Name the type of movable joint present at the knee or at the elbow.

Explanation

**Step-by-Step Text Solution:**

1. **Understanding Joints**: Joints are the connections between two or more bones in the body. They allow for movement and flexibility in the skeletal system.

2. **Types of Joints**: There are various types of joints in the human body, and they can be classified based on their structure and the type of movement they allow.

3. **Focusing on Movable Joints**: The question specifically asks about movable joints, which are joints that allow for a range of motion.

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