Clinical Note, Skin Colour

Question 1

Dermal Circulation - blood Flow

Answer 1

• Haemoglobin that is bound to oxygen is bright red
• Dilated blood vessels causes skin to look red as blood flows closer to the surface of the skin.
• Constricted vessels cause skin to become pale as blood flow is not as close to the skin’s surface.
• Reduced supply of oxygen causes skin to become bluish -cyanosis