Question

Smallest bone in human system is
A)Stapes
B)Patella
C)Malleus
D)Incus

Answer 1

Hint: It is located in the middle ear and closest to the inner ear. It is also called a stirrup because of its shape. The disorder caused by this bone is otosclerosis because sound is unable to travel through ear and hearing gets impaired.

Complete answer:
The three smallest bones in the human body are stapes, incus and malleus. They are located in the middle ear. At 3mm - 5mm in size, the stapes is the smallest bone in the body. All the three bones are important for hearing. Stapes are stirrup-shaped bones and it is one of the three bones that are collectively known as ossicles. The ossicles convey sound pressure waves from the eardrum to the inner ear and waves are translated into nerve impulses that go to the brain for identification. The other two ossicles are malleus and incus.

Additional information:Patella is a flat, circular-triangular bone that articulates with the thigh bone and protects the anterior articular surface of the knee joint. Malleus transmit sound vibration from the eardrum to the incus. Incus transmit these vibrations to the stapes. The disorder caused by impairment of these bones is otosclerosis.

Note:The stirrup-shaped bone called stapes connected to the oval window into the inner ear. They are the lightest and smallest bone in the human body. The stapes situated between incus and malleus that transmits sound vibration from incus to oval window.