Question

Which of the following pairs, the two terms represent the same thing?

• A. Lymphocyte - leucocyte
• B. Plasma - serum
• C. Mitral valve - bicuspid valve
• D. Atrioventricular node - pacemaker

Answer 1

Answer: (C)

Mitral valve - bicuspid valve

A. Lymphocytes are a type of leucocytes. They are agranular leucocytes i.e. they do not contain granules.

B. Plasma is the fluid portion of blood. Blood plasma without clotting factors is called serum.

C. Mitral valve is also known as bicuspid valve. It is present between left atrium and left ventricle. It prevents the backflow of blood during ventricular contraction.

D. Pacemaker is the Sino atrial node (SAN) which initiates and maintains the rhythmic contraction of heart.

So, the correct answer is 'Mitral valve - bicuspid valve'.