Question

In an adult human, how many bones are present as ear ossicles?
A. 4
B. 3
C. 6
D. None of these

Answer 1

Ear bone is also known as Auditory Ossicle, any of the three small bones in the central ear of all creatures. The phrase "ossicle" literally signifies "tiny bone".

Complete Answer:
Before we find out the correct option let us know a little about ear ossicles. The ear ossicles which are also known as the auditory ossicles are basically three bones which are present in the middle ear and are also the smallest bones present in the human body.

Option B: In a grown-up individual, 3 bones are present in the ear ossicles namely, stapes, incus and malleus. The ossicles are also known as auditory ossicles. Ear ossicles are the tiniest bones in the mortal body. Therefore this is the correct option.

The function of three ossicles are:
1. Malleus - It is a hammer shaped part which is attached to the tympanic membrane and is the largest ear ossicle.
2. Incus - It is an anvil - shaped ear ossicle which is connected to the stapes.
3. Stapes - It is the smallest bone and ossicle in the human body.

Therefore option B is correct.

Additional information: The human ear has three parts,
1. External or outer ear
2. Middle ear
3. Internal ear

The function of ear is as follows,
- It helps in hearing
- It has role in balancing the body as the eustachian tube equalizes the air pressure in the middle ear

Note: The ear ossicles help in transmitting sounds from the air to the cochlea. In case the auditory ossicles are absent it could lead to moderate to severe hearing impairment.