Ears Flashcards
What is a Weber test? What does it evaluate?
Hearing loss be side
What bone touches the Oval window (vestibular window)
the Stapes
What is the eardrum called? What is it made out of?
The tympanic membrane
Name 3 parts of the outer ear
Auricle, External Auditory canal, Tympanic Membrane
Where does the auditory tube lead?
the pharynx
What is conductive hearing loss
Loss in outer or middle ear, things outside sensory
What is sensorineural hearing loss
in hair cells, nerves, or brain
What is a perforated eardrum? What are causes?
A hole in the tympanic membrane. Caused by explosion, scuba diving, infections
What are produced by the two types of glands in their ears and what is their function?
Cerumen and Sebum. Cerumen is an insects repellent. Sebum is an anti fungal and antimicrobial.
What are the three bones of the middle ear
The Malleus the Incus and the Stapes
Which bone hits the oval window?
The stapes
What is the Auricle made of? What is it function
Elastic cartilage. Collects sound and funnels it in.
Why are ear slightly off set?
To help pick u directionality of sound.
What is the purpose of hair in the OUTER ear.
large hairs that angle out to prevent insects from getting in there.
