6 Ciliary Body Flashcards

1
Q

The apex of the ciliary body terminates at the ______

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

A

Ora serrata

Posterior chamber

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2
Q

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

A

Iris

Crystalline lens

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3
Q

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

A

Pars plicata

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4
Q

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

A

Ciliary processes

Valleys of Kuhnt

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5
Q

What part of the ciliary body is flatter?

A

Pars plana

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6
Q

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

A

Dentate processes.
Oral bays

Dentate processes

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7
Q

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

A

Zonule fibers

They course from ciliary body to the lens

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8
Q

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

A

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

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9
Q

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

A

Ciliary epithelium

Ciliary stroma

Ciliary muscle

Supraciliaris

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10
Q

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 _______

A

Supraciliaris

Detach

Damage causes detachment!!!

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11
Q

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

A

Smooth

Longitudinal

Radial

Circular directions

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12
Q

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

A

Adjacent to the supraciliaris and parallel to sclera

Base: scleral spur

Apex: choroid

Trabecular meshwork

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13
Q

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

A

Originate at scleral spur

Insert near base of ciliary process

This is transition layer

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14
Q

What is Mullers muscle formed out of?

A

Circular muscle bundles with a sphincter type of action.

Circular ciliary muscle

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15
Q

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

A

PARASYMPATHETIC

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16
Q

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??

A

Stroma!

17
Q

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

A

STROMA

18
Q

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

A

Apex to apex

Head to head

19
Q

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?

A

GAP JUNCITONS

20
Q

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

A

Single layered optic vesicle

Optic cup invagination

Dual layered cup

21
Q

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

A

Outer layer

22
Q

Which layer of the ciliary body epithelium is nonpigmented?

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

A

INNER LAYER

Columnar; plana

Plicata

23
Q

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

A

Metabolically active nonpigmented epithelial cells

INNER LAYER

24
Q

What are the two main functions of the ciliary body?

A

Produces and secretes aqueous humor

Musculature causes accommodation and affects aqueous outflow