Flashcards in 15.1 Deck (59)
In the eye is parasympathic or sympathetic responsible for pupil size decreasing?
In the eye is parasympathic or sympathetic responsible for pupil size increasing?
Which part of the eye contains the photosensitive neural layer of the eye?
Rods or Cones
Dim light, peripheral vison receptors
Rods or cones
vision receptors for bright light
rods or cones
more numerous and more sensitive to light
no color vision or sharp images
high resolution color vision
Numbers greatest at periphery
Outer segment of photoreceptors are made of..
flattened plasma membrane
What is the term for the light sensitive molecule
WHat is protein plus vitamin A dervived chromophore
Term for when a single photon (light particle) that causes entire protein to change shape
What is retinal originally derived from
In retinal synthesis what happens after its isomertized by light
must be recycled by multi step enzymatic process that occurs partly in photoreceptor cells and partily in support (pigmented) cells
Which part of the eye contains mostly cones
Which part of the eye contains all cones
Which part of the eye is responsible for the best vision
Where is the cone density highest in
Which type of vision is rod density the greatest
What is the cause of Glaucoma
pressure and pinching of the optic nerve
Which eye disease is caused by blocked drainage of aqueous humor increases pressure and causes compression of retina and optic nerve which eventually leads to blindness
Clouding of the eye is referred to as
What eye disease is caused by crystalline proteins clump
Why do cataracts prevent eyesight
light cannot travel through the lens as well
Which is worse wet or dry AMD?
The fovea centralis is the center of what
Rhodopsin is made from what
a G Protein Coupled Receptor
What are the four cells that vision works through
Photoreceptor to Bipolar to Retinal Ganglion to Brain