Question

Q.18 Give technical terms for the following:

(i) The protective covering of the heart.

(ii) The fluid portion of the blood

Answer 1

(i) Pericardium

1. The heart is surrounded by a fluid-fluid sac called the pericardium.
2. The pericardium is further divided into two layers; fibrous pericardium and serous pericardium.

(ii) Plasma

1. Plasma is the fluid portion of blood.
2. The plasma of blood is made of water, protein, and salts.