Nephrons are connected with

Options

A. Respiratory system
B. Nervous system
C. Circulatory system
D. Excretory system

Answer

To answer the question "Nephrons are connected with," we can follow these steps:

### Step 1: Understand what nephrons are
Nephrons are the basic structural and functional units of the kidney. They play a crucial role in the excretory system by filtering blood and forming urine.

### Step 2: Identify the options
The options given are:
1. Respiratory system
2. Nervous system
3. Circulatory system
4. Excretory system

### Step 3: Analyze the role of nephrons
Nephrons are primarily involved in the excretory system, where they filter waste products from the blood, regulate electrolyte balance, and maintain water homeostasis in the body.

### Step 4: Eliminate incorrect options
- **Respiratory system**: This system is responsible for gas exchange, not waste elimination.
- **Nervous system**: This system controls body functions and responses but does not involve nephrons.
- **Circulatory system**: While blood is filtered through the nephrons, the nephrons themselves are not part of this system.

### Step 5: Conclude with the correct answer
Since nephrons are integral to the process of waste elimination and urine formation, they are connected with the **excretory system**. Therefore, the correct answer is option 4: **excretory system**.

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