Find the odd one out w.r.t. gland and secretions

Options

A. Glucocorticoids, Mineralocorticoids, Sexcorticoids
B. Nor-epinephrine, Epinephrine, Adrenaline
C. Relaxin, Oestrogen, Progestrone
D. Insulin, Glucagon, Thymosin

Answer

To solve the question of finding the odd one out with respect to glands and their secretions, we will analyze each option provided.

### Step-by-Step Solution:

1. **Identify the First Option:**
- **Glands and Secretions:** Glucocorticoids, Mineralocorticoids, and Sexocorticoids.
- **Origin:** All three hormones are secreted by the adrenal cortex.
- **Function:**
- Glucocorticoids (e.g., cortisol) are involved in stress response.
- Mineralocorticoids (e.g., aldosterone) regulate sodium and potassium balance.
- Sexocorticoids (e.g., androgens) are involved in sexual development.
- **Conclusion:** This option is consistent as all belong to the adrenal cortex.

2. **Identify the Second Option:**
- **Glands and Secretions:** Norepinephrine, Epinephrine, and Adrenaline.
- **Origin:** All three hormones are secreted by the adrenal medulla.
- **Function:** They are involved in the fight-or-flight response.
- **Conclusion:** This option is also consistent as all belong to the adrenal medulla.

3. **Identify the Third Option:**
- **Glands and Secretions:** Relaxin, Estrogen, and Progesterone.
- **Origin:** All these hormones are secreted by the placenta.
- **Function:** They are involved in pregnancy and fetal development.
- **Conclusion:** This option is consistent as all are associated with the placenta.

4. **Identify the Fourth Option:**
- **Glands and Secretions:** Insulin, Glucagon, and Thymosine.
- **Origin:**
- Insulin and Glucagon are secreted by the pancreas.
- Thymosine is secreted by the thymus gland.
- **Function:**
- Insulin regulates blood glucose levels.
- Glucagon raises blood glucose levels.
- Thymosine is involved in T-cell maturation and immune response.
- **Conclusion:** This option is inconsistent because Thymosine comes from a different gland (thymus) compared to Insulin and Glucagon (pancreas).

### Final Answer:
The odd one out is **Thymosine** from the fourth option, as it is secreted by a different gland (thymus) compared to Insulin and Glucagon, which are secreted by the pancreas.

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