Tricuspid valve is the valve in the heart between the right atrium and right ventricle. The valve opens to allow blood to flow from atrium into the ventricle. Thus if tricuspid valve is partially non-functional, then the flow of blood into the pulmonary artery will be reduced.

Correct Option: D

Tricuspid valve is the valve in the heart between the right atrium and right ventricle. The valve opens to allow blood to flow from atrium into the ventricle. Thus if tricuspid valve is partially non-functional, then the flow of blood into the pulmonary artery will be reduced.

Arteries are the vessels which break up into capillaries which reunite to form one visceral organ.

Correct Option: B

Arteries are the vessels which break up into capillaries which reunite to form one visceral organ.

‘Bundle of His’ are a typical cardiac muscle fibres, connecting the atria with ventricle.

Correct Option: B

‘Bundle of His’ are a typical cardiac muscle fibres, connecting the atria with ventricle.

The P-wave represents the electrical excitation (or depolarisation) of the atria, which leads to the contraction of both the atria. The QRS complex represents the depolarisation of the ventricles, which initiates the ventricular contraction. The contraction starts shortly after Q and marks the beginning of the systole.

Correct Option: D

The P-wave represents the electrical excitation (or depolarisation) of the atria, which leads to the contraction of both the atria. The QRS complex represents the depolarisation of the ventricles, which initiates the ventricular contraction. The contraction starts shortly after Q and marks the beginning of the systole.