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Anatomy
Anatomy
Structures of the body
Pathology
Pathology
Cause and Effect of Disease
Physiology
Physiology
Function of the structures in your body
The Peripheral System
The Peripheral System
Outer ear
Outer ear
Pinna and Ear Canal
Middle ear
Middle ear
The area past your eardrum. Ossicle bones, middle ear cavity, and muscles.
inner ear
inner ear
Two sections:
the cochlea and vestibular system, as well as the VIII nerve that has an auditory branch and vestibular branch.
(Musiek and Baran, page 3.)
To be able to hear correctly, all parts of the auditory system must be working!
To be able to hear correctly, all parts of the auditory system must be working!
The peripheral system: Temporal bone
The peripheral system: Temporal bone
Peripheral means away from the center.
This system includes the temporal bone, which has 6 parts: the squamous portion, the mastoid process, the external auditory meatus (ear canal,) styloid process, mandibular fossa, and zygomatic process. When looking at your ear and head, this is the bone all around ear and behind it, you probably thought it was just your skull. Cool Right?
The Central Auditory Nervous System
The Central Auditory Nervous System
(CANS)
(CANS)
The Brainstem:
The midbrain, pons, medulla, and spinal cord.
The Brain:
4 lobes:
occipital, temporal, parietal, and frontal
Auditory Cortex:
Part of the temporal lobe that processes auditory information.
Nerve Fibers: Afferent-goes up and send messages to the brain.
Efferent- goes down, and sends messages away from brain to ear.
(Musiek and Baran, page 20.)
3 Types of Hearing Loss
3 Types of Hearing Loss
Conductive: issue in the outer or middle ear and it can be corrected
Sensorineural: issue with the inner ear within the cochlea or auditory nerve and most likely can’t be fixed.
Mixed: issue with both sections (Outer/middle and inner ear.)
Image via https://www.healthyhearing.com/help/hearing-loss/types
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