Find the incorrect match w.r.t. structure / cell and its hormone concerned .

Options

A. `beta` - Cells of pancreas- Insulin
B. Zone fasciculate of adrenal cortex- Cortisol
C. Follicular cells of thyroid gland - Thyrocalcitonin
D. Juxta- glomerular cells of kidney - Erythropoietin

Answer

To find the incorrect match with respect to structure/cell and its hormone concerned, we will analyze each option provided.

### Step-by-Step Solution:

1. **Option 1: Beta cells of pancreas and Insulin**
- The beta cells of the pancreas are responsible for producing insulin.
- Insulin plays a crucial role in lowering blood glucose levels.
- **Conclusion:** This match is correct.

2. **Option 2: Zona fasciculata of adrenal cortex and Cortisol**
- The adrenal cortex has three zones: zona glomerulosa, zona fasciculata, and zona reticularis.
- The zona fasciculata specifically secretes glucocorticoids, with cortisol being the primary hormone produced.
- **Conclusion:** This match is correct.

3. **Option 3: Follicular cells of thyroid gland and Thyrocalcitonin**
- Follicular cells of the thyroid gland primarily produce thyroid hormones, namely thyroxine (T4) and triiodothyronine (T3).
- Thyrocalcitonin (also known as calcitonin) is produced by parafollicular cells (C cells) of the thyroid gland, not the follicular cells.
- **Conclusion:** This match is incorrect.

4. **Option 4: Juxtaglomerular cells of kidney and Erythropoietin**
- Juxtaglomerular (JG) cells in the kidney are responsible for the secretion of erythropoietin (EPO).
- Erythropoietin is crucial for the production of red blood cells (RBCs).
- **Conclusion:** This match is correct.

### Final Answer:
The incorrect match is **Option 3: Follicular cells of thyroid gland and Thyrocalcitonin**.

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