Anatomy Flashcards
What makes up the external ear (Pinna)?
Helix
Anti helix
crus of helix
scaphoid fossa
triangular fossa
lobe
tragus
anti tragus
What are the bones of the middle ear and what is there collective name?
- Maleus
- Incus
- Stapes
Ossicles
What connects the stapes to the inner ear?
Stapes footplate and the oval window
What muscles controls the action of the stapes
Stapedius
What can you normally see on an otoscope when looking at the middle ear?
- Pars flaccida
- Pars tensa
- Annulus
- Lateral process of mallues (the way it is pointing is the ear you are looking in)
- Cone of light
- Umbo
What nerve runs along the tympanic membrane?
Facial - Chorda tympani
How is the tympanic membrane divided?
Anterior Superior
Anterior inferior
Posterior superior
Posterior inferior
What does the inner ear look like and what are the four components?
Two surrounding
Two internal
Bony labyrinthe
Membranous labyrinthe
Vestibule
Cochlear
What is the blood supply to the inner ear?
AICA
Labyrintine artery - This becomes the anterior vestibular artery or the common cochlear which becomes the cochlear and posterior vestibular
What are the eustachian tube related infections (glue ear) more common in children?
Shorter, horizontal, smaller
What bone separates the nose from the orbit?
Lamina paparycea
What two foramen does the facial nerve go through?
Internal acousic meatus
Stylomastoid foramen
When is the forehead spared in relation to nerve disease?
UMN facial nerve disease
Upper spares upper
What is the difference between endolymph and perilymph?
Endolymph is in the labyrinth, perilymph surrounds
What are the three parts of the malleus?
Lateral process
Handle
Umbo
What is this
Incus
What nerve could be damaged from parotid gland damage?
Facial
What muscles are these?
Zygomaticus minor and major
What nerve synapses in meckels cave (trigeminal cave)?
Glossopharyngeal
