Which of the following is a sesamoid bone?

Options

A. Clavicle
B. Pisiform
C. Patella
D. Pterygoid

Answer

To determine which of the given options is a sesamoid bone, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Definition of Sesamoid Bones**:
- Sesamoid bones are small, round bones that are embedded within tendons. They help to protect the tendon and can improve the mechanical advantage of the muscles.

2. **Analyze the Options**:
- **Option 1: Clavicle**: This is a long bone that connects the arm to the body. It is not embedded in a tendon.
- **Option 2: Pisiform**: This is a small wrist bone, but it is not classified as a sesamoid bone.
- **Option 3: Patella**: This is known as the kneecap and is a classic example of a sesamoid bone. It is embedded in the tendon of the quadriceps muscle.
- **Option 4: Pterygoid**: This refers to a group of bones in the skull and is not a sesamoid bone.

3. **Identify the Correct Answer**:
- Based on the definitions and analysis, the correct answer is **Option 3: Patella**.

### Final Answer:
The sesamoid bone among the options given is **Patella**.

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