Which ones regulate solute reabsorption during urine formation

Options

A. ADH and angiotensin
B. Angiotensin II and angiotensin I
C. Norepinephrine and epinephrine
D. Angiotensin II and aldosterone

Answer

### Step-by-Step Solution:

1. **Understanding Urine Formation**: Urine formation involves several processes, including filtration, reabsorption, and secretion. The kidneys play a crucial role in regulating the composition of body fluids by controlling the reabsorption of solutes.

2. **Identifying Key Hormones**: Several hormones are involved in regulating solute reabsorption during urine formation. The primary hormones include:
- Antidiuretic Hormone (ADH)
- Angiotensin II (Angiotensin Second)
- Aldosterone

3. **Role of Angiotensin II**: Angiotensin II is a potent vasoconstrictor that increases blood pressure. It also enhances the glomerular filtration rate (GFR) by increasing blood flow to the kidneys. This hormone is crucial for maintaining blood pressure and fluid balance.

4. **Role of Aldosterone**: Aldosterone is secreted by the adrenal cortex and plays a significant role in the reabsorption of sodium and chloride ions in the kidneys. It also promotes water reabsorption, which helps to increase blood volume and pressure.

5. **Combined Effect**: The combination of Angiotensin II and Aldosterone works synergistically to regulate solute reabsorption. Angiotensin II increases blood pressure and GFR, while Aldosterone ensures that sodium and water are reabsorbed, further contributing to increased blood volume and pressure.

6. **Conclusion**: Based on the roles of these hormones, the correct answer to the question "Which ones regulate solute reabsorption during urine formation?" is **Option 4: Angiotensin II and Aldosterone**.