Ear ossicles : The middle ear has 3 tiny bones. These three bones of middle ear are called the ear ossicles. They are malleus, incus and stapes.

i. Malleus is hammer shaped.
ii. Incus is anvil shaped and
iii. Stapes is stirrup shaped.

They are joined with each other and extend from inner part of ear drum to the opening of internal ear called fenestra ovalis.

Functions : 

The ear ossicles increase the efficiency of transmission of sound waves to the inner ear.