Vision

Question 1

Electromagnetic spectrum

Answer 1

Humans see visible light 400-700nm WL
Vis light is ROYGBIV
Gamma rays-X-rays-UV-vis-infrared rays-micro waves- radio waves

Question 2

Lacrimal gland

Answer 2

Sup. Lat. drain thru nasolacrimal duct
Tears: water salt mucus
Lysozyme-antibacterial
IgA-antibodies

Question 3

Lateral rectus

Answer 3

CN VI
Abducens

Question 4

Medial rectus

Answer 4

Cross eyed
CN III oculomotor

Question 5

Superior rectus

Answer 5

Elevates
CN III oculomotor

Question 6

Inferior rectus

Answer 6

Look down
CN III Oculomotor

Question 7

Inferior oblique

Answer 7

Elevate + lat turn
CN III oculomotor

Question 8

Superior oblique

Answer 8

Look down + lat turn
CN IV trochlear

Question 9

Fibrous tunic

Answer 9

Out
Sclera
Cornea

Question 10

Cornea

Answer 10

Bends light
Light pass
Reduce UV
transparent

Question 11

Sclera

Answer 11

White of eye
CT
Shape
Protect

Question 12

Vascular tunic

Answer 12

Middle layer
Choroid
Ciliary body
Iris
Pupil

Question 13

Choroid

Answer 13

Many blood vessels
Melanin to reduce light scatter

Question 14

Ciliary body

Answer 14

Produce aqueous humor in anterior chamber

Question 15

Suspensory ligaments

Answer 15

Focus eye
Connect lens to ciliary process

Question 16

Intrinsic eye muscles

Answer 16

Ciliary muscles
Radial muscles - outer dialate pupil- sym
Circular muscles - constrict pupil- psym

Question 17

Iris

Answer 17

Color
Regulates light entering pupil
Radial and circular muscles

Question 18

Inner eye tunic

Answer 18

Lens
Anterior chamber
Vitreous chamber
Retna
Neural layer

Question 19

Lens

Answer 19

Clear
Crystallin proteins
Long thin no organelle cells let light
Gap junctions

Question 20

Anterior chamber

Answer 20

Aqueous humor
Watery
Eye shape
Circulation

Question 21

Vitreous chamber

Answer 21

Thick
Keeps Retna against choroid

Question 22

Retna

Answer 22

Where light-nervous impulse-brain
Pigmented layer-melanin

Question 23

Neural layer

Answer 23

Neural cells before optic nerve sends
Rods/cones photoreceptors
Rhodopsin- bleaching to AP, protein, vA
Central fovea
Optic disc

Question 24

Rods

Answer 24

Dim light
B&W
120 mil per eye
Peripheral

Question 25

Cones

Answer 25

Center eye Color 6 mil per eye 16% blue cones 10% green cones 74% red cones

Question 26

Central fovea

Answer 26

Macula lutea Mid eye Lots of cones

Question 27

Optic disc

Answer 27

Blind spot No rods or cones

Question 28

Farsighted Too tall eye Convex lens correction

Answer 28

Hyperopia

Question 29

Nearsighted Too squished eye Concave lens

Answer 29

Myopia

Question 30

Loss of lens elasticity Ciliary musc struggle

Answer 30

Presbyopia