Shared Flashcard Set

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May 1
Pages 355-363
11
Anatomy
Undergraduate 1
04/30/2013

Additional Anatomy Flashcards

 


 

Cards

Term

Photreceptors

 

Definition
  • light sensing cells in the eye
Term
Choroid
Definition
  • highly vascular membrane that constitutes the psoterior three-fourths of the vascular tunic
  • provides oxygen and nutrients to the retina and sclera
Term
Ciliary body
Definition
  • doughnut-shaped ring of tissue that encircles the lens¬†
  • composed of a rck network of blood vessels mixed with lesser amounts of fibrous tissue and smooth muscle fibers
Term
Suspensory ligaments
Definition
  • extend between the lens and the ciliary body
Term
Iris
Definition
  • arises from the anterior edge of the ciliary body
  • colored part of the eye
  • thin, pigmented disc composed of fibrous tissue and smooth muscle fibers
  • sits between the cornea and the lens
Term
Retina
Definition
  • image snesing layer of the eyeball
  • origin of visual pathway
Term
Fovea
Definition
  • small pit
  • small and highly sensative part of the retina responsible for central vision
Term
Aqueous Humor
Definition
  • clear, watery fluid secreted by the ciliary body
Term
Schlemm's canal
Definition
  • a duct that encircles the eye at the base of the ciliary body
Term
Ganglion cells
Definition
  • neurons in the retinal surface
  • gather at the optic disc to form the optic nerve
Term
Bipolar cells
Definition
  • neurons with two extensions
  • one extension= dedrites= receives sinals from the deepest neural layer, the rods and cones
  • other extension= the axon= transmits signals to ganglion cells
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