The figures A, B and C given below represent a kind of protective method in our body. Study the same and answer the following question:

(a) Name and define the process which occurs in figure A.

(b) What kind of blood vessel is shown in figure-A? Write its one specific structural feature.

(c) Name and define the process occurring in figure-B.

(d) What kind of blood cell is shown in the figures? Write its technical name also.

(e) Name the specific type of cell containing a 4 lobed nucleus of the category answered by you in part (4) above.

(a) The process is Diapedesis. It is defined as the squeezing of WBCs through the wall of capillaries into the tissues.

(b) Capillary wall. It is thin and semi-permeable.

(c) The process is Phagocytosis. It is the process in which WBCs engulf particle-like solid substances, especially bacteria.

(d) White Blood Cell (WBC), Leucocyte.

(e) Neutrophil.