Test 11 Circulatory system

The valve between the left ventricle and the blood vessel leaving the left ventricle is the:

• Mitral valve.

• Tricuspid valve.

• Pulmonary valve.

• Aortic valve.

The following are the heart valves: 1 = aortic valve; 2 = mitral valve; 3 = pulmonary valve; 4 = tricuspid valve. Arrange them in the order in which an erythrocyte would pass through them after returning to the heart from the left arm:

• 3-4-2-1.

• 2-3-1-4.

• 1-2-3-4.

• 3-1-2-4.

Blood returning to the heart from the body organs enters the:

• left atrium through the aorta.

• right atrium through the vena cava.

• left ventricle by the pulmonary artery.

• right ventricle by the pulmonary vein.

Which of the following blood vessels carries oxygen-rich blood?

• Coronary sinus

• Inferior vena cava

• Pulmonary vein

• Pulmonary artery

Which of the following statements concerning blood vessels is exact?

• Arteries carry blood away from the heart.

• Arteries contain oxygenated blood except pulmonary arteries.

• Veins usually run deep into the body.

• Veins have large lumen.

The valves (in veins) are assisted by the skeletal muscles surrounding the veins.

• True.

• False.

Which of the following does not aid the return of venous blood to the heart from the lower extremities?

• Valves in veins.

• The muscle "pump".

• The respiratory "pump".

• Gravity.

Superior veina cava brings blood from organ below the diaphragm.

• True.

• False.

Answer explanation

Inferior vena cava IVC brings blood from the lower part of the body (lower than the diaphragm) and SVC from the upper part of the body.

A is the

B is the