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27 lip 2023 · The outer ear/visible ear is referred to as the pinna. It collects omnidirectional sound waves and transforms them into a unidirectional source of information. By funneling the sound waves in this way, it is able to direct them into the auditory canal and amplify them.
16 sie 2020 · This article will focus on the anatomy of the external ear – its structure, neurovascular supply and clinical correlations. The external ear can be divided functionally and structurally into two parts; the auricle (or pinna), and the external acoustic meatus – which ends at the tympanic membrane.
1 sty 2022 · The delicate yet definitive deflections of the auricle (pinna) of the external ear contribute to the collection of sound. The external acoustic meatus is responsible for the transmission of sounds to the tympanic membrane, which in turn separates the external ear from the middle ear.
7 sty 2021 · The pinna or auricle directs sound waves into the external auditory Meatus (EAM), which then funnels sound waves toward the ear drum or tympanic membrane (TM), causing it to displace and move the ossicular chain of bones in the air-filled middle ear.
Directly anterior to the external auditory meatus is a cartilaginous projection called the tragus. Opposing the tragus is a prominence at the inferior extent of the antihelix called the antitragus. The intertragal notch separates the two.
24 lis 2022 · Traditionally, it was believed that the tragus and superior portion of the pinna drain their lymph to the pre-auricular group of nodes. The cranial portion of the pinna drains to the group of nodes at the tip of the mastoid bone.
24 lip 2023 · Together with the tympanic membrane and the middle ear, the pinna serves to amplify sound. The pinna acts as a funnel to deliver sound to the external acoustic meatus, and the external auditory canal concentrates sound onto the tympanic membrane for further transmission.
