Question

a.Label the three layers of the skin.
b.Which receptors are present in the skin?
c.Name three diseases that affect the skin.
d.What determines the colour of the skin? [5 Marks]

Answer 1

Solution:

a.
1. Epidermis​

2. Dermis​
3. Hypodermis​
[0.5 Marks for each labelling]

b. Skin has receptors such as:

• Tactile receptors for touch
• Pacinian corpuscles for pressure
• Nociceptors for temperature

[0.5 Marks for each receptor]

c. Diseases that can affect the skin:

• Leucoderma
• Fungal diseases
• Pellagra
[0.5 Marks for each disease]

d. The presence of melanin pigment determines the colour of the skin [0.5 Marks]

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