Face and Neck Injuries

what muscles allow for movement of head

sternocleidomastoid

orbit protects over % of eyeball

80%

vitreous humor

clear, jellylike fluid near back of eye

aqueous humor

front of lens fluid

conjunctiva

clear membrane that covers eye

lacrimal glands

produce fluid to keep eye moist

sclera

white, fibrous tissue that maintains globular shape

cornea

replaces sclera in front of pupil; allows light to enter eye

iris

circular muscle behind cornea

pupil

opening in center of iris; allows light to move to retina

lens

lies behind iris

retina contains _____ endings

nerve

choroid

nourished layer of blood in retina