Read the statements given below and select the correct option

Options

A. Atrial naturetic factor (ANF) is responsible for increasing the blood pressure .
B. Gastrin stimulates the secretion of HCl and trypsinogen.
C. Erythropoietin is produced by Juxta - Glomerular cells of the kidney .
D. CCK acts only on the gall bladder.

Answer

To solve the question, we need to evaluate each statement provided and determine which one is correct. Let's break it down step by step.

### Step 1: Analyze the first statement
- **Statement**: "Arterial and uretic factor is responsible for increasing the blood pressure."
- **Analysis**: This statement is incorrect. The arterial natriuretic factor (ANF) is produced by the heart's atrium and is actually responsible for decreasing blood pressure by promoting sodium excretion and vasodilation.

### Step 2: Analyze the second statement
- **Statement**: "Gastrin stimulates the secretion of HCL and trypsinogen."
- **Analysis**: This statement is also incorrect. While gastrin does stimulate the secretion of hydrochloric acid (HCl) in the stomach, it does not stimulate the secretion of trypsinogen. Trypsinogen is secreted by the pancreas and is activated by enterokinase in the small intestine.

### Step 3: Analyze the third statement
- **Statement**: "Erythropoietin is produced by the juxtaglomerular cells of the kidney."
- **Analysis**: This statement is correct. Erythropoietin (EPO) is a hormone produced primarily by the kidneys, specifically by the juxtaglomerular cells, in response to low oxygen levels in the blood. Its primary function is to stimulate the production of red blood cells in the bone marrow.

### Step 4: Analyze the fourth statement
- **Statement**: "CCK acts only on gallbladder."
- **Analysis**: This statement is incorrect. Cholecystokinin (CCK) does act on the gallbladder to stimulate bile release, but it also has effects on the pancreas (stimulating enzyme secretion) and slows gastric emptying.

### Conclusion
After analyzing all the statements, we find that the only correct statement is the third one: "Erythropoietin is produced by the juxtaglomerular cells of the kidney."

### Final Answer
The correct option is **Option 3**.

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