What is the correct location of the human kidneys?

Options

A. Between last lumbar and second sacral
B. Between third thoracic and last lumbar
C. Between last thoracic and third sacral
D. Between last thoracic and third lumbar

Answer

To determine the correct location of the human kidneys, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Anatomy**: The human kidneys are bean-shaped organs that are part of the urinary system. They play a crucial role in filtering blood and producing urine.

2. **Measuring the Size**: The average size of a human kidney is approximately 10 cm long, 5 cm wide, and 4 cm thick. This gives us an idea of their dimensions.

3. **Identifying the Location**: The kidneys are located in the abdominal cavity and are attached to the dorsal body wall.

4. **Vertebral Level**: The kidneys are positioned at the level of the 12th thoracic vertebra (last thoracic) to the 3rd lumbar vertebra. This means that they are situated between these two vertebrae.

5. **Evaluating the Options**: The question provides several options regarding the location of the kidneys:
- Between last lumbar and second sacral
- Between third thoracic and last lumbar
- Between last thoracic and third sacral
- Between last thoracic and third lumbar

6. **Selecting the Correct Option**: Based on the anatomical position of the kidneys, the correct answer is "between last thoracic and third lumbar".

### Final Answer:
The correct location of the human kidneys is between the last thoracic and third lumbar vertebrae.

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