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Renin is secreted by JGA/Atrial wall....

Renin is secreted by JGA/Atrial wall.

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### Step-by-Step Solution: 1. **Understanding Renin**: Renin is an enzyme that plays a crucial role in regulating blood pressure. It is secreted by specific cells in the kidneys. 2. **Identifying the Source of Renin**: The primary source of renin secretion is the Juxtaglomerular Apparatus (JGA), which is a specialized structure located in the kidneys. 3. **Function of Renin**: The main function of renin is to increase blood pressure. It does this by promoting the reabsorption of sodium (salt) in the kidneys, which leads to an increase in blood volume and consequently, blood pressure. ...
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