Which part of the ear is referred to as the inner rim of the pinna?

The inner rim of the pinna, which is the external part of the ear, is indeed referred to as the antihelix. It is a crucial anatomical structure that helps define the shape of the outer ear and plays a role in the collection and direction of sound waves into the ear canal. The antihelix is typically a raised fold of cartilage that is found towards the inner side of the outer ear, making it distinct from other parts such as the helix, which is the outer rim.

In contrast to the antihelix, the helix is the outermost fold of the pinna, bordering the external ear. The tympanic refers to the eardrum area in the middle ear, and the mastoid is associated with the mastoid process of the temporal bone, located behind the ear. Understanding these anatomical features is essential for professionals in audiology and hearing instrument fitting, as they relate to the overall function and structure of the ear.