Exam IV-VisualSystem Flashcards Preview

Neuroscience > Exam IV-VisualSystem > Flashcards

Flashcards in Exam IV-VisualSystem Deck (18):
1

Which cell layer in the eyeball do the sclera and cornea reside?

1st layer

2

Which eyeball cell layer do the choroid, lens, and iris reside?

2nd layer

3

Which eyeball layer does the Retina reside?

3rd layer

4

What are the cell layers (beginning to end) for the flow of light?

Optic Nerve fibers->ganglion cells->amacrine cells->bipolar cells->horizontal cells->cones/rods->pigment epithelum

5

What section of the 2 eyes sees the LEFT visual field?

NasalRetina of L eye and Temporal Retina of R eye

6

Which retinal fibers cross at the chiasm?

the NasalRetinas cross at the chiasm

7

What two things organize cells of the visual cortex?

1. Orientation 2. Color of stimuli

8

What information is provided by the Dorsal Stream? Whats another name for this stream?

Where the stimulus is, motion and spatial relation...Action Stream

9

What information is provided by the Ventral Stream? another name?

3d form and color...Perception stream

10

Which pathway plays a role in circadian rhythm and pupillary dilation?

Retino-HypoThalamic Pathway

11

Which pathway leads to orientation and guides eye movements?

Retino-Tectal Pathway

12

What is the pathway leading to the dorsal stream and the ventral stream?

Reticulo-Geniculo-Striate Pathway

13

What is the name for the pupillary constriction and pupillary dilation pathways?

Light reflex pathway

14

What is the new/key area apart of the pupillary constriction pathway?

Pre-Tectal Area

15

For distance focus, do the cilliary muscles contract or relax?

The cilliary muscles contract for distance focus

16

What would be the result of lesions to the temporal lobe?

contralateral homonymous superior quadrantopia HAHA

17

What causes down and out eye?

Cortial Herniation

18

What is a blind spot?

Scotoma