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BIO 152 > Vision Anatomy > Flashcards

Flashcards in Vision Anatomy Deck (13):
1

What three TUNICS make up the anatomy of the eye?

1) FIBROUS TUNIC
2) VASCULAR TUNIC
3) SENSORY TUNIC

2

What structures fall under the category of FIBROUS TUNIC?

The SCLERA and CORNEA

3

What structures fall under the category of VASCULAR TUNIC?

The CHOROID, CILIARY BODY, IRIS, CILIARY ZONULE (aka SUSPENSORY LIGAMENTS), and LENS

4

What structures fall under the category of SENSORY TUNIC?

The RETINA and MACULAR LUTEA FOVEA CENTRALIS (the notes were a little confusing here...)

5

What is the structure and function of the SCLERA?

S - White of the eye, DENSE AVASCULAR CT
F - Protects/shapes eye, anchors eye muscles

6

What is the structure and function of the CORNEA?

S - Transparent, DENSE AVASCULAR CT, well innervated (blinking, tearing), covered by STRATIFIED SQUAMOUS, lined by SIMPLE SQUAMOUS
F - Refracts light as it passes through

7

What is the structure and function of the CHOROID?

S - Many blood vessels, brown pigment
F - Nourishes SCLERA and RETINA, prevents scattering of light

8

What is the structure and function of the CILIARY BODY?

S - CILIARY MUSCLES (circular SMOOTH MUSCLE), CILIARY PROCESSES (with blood vessels)
F - Change LENS shape, secrete AQUEOUS HUMOR

9

What is the structure and function of the IRIS?

S - PUPILLARY CONSTRICTOR MUSCLES and PUPILLARY DILATOR MUSCLES (SMOOTH MUSCLES)
F - Changes PUPIL size to control amount of light entering the eye

10

What is the structure and function of the CILIARY ZONULE (aka SUSPENSORY LIGAMENTS)?

S - Fibers connecting CILIARY BODY to LENS
F - When taut, pull LENS flat. When relaxed, LENS is round

11

What is the structure and function of the LENS?

S - Transparent cells with crystallin protein, avascular
F - Changes shape to focus image on RETINA

12

What is the structure and function of the RETINA?

S - Outer pigmented layer, inner neural layer
F - Prevents light scattering, cells convert E into AP

13

What is the structure and function of the MACULAR LUTEA FOVEA CENTRALIS? (again, the notes confused me here... I don't know if its one word or two different things...)

S - Mostly CONES, pinprick area with CONES only, BIPOLAR and GANGLION CELLS pulled away
F - Detailed color vision