Match list-I with II and select the correct option:-
(a) Adrenalin (1) Myxoedema
(b) Hyperparathyroidism (2) heart beat
(c) Oxytocin (3) Salt-water balance
(d) Hypothyroidism (4) Child birth
(e) Aldosterone (5) Demineralization

Options

A. a-1 b-5 c-4 d-2 e-3
B. a-2 b-5 c-4 d-1 e-3
C. a-2 b-3 c-4 d-1 e-5
D. a-4 b-3 c-2 d-1 e-5

Answer

To solve the matching question, we will analyze each hormone in List-I and match it with the appropriate condition or function in List-II.

### Step-by-Step Solution:

1. **Identify Adrenalin (A)**:
- Adrenalin is known as the stress hormone. Its primary function is to increase the heart rate and prepare the body for a 'fight or flight' response.
- **Match**: Adrenalin (A) matches with heart beat (2).

2. **Identify Hyperparathyroidism (B)**:
- Hyperparathyroidism refers to an excess of parathyroid hormone, which leads to increased calcium levels in the blood. This condition promotes bone demineralization.
- **Match**: Hyperparathyroidism (B) matches with demineralization (5).

3. **Identify Oxytocin (C)**:
- Oxytocin is a hormone that plays a crucial role in childbirth by causing uterine contractions. It is also involved in lactation.
- **Match**: Oxytocin (C) matches with childbirth (4).

4. **Identify Hypothyroidism (D)**:
- Hypothyroidism is characterized by low levels of thyroid hormones, which can lead to a condition known as myxoedema.
- **Match**: Hypothyroidism (D) matches with myxoedema (1).

5. **Identify Aldosterone (E)**:
- Aldosterone is a hormone that helps regulate salt and water balance in the body.
- **Match**: Aldosterone (E) matches with salt-water balance (3).

### Final Matches:
- A (Adrenalin) → 2 (heart beat)
- B (Hyperparathyroidism) → 5 (demineralization)
- C (Oxytocin) → 4 (childbirth)
- D (Hypothyroidism) → 1 (myxoedema)
- E (Aldosterone) → 3 (salt-water balance)

### Correct Option:
The correct option that matches all the pairs is **Option B**.