The Ear Flashcards
1
Q
What are the functions of the ear?
A
- collect auditory stimuli
- transduce the mechanical stimuli
- transmit nerve impulses to CNS
2
Q
What nerves innervate the tympanic membrane?
A
CNs 10, 9, and 5
3
Q
Describe the Eustachian tube and its functions
A
- communication between the middle ear and nasopharynx for air pressure equalization
- lined by muscosal epithelium
4
Q
What is the Guttural Pouch?
A
ventral expansion of the Eustachian tube in the horse
5
Q
What does the Bony Labyrinth consist of?
A
- perilymph
- vestibule
- semicircular canals
- cochlea
6
Q
What does the Membranous Labyrinth consist of?
A
- endolymph
- utricle and saccule
- 3 semicircular ducts
- cochlear duct
7
Q
What are the spaces of the Cochlea?
A
- Scala vestibuli (contains perilymph)
- Cochlear duct (contains endolymph and organ of corti)
- Scala tympani (contains perilymph)
