Temporal Bone
Describe where the petrous part is
The petrous part of the temporal bone is pyramid-shaped and is wedged in at the base of the skull between the sphenoid and occipital bones.
What means "above"?
Superior
What is in-between the superior and inferior crus?
The triangular fossa
What is the reflection of the otoscope light called?
The cone of light
What does HRTF stand for?
Head Related Transfer Function
Describe where the internal acoustic meatus is
is a canal within the petrous part of the temporal bone of the skull between the posterior cranial fossa and the inner ear.
What means "below"?
Inferior
What can you occlude the ear with?
The tragus
Which bone is most visible?
The malleus
Define resonance
Resonance is when the frequencies of forced vibrations on an object matches the object’s natural frequency, causing a dramatic increase in amplitude
Which bone extends out near the eye sockets and downward near the jaw.
Zygomatic process
What is going "towards the middle"?
Medial
What is at the very bottom of the ear?
What is the TM called in "common terms"?
The ear drum
The conductive component of the peripheral auditory system refers to the:
Middle Ear
Describe where the styloid process is
Inferior to the EAM
What is "furthest from the extremity"?
Distal
What is directly across from the tragus?
The antitragus
What is at the top of the TM (above the malleus)?
What is atresia?
It happens when the ear canal does not develop normally. Atresia can be in one ear (unilateral) or both (bilateral). It is often part of microtia, a condition when the outside of the ear (pinna) does not form correctly.
Name a random part of the temporal bone
Styloid process
Zygomatic process
Squamous suture
Petrous
etc.
What is nearest to the extremity?
Proximal
What is known as the "ear canal"?
External auditory/acoustic meatus
How do you tell the difference between the left and right TM?
The cone of light -- the right points to the right and the left points to the left
How long is the external auditory meatus?
2.5-3.5 cm in adults