Structure and function of parts of the mammalian skin

The following diagram represents a section of the mammalian skin.

  1. Name the part labelled M. (1 mark)
  2. Explain the roles played by the parts N and L in thermoregulation during hot weather conditions. (6 marks)
  3. Explain why aquatic animals have a thicker adipose tissue. (1 mark)



Suggested resposponses


Structure and function of the mammalian skin

(a) Sebaceous gland;

(b) Roles of parts in thermoregulation during hot weather

N - Sweat glands; secrete sweat to the skin surface; the water in the sweat absorbs heat from the skin; creating a cooling effect;

L - Erector...