In cyanosis colouration of body parts appears `:-`

Options

A. Bluish
B. Yellowish
C. Reddish
D. Brownish

Answer

**Step-by-Step Solution:**

1. **Understanding Cyanosis**: Cyanosis is a condition characterized by a bluish discoloration of the skin and mucous membranes. It occurs when there is a significant decrease in the amount of oxygen in the blood.

2. **Oxygen Levels in Blood**: In normal conditions, blood contains a high level of oxygenated hemoglobin, which gives blood its bright red color. When oxygen levels drop, the amount of deoxygenated hemoglobin increases.

3. **Effect on Skin Color**: The increase in deoxygenated hemoglobin causes the skin and mucous membranes to take on a bluish or purplish hue. This is because deoxygenated hemoglobin has a darker color compared to oxygenated hemoglobin.

4. **Analyzing the Options**: The question provides four options regarding the coloration of body parts during cyanosis:
- A) Bluish
- B) Yellowish
- C) Reddish
- D) Brownish

5. **Selecting the Correct Answer**: Based on the understanding that cyanosis is associated with an increase in deoxygenated hemoglobin leading to a bluish appearance of the skin, the correct answer is option A) Bluish.

**Final Answer**: The coloration of body parts in cyanosis appears bluish.

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