Anatomy Flashcards
what nerve supplies the upper eyelid?
CN V1
what nerve supplies the lower eyelid?
CN v2
what nerve supplies the ala of the nose, upper lip…
CN V2
what nerve carries the afferent limb of the blink reflex
where does it go to?
CN V1
pons, via the trigeminal ganglion
what nerves form the first part of the afferent limb of the blink reflex?
the long ciliary nerves
nerve controlling efferent limb of blink reflex
CN VII
what carries sympathetic axons to the orbit?
the ophthalmic artery
where do all presynaptic parasympathetic axons lave the CNS from
CNs III, VII, IX, X and sacral spinal nerves
what nerve supplies the lacrimal gland?
CN VII
nerve supply to submandibular, sublingual, parotid salivary glands?
CN VII to submandibular and sublingual
CN IX to parotid
what do sacral spinal nerves carry parasympathetics to
handgun, pelvis and perineum
what does superior branch of CN III supply
superior rectus and levator palpebral superiors
True or False: parasympathetics travel only in the long ciliary nerve
false
they only travel in the short ciliary nerve
what type of nerves synapse in the ciliary ganglion?
parasympathetics
the ciliary nerves supply autonomic axons to control the diameter of the iris (and pupil) and the refractive shape of the lens
for info
nerve connections in the oculocardiac reflex
V1 and X
sympathetic functions - to get more or less light into eyes?
open eyes wider so more light in
fixed dilated pupil
CN 3 pathology
do the ciliary muscles relax or contract in far vision
they relax in far vision so the ligament tightens and the lens flattens
where do the suspensory ligaments attach from/to
ciliary body to lens
reflex tears
afferent and efferent limbs?
afferent = CN VI efferent = CN VII
other name for base of the orbit
orbital rim
where in the orbit is the apex?
back of the orbit (optical canal)
eyelid muscles closest to eye
superior and inferior tarsi
