Body Fluids and Circulation, Quiz 10

If due to some injury the chordae tendinae of the bicuspid valve of the human heart is partially non-functional, what would be the immediate effect?

• (a) Heart beat would become irregular

• (b) Blood will tend to move back into the right atrium.

• (c) The flow of blood into the aorta will be slowed down.

• (d) The flow of blood into pulmonary artery will be reduced.

During each cardiac cycle two prominent sounds are produced which can be easily heard through a stethoscope. If during check up the heart sounds are not clear it indicates

• (a) Cardiac arrest

• (b) Heart failure

• (c) Leaky valves

• (d) Atherosclerosis

Which one of the following animals has two separate circulatory pathways?

• (a) Whale

• (b) Shark

• (c) Frog

• (d) Lizard

Doctors use stethoscope to hear the sounds produced during each cardiac cycle. The second sound in heard when

• (a) AV node receives signal from SA node

• (b) AV valves open up

• (c) Ventricular walls vibrate due to gushing in of blood from atria

• (d) Semilunar valves close down after the blood flows into vessels from ventricles

If liver is removed, the component that increases in blood

• (a) Protein

• (b) Urea

• (c) Uric acid

• (d) Ammonia

Blood vessel carrying least CO₂ is

• (a) Pulmonary vein

• (b) Pulmonary artery

• (c) Vena cava

• (d) Hepatic vein

On the ECG recording the maximum ventricular pressure would be

• (a) At QRS complex

• (b) At T wave

• (c) Between QRS complex and T wave

• (d) Between P and QRS complex

What produces systolic blood pressure?

• (a) Contraction of the right atrium

• (b) Contraction of the right ventricle

• (c) Contraction of the left atrium

• (d) Contraction of the left ventricle

The hepatic portal vein drains blood to liver from :

• (a) Stomach

• (b) Kidneys

• (c) Intestine

• (d) Heart

As blood travels from arteries to veins,

• (a) pressure builds.

• (b) pressure drops.

• (c) flow becomes turbulent.

• (d) diameter of the blood vessels gets progressively smaller