Where does the ornithine cycle operate?

Explanation

### Step-by-Step Solution:

1. **Understanding the Ornithine Cycle**: The ornithine cycle, also known as the urea cycle, is a biochemical pathway that converts ammonia, a toxic byproduct of protein metabolism, into urea, which is less toxic and can be excreted from the body.

2. **Location of the Cycle**: The ornithine cycle primarily operates in the liver. The liver is a vital organ responsible for various metabolic processes, including the detoxification of ammonia.

3. **Role of Hepatocytes**: Within the liver, the specific cells that carry out the ornithine cycle are called hepatocytes. These cells are specialized for metabolic functions, including the synthesis of urea.

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