6 Ciliary Body

Question 1

The apex of the ciliary body terminates at the ______

It’s like a triangle.. one leg borders the sclera and the other borders the ________

Answer 1

Ora serrata

Posterior chamber

Question 2

The ciliary body is a ring like structure just behind the _____ and surrounding the __________ of the eye

Answer 2

Iris

Crystalline lens

Question 3

What part of the ciliary body is wider, more anterior portion containing the ciliary processes?

Answer 3

Pars plicata

Question 4

Regarding the Pars Plicata… Approximately 70-80 _____ extend into the posterior chamber and the Regions between them are called _______

Answer 4

Ciliary processes

Valleys of Kuhnt

Question 5

What part of the ciliary body is flatter?

Answer 5

Pars plana

Question 6

The ora serrata have a serrated pattern, the forward pointing pieces which are teeth, are called ______. The rounded portions beneath the teeth are called _______.

These ______ are elongations of retinal tissue into the region of pars plana

Answer 6

Dentate processes.
Oral bays

Dentate processes

Question 7

What are the fibers that attach to between the ciliary body and crystalline lens? Manipulate lens during accommodation

Answer 7

Zonule fibers

They course from ciliary body to the lens

Question 8

List the layers of the ciliary body fro superficial to deep (outer to inner) 4

Answer 8

1) Supraciliaris
2) Ciliary Muscle
3) Ciliary Stroma
4) Ciliary Epithelium

Question 9

List the layers of the ciliary body from deep to superficial (inner to outer) 4

Answer 9

Ciliary epithelium

Ciliary stroma

Ciliary muscle

Supraciliaris

Question 10

What’s the loose connective tissue in the ciliary body that contains melanocytes, fibroblasts, and collagen bands?

This arrangement makes the ciliary body to slide but not _______

Answer 10

Supraciliaris

Detach

Damage causes detachment!!!

Question 11

The ciliary muscle is made up of ____ muscle that has what 3 types of fibers?

Answer 11

Smooth

Longitudinal

Radial

Circular directions

Question 12

Where do longitudinal muscle fibers lie? What are the anchor points?

Answer 12

Adjacent to the supraciliaris and parallel to sclera

Base: scleral spur

Apex: choroid

Trabecular meshwork

Question 13

What are the borders of the radial fibers in the ciliary body?

Answer 13

Originate at scleral spur

Insert near base of ciliary process

This is transition layer

Question 14

What is Mullers muscle formed out of?

Answer 14

Circular muscle bundles with a sphincter type of action.

Circular ciliary muscle

Question 15

The ciliary body is dually innervated by the autonomic nervous system, which one causes contraction??

Answer 15

PARASYMPATHETIC

Question 16

What’s the ciliary body layer that’s highly vascularized, LCT, that lies between ciliary muscle and epithelial layers and forms the CORE OF EACH OF THE CILIARY PROCESSES??

Answer 16

Stroma!

Question 17

What part of the ciliary body is the CORE of each of the ciliary processes?

Answer 17

STROMA

Question 18

The two epithelial layers of the ciliary body are positioned _____ to ____ because of the invagination of the neural ectoderm in forming the optic cup

Answer 18

Apex to apex

Head to head

Question 19

Regarding ciliary body epithelium…What connections between the apical surfaces produce a means of cellular communication between the layers and are important in the formation of the aqueous?

Answer 19

GAP JUNCITONS

Question 20

What are the 3 ciliary body epithelium orientations from apex to apex?

Answer 20

Single layered optic vesicle

Optic cup invagination

Dual layered cup

Question 21

What layer of the ciliary body epithelium is pigmented and cuboidal?

Answer 21

Outer layer

Question 22

Which layer of the ciliary body epithelium is nonpigmented?

Composed of _______cells in the pars ______ and cuboidal cells in pars _______

Answer 22

INNER LAYER

Columnar; plana

Plicata

Question 23

What cells are involved in active section of aqueous humor components and serve as a diffusion barrier between blood and aqueous?

Answer 23

Metabolically active nonpigmented epithelial cells

INNER LAYER

Question 24

What are the two main functions of the ciliary body?

Answer 24

Produces and secretes aqueous humor

Musculature causes accommodation and affects aqueous outflow