5 Choroid

Question 1

What three things entail the uveal tract?

Answer 1

Choroid
Ciliary body
Iris

Question 2

The choroid extends from _______ to optic nerve. Located between the _____ _and _____.

Answer 2

Ora-serrated

Sclera and retina

Question 3

What are the connective tissue layer borders of the choroid?

Answer 3

Suprachoroid

Bruch’s Membrane

Question 4

What transverses a potential space between the sclera and the choroidal vessels? It contains fibroblasts and melanocytes.

Answer 4

Suprachoroid Lamina

Question 5

The looseness of the _______ allows the vascular net to swell without causing detachment.

Answer 5

Suprachoroid lamina

Question 6

The _______ space carries long posterior ciliary arteries and nerves from posterior to anterior globe

Answer 6

Suprachoroidal

Question 7

A choroidal stroma is pigmented, vascularized, loose CT that contains what 5 cells?

Answer 7

Melanocytes
Fibroblasts
Macrophages
Lymphocytes
Mast cells

Question 8

Choroidal stroma has collagen fibrils arranged circularly around vessels.. what are they?

Answer 8

Short posterior ciliary arteries

Question 9

Tiers of vessels of Choroidal stroma from outer to inner?? (3)

Answer 9

Haller’s layer
Sattler’s layer
Capillary bed

Question 10

Do choroidal veins have valves?

Answer 10

Nah

Question 11

What nervous system innervates choroidal vessels?

Which causes vasoconstriction and reduced blood flow?

Which causes vasodilation, increased blood flow?

Answer 11

Autonomic

Sympathetic. From symp trunk

Parasympathetic. CNIII inferior division

Question 12

What is a specialized capillary bed that contains fenestrated capillaries with most of them FACING THE RETINA?

Answer 12

Choriocapillaris

Question 13

The choriocapillaris is the ______ in the macular area, where its the sole blood supply for this small region of the retina

Answer 13

Densest

Question 14

What’s Bruch’s membrane from outer to inner? (Superficial to deep)

1
2
3
4
5

Answer 14

1 interrupted basement membrane of choriocapillaris

2 outer collagenous zone

3 elastic layer

4 inner collagenous zone

5 basement membrane of RPE cells

Question 15

What’s responsible for the tight adhesion between choroid and outer pigmented retina layer?

Answer 15

Fine filaments from basement membrane of RPE merge with fibrils of inner collagenous zone

Question 16

At the ora-serrata, the basement of the _____ is continuous with the basement membrane of the _____ of the ciliary body.

Answer 16

RPE

Pigmented epithelium

Question 17

The _____ choroid provides nutrients to the outer retina.

The _________ choroid absorbs excess light

The ________ space provides a pathway for posterior vessels and nerves supplying the anterior seg

Answer 17

Vascular

Darkly pigmented

Suprachoroidal

Question 18

The sensory innervation of the uvea is provided through the __________ branch of the trigeminal nerve

Answer 18

Nasociliary

Question 19

_________ fibers form the superior cervical ganglion via ophthalmic and LONG ciliary nerves innervate iris dilator and ciliary muscles.

_______ fibers innervates iris sphincter and choroidal vessels

Answer 19

Sympathetic

Parasympathetic

Question 20

What are deposits in the inner collagenous zone that can be small, pinhead-sized, yellow white spots in the fundus?

They contain cell fragments and accumulation of ________ material

Answer 20

DRUSEN

Basal laminar material