The pinna are the visible parts of the ears located on the outside of the head. Pinna, derived from the Latin word for feather, are what a casual observer usually refers to when they are pointing to your ears. The pinna, or auricles, as they are scientifically known, are the visible parts of the ears located on the outside of the head.
The developing Pinna is first noticeable around the sixth week of gestation in the human foetus, developing from six rounded protuberances (the six hillocks of Hiss) which are derived from the first and second branchial arches.
The pinna, or auricles, as they are scientifically known, are the visible parts of the ears located on the outside of the head. The biological structure of the outer ear is composed mainly of cartilage, which provides the pinna with a great deal of flexibility and ability to be positioned for optimal listening.
Anatomy Pinna Jp Image Diagram - Chart - diagrams and charts with labels. This diagram depicts Anatomy Pinna Jp Image