Question

Which of the following is not a sesamoid bone?
a. Radius
b. Patella
c. Incus
d. Pisiform

Answer 1

The bones which possess the structure of small rounds and are embedded in the flexor tendons of the hand are called Sesamoid bones. Usually, they are found near the joints. The great physician Galen was the one who first named them in the second century. He pointed out these structures in resemblance to sesame seeds. These bones assist in to decline the friction and pressure present in the middle of the flexor tendon and the other joints as it passes in proximity to them.

Complete answer:
- Sesamoid bones present inside a tendon of the organism’s foot. The two bones which exist next to each other lower than the big toe joint in the lowest of the foot.
- The Sesamoid bones help to raise and move the part of the big toe and can exert impulse on the ground which makes running possible to the person.
- The radius of the lower arm is known to be a cartilaginous bone. Hence it is not a Sesamoid bone.
- However, we know that the patella is also acknowledged as in the word kneecap. It is normally a thick, circular, and triangular bone that enunciates with the femur. It is known to cover and protect the frontal articular surface of the knee joint.
- The incus bone is an anvil in shapes, located at the center of the ossicles. It is the bone that connects the malleus to the stapes. It is also called an anvil.
- The pisiform bone is a small pea-shaped bone and one of eight carpal bones that form the part of the wrist joint.

Hence, the correct answer is option (A).

Note: Sesamoid bones from inside the tendons, in a region that wrap around lanky eminences. We can say that they are common in humans. However, the many variables in number. A human being contains 42 sesamoid bones in general. A fracture that occurs in a Sesamoid bone can be acute or chronic. An acute fracture is caused by a trauma causing immediate pain, a chronic fracture may not give pain at the moment but it hurts a lot after a while.