Special senses Flashcards
Which taste paplillae are Cylindrical, largest, least in number, bitter receptors, 8-12 V shaped form and anterior to the sulcus terminalis
Circum “Vallate”
Taste papillae project from where
the tongue where taste buds are embedded
which taste papillae are mushroom shaped, most numerous taste receptors and on the tip of the tongue
Fungiform
which taste papillae are posterior roof/mouth lateral margins
Follate
which taste papillae are thread-like, sensitive to touch (no taste though)
Filiform
what is the nerve supply to the anterior 2/3 of the tongue
CN VII to the chorda tympani to the pterygopalatine to the solitary tract and nucleus
what is the nerve supply to the posterior 1/3 of the tongue
CN IX
what can one taste on the anterior 2/3 of the tongue
Sweet, Salty, Sour
what can one taste on the posterior 1/3 of the tongue
Bitter
What is the nerve supply of the epiglottis and larynx
CN X (Bitter)
The foramen caecum is what
Embryonic thyroid diverticulum (dorsal depression of tongue)
The olfactory bulb is where
the limbic area
what does the olfactory bulb contain
granular, mitral and tufted cells and a glomerulus
what is the nerve supply and path of olfaction
CN I to the cribriform plate of ethmoid bone to the lateral olfactory stria to the uncus or medial olfactory stria to the subcallosal gyrus
what is the main chemoreceptor for olfaction
Pseudo-stratified columnar epithelium on the upper surface of the superior concha
the retina develops from what
ectoderm
the sclera is derived from what
dura
the retinal cells include
Amacrine, bipolar, ganglion, horizontal, and pigments, rods and cones (rhodopsin)
what is the nerve supply and path of the optic nerve
Retina to the optic nerve to the optic chiasm to the optic tract to the lateral nucleus to the optic radiation to the calcarine fissure of the occipital lobe
In the retina what is the fovea centralis
center of the macula lutea which provides greates acuity and only contains cones
in the retina the optic disc is where what happens
the optic nerve and vessels attach to the eye
where is the eyes blind spot
on the optic disc
ciliary muscles control what
lens shape
what is the nerve supply and pathway for hearing
spiral ganglion to cochlear nerve to ventral then dorsal cochlear nucleus to lateral lemniscus to inferior colliculus to medial geniculate to Temporal Lobe “LIM”
What is the path that sound travels
External auditory meatus to tympanic membrane (ear drum) to handles of malleus to head of the malleus to the incus to the oval window to the cochlea to the round window
where is the auditory tube (Eustachian tube) located
middle ear to nasopharygeal area
The semicircular canals aid in what
angular acceleration and deceleration
the utricle and saccule aid in what
linear acceleration
the cochlea is full of what
perilymph
The base of the tympanic membrane picks up what sounds
high pitch sounds
glaucoma is what
intraocular pressure increase
Glaucoma is caused by what
blockage of the canal of schlemm
where is vitreous humor located in the eye
posterior eye
where is aqueous humor located in the eye
anterior chambers
What is a remnant of the IVD
nucleus pulposus
cones are for what
color vision
What are some structures that contain endolymph
Scala media
saccule
utricle
semicircular ducts
confluence of sinuses make up
EOP and IOP
the fovea centralis does what with acuity
increases it
where is ones blind spot located
the optic disc
