, blood groups, circulation patterns, and cardiac physiology
Questions
The blood in ______________ arteries will have the lowest concentration of oxygen.
- aorta
- pulmonary
- renal
- hepatic
Which of the following statements is true about heart?
- The right auricle has thicker wall than left ventricle.
- Left auricle has thicker wall than left ventricle.
- Left ventricle has thicker wall than right ventricle.
- Right ventricle has thicker wall than left ventricle.
A person undergoing myocardial infarction have defects in
- pulmonary veins
- coronary artery
- aorta
- cardiac veins
A person with blood group A requires blood transfusion. Which of the following blood groups can be used for this?
(i) A
(ii) B
(iii) AB
(iv) O
- (i) and (ii)
- (i) and (iii)
- (i) and (iv)
- (iii) and (iv)
The correct sequence of animals that are arranged in increasing rate of heart beat is
- Sparrow - Cat - Horse - Whale
- Whale - Horse - Cat - Sparrow
- Whale - Sparrow - Cat - Horse
- Whale - Sparrow - Horse - Cat
Which of the following features will not be observed in a gross specimen of heart?
- Muscular projections on the wall of ventricles
- Three pocket shaped valves at the origin of the aorta
- Mitral valve, an aperture between right auricle and ventricle
- Three pocket shaped valves at the origin of pulmonary artery
A patient suffering from some heart trouble was given a battery operated pacemaker. Which of the following structures would be affected in that patient?
- Purkinje fibres
- Sinu-atrial node
- Abio-ventricular node
- Bundle of HIS
A vessel has thin muscular walls and wider lumen with three pocket shaped valves. Which of the following is true for the vessel?
- It carries oxygenated blood away from the heart.
- It carries deoxygenated blood away from the heart.
- It carries deoxygenated blood towards the heart.
- It carries oxygenated blood towards the heart.
A cross section of vessel shows single layer of squamous epithelial cells and not muscles. Which vessel is it?
- Artery
- Vein
- Venule
- Capillary
Which of the following is measured by sphygmomanometer?
- Pressure exerted by blood on arterial wall
- Pressure exerted by blood on ventricular wall
- Pressure exerted by blood on capillary wall
- Pressure exerted by blood on cardiac wall
Why is blood circulation in human body called double circulation?
- Because it has both oxygenated and deoxygenated blood in it.
- Because blood flows through two different vessels, i.e. arteries and veins.
- Because blood flows twice in the heart before it completes one circulation.
- Because blood flows through heart and lungs in one circulation.
Which of the following statements is not true?
- Blood vessels entering liver are hepatic portal vein and hepatic artery.
- Hepatic portal veins arise from hepatic vein.
- Hepatic portal vein starts with capillaries and also ends in capillaries.
- Hepatic veins carry deoxygenated blood from liver to inferior vena cava.
While using a stethoscope, a physician hears a sound of ‘LUBB’. Which activity is responsible for producing this sound?
- Opening of mitral and tricuspid valves
- Closing of mitral and tricuspid valves
- Closing of aortic semilunar valves
- Opening of pulmonary semilunar valves