Question

Cyanosis is

• A. Lack of oxygen in body fluids.
• B. Difficult or heavy breathing.
• C. Excess of carbon dixode in the body fluids.
• D. Skin turning blue due to excessive amount of deoxygenated haemoglobin in the skin blood vessels.

Answer 1

Answer: (D)

Skin turning blue due to excessive amount of deoxygenated haemoglobin in the skin blood vessels.

Cyanosis is the appearance of a blue or purple colouration of the skin or mucous membranes due to the tissues near the skin surface having low oxygen saturation. Levels of 2.0 g/dL of deoxyhaemoglobin may produce cyanosis.

So, the correct answer is 'Skin turning blue due to excessive amount of deoxygenated haemoglobin in the skin blood vessels.'