The pinna, also called the auricle, refers to: O a Ob C The bones in the middle ear. The tube that carries sound deeper inside the ear. The outside of the ear, commonly haserred to as just The thin sheet that vibrates when sound hits it. The fluids in the inner ear.

The outside of the ear, commonly referred to as just the ear.

Explanation:

The ear is the organ that allows us to hear things around us. To mammals, including humans, it's also the organ that gives balance.

Although it may seem like a simple organ, the ear has a very complex anatomy. It has three main parts: the outer, middle, and inner ear. All of them are made up of multiple smaller structures.

The pinna (also called the auricle) is one of the parts of the outer ear. It is the outside part of the ear, which we commonly refer to as just the ear.