random anatomy Flashcards
which bone is the optic canal in
sphenoid bone
what attahces the intermediate tendon of the omohyoid to the clavicle
the fascial sling
what does vagus supply
parasympathetic axons to distal midgut
where is the incision for thyroidectomy
collar incision within a natural skin crease or in Langerhans lines
why is this done
to prevent keloid formation
what is a keloid formation/scar
overgrowth of granulation tissue at site of a healed skin injury
what does the tarsal gland secrete
lipid
which vein drains the retina
central retinal vein
this is the only vein draining the retina
what is the venous drainage of the orbit
superior and inferior ophthalmic vein and the valveless facial vein
what is the suspensory ligament of the eye
the fascial sling that supports both eyes in the same vertical position within the orbit
what does damage to one suspensory ligment cause
vertical diplopia
parasympathetic or sympathetic in close vision
parasympathetic
describe the accommodation reflex
ciliary muscles contract-bilateral pupillary constriction
bilateral convergence-medial rotation of both eyes
lens relaxes-lens becomes spherical due to contraction of the ciliary muscles
what stimualates reflex tears
afferent limb of the reflex is v1 ophthalmic
efferent limb is parasympathetic axons originating from CNvII
what does the chorda tympani supply
special sensory for taste to the anterior 2/3rds of the tongue and presynaptic parasympathetic axons for submandibular and sublingual glands
