A&P Vision Vocabulary

The watery​ ​ (a)   is a fluid that fills the anterior cavity of the eye which helps to maintain the correct ​ (b)   inside the eye and provide nutrients to the cornea.

• aqueous humor
• pressure
• viterous humor
• fovea centralis
• macula lutea
• temperature

The gelatinous ​ (a)   fills the posterior cavity of the eye to hold the ​ (b)   in place.

• vitreous humor
• retina
• aqueous humor
• fovea centralis
• macula lutea
• lens
• iris

​ (a)   is a condition called​ (b)   where the light that comes into the eye is not directly focused on the retina but in front of it, causing the image that one sees when looking at distant objects to be out of focus; often caused by the eye being too ​ (c)   is shape.

• myopia
• nearsightedness
• long
• viterous humor
• macula lutea
• iris
• hyperopia
• short
• color blindness
• farsightedness

​ ​ (a)   is the ability of the eye to focus at different distances by changing the curvature of the lens. For example, when focusing on distant objects, the ciliary muscle ​ (b)   , the suspensory ligaments ​ (c)   , and the lens is stretched thin.

• accommodation
• relaxes
• tighten
• contracts
• loosen
• protactination

​ (a)   are the ​ (b)   common photoreceptors that require more intense light for activation and are connected to their own ​ (c)   neuron.

• cones
• less
• bipolar
• more
• rods
• unipolar

​ ​ (a)   are the ​ (b)   common photoreceptors that require less​ intense light for activation and ​ (c)   ​ are connected to a single ​ (d)   neuron.

• rods
• more
• 15-30
• bipolar
• unipolar
• 2-3
• less
• cones

Place the following structures in the eye that light passes through from outside to inside.

• vitreous humor

• lens

• cornea

• pupil

• retina

Reorder the following structures of the eye after light stimulates cones and/or rods in the retina.

• optic tracts

• lateral geniculate bodies

• optic radiations

• visual cortex

• optic nerve - optic chiasma

The __________ gland or apparatus is the structure that provides tears to clean the eye.

The avascular, (a)   tunic of the eye includes the tough, white ​ (b)   and the transparent ​ (c)   .

• fibrous
• sclera
• cornea
• vascular
• lens
• iris
• ciliary body (muscle)
• neural
• retina