Biology
Define
(a) Skin
(b) Piloerection
(c) Heatstroke
(d) Perspiration
(e) Stratum malpighi
Skin
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Answer
(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.
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