Spinal Anatomy Special Senses (9%) Flashcards
What is gustation?
taste
Which papillae are cylindrical, largest, least in number, and have bitter taste receptors?
a. Circum vallate
b. Fungiform
c. Foliate
d. Filiform
a. circum vallate
8-12 in number in a “V” shaped form describes which papillae?
a. Circum vallate
b. Fungiform
c. Foliate
d. Filiform
a. circum vallate
Which papillae are thread-like, sensitive to touch and have NO TASTE?
a. Circum vallate
b. Fungiform
c. Foliate
d. Filiform
d. Filiform papillae
Which papillae are just anterior to the sulcus terminalis?
a. Circum vallate
b. Fungiform
c. Foliate
d. Filiform
a. circum vallate
Which papillae are mushroom shaped?
a. Circum vallate
b. Fungiform
c. Foliate
d. Filiform
b. fungiform papillae
Which papillae are on the posteror roof/mouth lateral margins?
a. Circum vallate
b. Fungiform
c. Foliate
d. Filiform
c. foliate papillae
Which papillae are moste numerous taste receptors?
a. Circum vallate
b. Fungiform
c. Foliate
d. Filiform
b. fungiform papillae
Which papillae are located at the tip of the tongue?
a. Circum vallate
b. Fungiform
c. Foliate
d. Filiform
b. fungiform papillae
What is the nerve supply to the anterior 2/3 of the tongue?
CN Vll (facial nerve)
What are the tastes associated with the anterior 2/3 of the tongue?
sweet
salty
and sour
What is the pathway of the anterior 2/3 of the tongue?
CN Vll –> Chorda tympani –> pteryggopalatine –> solitary tract & nucleus
What CN is to the posteror 1/3 of tongue?
CN lX (glossopharyngeal)
What taste is associated with the posterior 1/3 of the tongue?
bitter
What CN is associated with taste of the epiglottis & larynx?
CN X (vagus)
What type of taste is associated with the epiglottis and larynx?
bitter
What is an embryonic thryroid diverticulum, (dorsal depression of tongue)?
Foramen caecum
What are is the olfactory bulb in?
limbic area
Granular, mitral, and tufted cells as well as a glomerulus are all contained in what?
olfactory bulb
What is the pathway of nerve supply for olfaction?
CN l to cribriform plate of the ethmoid bone –> lateral olfactory stria –> UNCUS or medial olfactory stria –> Subcallosal gyrus
What type of cells line the upper surface of the superior concha (main chemoreceptor)?
Pseudostratified columnar epithelium
“I smell a SKUNCUS in my UNCUS”
smell is in the uncus
What does the retina develop from?
ECTODERM
Sclera is derived from?
DURA
What are the retinal cells?
- Amacrine
- bipolar
- ganglion
- horizontal
- pigments
- rods and cones (rhodopsin)
What is the pathway of nerve sreply for vision?
Retina –> optic nerve –> optic chiasm –> optic tract (connects superior colliculus) –> lateral geniculat nucleus –> optic radiations –> calcarine fissure of occipital lobe
cones are ….
color
Where is the are of greatest acuity?
Fovea centralis
Where is the fovea centralis?
center of macula lutea
Does the fovea centralis contain rods, cones, or both?
cones only
Where is the “blind spot”?
Optic disc
What is the optic disc?
where optic nerve and vessels attach to the eye
What muscle controls lens shape?
ciliary muscle
What is the auditory pathway?
Spiral ganglion –> cochlear nerve –> ventral the dorsal cochlear nucleus –> Lateral lemniscus –> Inferior coliculus –> Medial Geniculate –> Temporal lobe “LIM”
What is the order or pathway in which sound travels?
External auditory meatus –> Tympanic Membrane (ear drum) –> Handle of malleus –> Head of the malleus –> Incus –> Stapes –> Oval window –> cochlea –> Round window
M.I.S O.C.R.
What canals deal with angular acceleration and deceleration?
Semicircular canals
What canals deal with linear acceleration?
Utricle & Saccule
What is the tube going from the middle ear to the nasopharyngeal area?
Auditory tube
What is the auditory tube aka?
Eustachian tube
What is the cause of glaucoma?
intraocular pressure
What contains perilymph?
cochlea
What structures contain endolymph?
Scala media
Saccule
Utricle
Semicircular ducts
Cones are for……
color
Atreous humor associate with ….
anterior
Vitrious humor associate with….
posterior
What is an IVD remnant?
Nucleus pulposus
EOP and IOP are confluences of __________
sinuses
Fovea centralis = _________
greatest acuity
Optic disc is the _______ _______
blind spot
