Skin - "The Jack of All Trades" — Question 1

(a) Skin — Skin is the outermost covering of the body stretching all over in the form of a layer. It is the largest organ of our body.

(b) Piloerection — In Piloerection, the hair is lifted due to contraction of the erector muscle and the surface of the skin presents a somewhat contracted and wrinkled appearance.

(c) Heatstroke — Heatstroke or sunstroke is a condition in which sweat production is unable to keep pace with its evaporation in very hot winds.

(d) Perspiration — The process of sweating out as a result of thermoregulation is called perspiration.

(e) Stratum malpighi — The innermost germinative layer of epidermis is called stratum malpighi.