Select a sesamoid bone:

Options

A. Patella
B. Femur
C. Ulna
D. Pterygoid

Answer

**Step-by-Step Solution:**

1. **Understanding Sesamoid Bones:**
- A sesamoid bone is a type of bone that is embedded within a tendon or muscle. Its primary function is to protect tendons from stress and wear, and to enhance the mechanical advantage of the muscle.

2. **Evaluating the Options:**
- **Option 1: Patella**
- The patella, commonly known as the kneecap, is indeed a sesamoid bone. It is a flat, rounded, triangular bone that articulates with the femur at the knee joint.

- **Option 2: Femur**
- The femur is the thigh bone and is the longest bone in the body. It is not a sesamoid bone, as it is a long bone that supports the weight of the body and allows for leg movement.

- **Option 3: Ulna**
- The ulna is one of the two long bones in the forearm (the other being the radius). It runs from the elbow to the smallest finger. This is also not a sesamoid bone.

- **Option 4: Patariguaid**
- The patariguaid is a paired bone that forms part of the palate in the vertebrae. It is not a sesamoid bone.

3. **Conclusion:**
- Based on the evaluation of the options, the correct answer is **Option 1: Patella**, as it is the only sesamoid bone among the given choices.