GROSS ANATOMY

Detailed explanation-1: -What is the pinna? The pinna is the only visible part of the ear (the auricle) with its special helical shape. It is the first part of the outer ear’s anatomy that reacts to sound. The pinna’s function is to act as a kind of funnel which assists in directing the sound further into the ear.

Detailed explanation-2: -Known as the pinna (and also auricle), this part of the body acts as an acoustic antenna and is made of ridged cartilage covered by skin. And, although its shape may look haphazard and random, the pinna’s structure of “hills” and “valleys” allow us to interpret the sounds of the world around us.

Detailed explanation-3: -The auricle (pinna) is the visible portion of the outer ear. It collects sound waves and channels them into the ear canal (external auditory meatus), where the sound is amplified. The sound waves then travel toward a flexible, oval membrane at the end of the ear canal called the eardrum, or tympanic membrane.

Detailed explanation-4: -Take the human pinna, for example. Its twists and folds are such that they specifically enhance sounds with a pitch that is typical for a human voice, a sound humans care about. They enhance these sounds up to 100 times and leave other pitches untouched.

Detailed explanation-5: -The medical term for the outer ear is the auricle or pinna. The outer ear is made up of cartilage and skin. There are three different parts to the outer ear; the tragus, helix and the lobule.