Increase in bleeding time and delay in blood coagulation is due to the deficiency of which hormone?

Options

A. thyroxine
B. Adrenaline
C. Noradrenaline
D. parathormone

Answer

To determine which hormone deficiency leads to an increase in bleeding time and a delay in blood coagulation, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks about the relationship between hormone deficiency and its effect on bleeding time and blood coagulation.

2. **Identifying Relevant Hormones**: The options provided are:
- A. Thyroxin
- B. Adrenal
- C. Non-Adrenal
- D. Parathormone

3. **Function of Parathormone**: Parathormone, also known as parathyroid hormone (PTH), is secreted by the parathyroid glands. Its primary function is to regulate calcium levels in the blood.

4. **Calcium's Role in Coagulation**: Calcium ions are crucial for the blood coagulation process. A deficiency in calcium can lead to prolonged bleeding and delayed coagulation.

5. **Effects of Parathormone Deficiency**: When there is a deficiency of parathormone, the calcium levels in the blood decrease. This decrease in calcium levels can lead to an increase in bleeding time and a delay in the coagulation process.

6. **Conclusion**: Based on the above reasoning, the hormone whose deficiency leads to increased bleeding time and delayed blood coagulation is parathormone.

### Final Answer:
The correct answer is **D. Parathormone**.

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