1 / 24

Anatomy of the Ear

Anatomy of the Ear. Parts of the Ear. Is this your ear?. NOPE – This is the Ear!. There are three sections of the ear!. OUTER MIDDLE INNER. Outer Ear. Pinna -also known as the Auricle Ear Canal or External Auditory Canal. Middle Ear. Tympanic Membrane - Ear Drum Eustachian Tube

dhwang
Télécharger la présentation

Anatomy of the Ear

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Anatomy of the Ear Parts of the Ear

  2. Is this your ear?

  3. NOPE – This is the Ear!

  4. There are three sections of the ear! • OUTER • MIDDLE • INNER

  5. Outer Ear • Pinna -also known as the Auricle • Ear Canal or External Auditory Canal

  6. Middle Ear • Tympanic Membrane - Ear Drum • Eustachian Tube • Three Bones known as the Ossicular Chain • Malleus • Incus • Stapes

  7. Inner Ear • Semicircular canals • Cochlea • Organ of Corti • 3 Chambers • 2 Membranes

  8. Review

  9. Anatomy of the Ear Functions of the Ear

  10. Outer Ear • Pinna -also known as the Auricle. • Made entirely of cartilage • Varies in size and shape • Gathers sound waves from the environment • Ear Canal • Lined with hair follicles to keep foreign objects out • Lined with skin-supporting glands • Sebaceous- secretes an oily, fatty substance is cerumen (also known as ear wax) • Cerumen exits ear naturally

  11. Middle Ear • Tympanic Membrane - Ear Drum • Must be protected, extremely thin • Keeps constant temperature and humidity • Vibrates when sound waves hit it • Eustachian Tube – Equalizer • 3 Primary Functions • Helps ventilate middle ear • Equalize pressure • Maintain proper drainage

  12. Middle Ear - The Ossicular Chain • Malleus • Incus • Stapes Purpose: helps transmit sound waves from the tympanic membrane to the inner ear

  13. Look Again.

  14. Inner Ear • Cochlea • Twisting bony shell • Diagrams show the inside • 3 to 5 rows of thousands of tiny hairs • Three Scala (or chambers) • ScalaVestibuli - oval window • Scala Media (cochlear duct) • Scala Tympani - round window

  15. Inside the Cochlea • “Organ of Corti – Also Known As: Organ of Hearing” • full length of Scala Media • resides on basilar membrane • lined with nerve endings come together to make 8th nerve (from here it gets really complicated so we will stop)

  16. Inside the Cochlea • Each chamber had different fluids that cannot mix – if these fluids cannot mix - will kill all nerves. • These fluids separated by membranes • Reissner’s Membrane • Basilar Membrane

  17. Semicircular canals • The canals sit at right angles to each other, are all attached. • They detect horizontal and vertical movement as well as acceleration.

  18. How the Ear Work! • https://www.youtube.com/watch?v=qgdqp-oPb1Q

More Related