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52 Cards in this Set

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Identify #3. How is this structure used to divide the ear structures logically?
Eardrum. All structures external to this point are referred to as the external ear. Structures internal from this point to the ossicles are referred to as the middle ear.
Identify #1
Pinna (Auricle)
What is the formal name for earlobe. Where is it located on this diagram?
Lobule. Located in the very bottom right hand corner of the illustration, inferior and external to #2.
What is #2?
External acoustic meatus/canal/tube
What is #3?
Tympanic membrane
What space is located between #3 and #12?
Tympanic cavity
What is #8?
The malleous or hammer.
What is #9?
The anvil or incus.
What is #11?
The stapes or stirrup.
What structure is underneath #11 (The stirrup) in this illustration?
The oval window
What is #14?
The round window
What "tube" does #7 lead to?
The nasopharynx
What is the reddish tube on this model between the hammer (#8) and the anvil (#9)?
The tensor tympani
What is #18?
The cochlea
What is #15?
The semi-circular canals
Looking at the semi-circular canals on this model (#15), name each of the three canals
The canal oriented along the transverse plane (bottom right in this illustration) is the lateral canal.
The canal oriented along the sagittal plane (top left in this illustration) is the anterior canal.
Finally, the canal oriented along the coronal plane (top right in this illustration) is the posterior canal.
What is #12?
The vestibule
What structure is indicated by #15 in this illustration?
The endolymphatic sac
What nerve is indicated by #16?
The vestibulocochlear nerve
What is #1?
Scala vestibuli
What is #2?
Scala tympani
What is #3?
Vestibular membrane
What is #4?
Scala media
What is #5?
Organ of corti
What is #6?
Spiral ganglion
What is #1?
Vestibular membrane
What is #2?
Tectorial membrane
What is #3?
Basilar membrane
Identify the structures visible on this slide
Utilizing the top right section, from left to right, we see the scala vestibuli, then the vestibular membrane, the the scala media - containing the organ of corti, the tympanic membrane, and the scala tympani
What fluid is contained in #1 and #2?
Perilymph
What fluid is in #4 and #5?
Endolymph
What bone moves the fluid in your ear? What window does it hit? What cavity does that window push on? What cavity does it return through? And what window absorbs the shock?
The stapes. The oval window. The scala vestibuli. The scala tympani. The round window.
Identify 1
Scala vestibuli
Identify 2
Scala media
Identify 3
Scala tympani
Identify 4
Vestibular membrane
Identify 5
Tympanic membrane
Identify 7
Organ of corti
Identify 6
Tectorial membrane
What is #13?
Utricle
What is #14
Saccule
What is this a slide of? Identify the areas indicated by number
Olfactory epithelium (technically only the top edge, 1&2).
1. Hair cells
2. Supporting cell
3. Mucus glands
Identify 1
Circumvillate papillae
Identify 2
Fungiform papillae
Identify 3
Filliform papillae
What is depicted here? How do you know?
Fungiform papillae on the tongue. Wider at the top than the bottom, like a mushroom.
What is depicted here? How do you know?
Filliform papillae on the tongue. Long and narrow structures.
What is depicted here? How do you know?
Circumvillate papillae on the tongue. Large central structure with valleys on either side, taste buds visible along the edges of the valleys. (3 bumps in a row)
What is depicted here?
A taste pores with gustatory hairs
What is a Weber test?
A tuning fork is struck and placed medially on the subject's head. Sound should be heard equally in both ears. If so, the subject has equal hearing or equal hearing loss in both ears.
What is a Rinne test?
A tuning fork is struck and placed against the subject's mastoid process. Once the sound fades from perception this way, the fork is held next to the auditory canal; if the subject can hear it again via air conduction, hearing is not impaired.
What is a Barany test?
The subject is placed on a rotating chair or stool and spun. Spinning is stopped abruptly; the subject's eyes should continue scrolling back and forth and the subject should experience nystagmus. If not, injury to the semi-circular canals has occured.