The organ A which is located inside the skull of our body is protected by a bony box B and it is surrounded by three membranes C. the space between the membranes is filled with a liquid D which protects the organ A from mechanical shocks. The organ A in combination with another organ E makes up the central nervous system.
(a) What is organ A?
(b) What are (i) B (ii) C, and (iii) D ?
(C) Name the organ E.
(d) While walking barefooted, it we happen to step on a sharp piece of stone, we immediately lift our foot up. which of the two organs, A or E, is directly involves in this action?
(e) If we step out from a darkened room into bright sunshine, we close our eyes for a moment. Which of the two organs, A or E, is directly involves in this action?

Answer

(a) Brain (b) (i) Cranium (Skull) (ii) Meninges (iii) Cerebro spinal fluid (c) Spinal cord (d) Organ E (Spinal cord) (e) Organ A (Brain)