Vetinerary Assistant Practice Exam

Question: 1 / 400

Which bone is recognized as the largest sesamoid bone in the body?

Fibula

Tibia

Patella

The patella, also known as the kneecap, is recognized as the largest sesamoid bone in the body. Sesamoid bones are embedded within tendons and serve to protect tendons from stress and wear, as well as to enhance the mechanical advantage of muscles. The patella specifically articulates with the femur and plays a critical role in the knee joint's function, helping to stabilize the joint during movement. Its position allows it to improve the leverage of the quadriceps muscle during activities such as walking, running, and jumping, making it vital for locomotion.

In contrast, the fibula and tibia are long bones of the lower leg, and the humerus is the long bone of the upper arm. While they serve important structural functions, they do not fall into the category of sesamoid bones and therefore do not play the same roles as the patella.

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Humerus

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