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quiz one Flashcards

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1
Q

Second layer of the retina–

A

Photosensitive outer segments of rods and cones

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2
Q

When you bring somthing from far away to close up this is an example of wjhat?

A

convergence

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3
Q

a lesion to the optic tract would result in what loss of vision?

A

loss of opposite half field of vision

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4
Q

where is the primary olfactory center?

A

Bdmn area 34/uncus

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5
Q

In the visiual pathway weere are bipolar cell bodies found?

A

outer plexiform layer

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6
Q

What is the outermost layer of the eye called at what does it consist of?

A

Fibrous tunic. Sclera and cornea

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7
Q

Mitral cells relay info posterior via what?

A

the olfactory tract.

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8
Q

in the optic hiasm what fibers cross what which do not?

A

medial side of retina cross, lateral do not.

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9
Q

Eigth layer of the retina

A

Ganglion cell layer: ganglion cell bodies

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10
Q

once the olfactory nerves ever the olfactory bulb where do they synapse?

A

dendrites of mitral cells

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11
Q

Seventh layer of the retina

A

Inner plexiform layer: bipolar cells synapse with ganglion cells here

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12
Q

What are the 4 steps of the visual pathway?

A

Rods/coes, bipolar bodies, ganglion cell bodies, lateral geniculate body

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13
Q

what is not in the fovea centralis ?

A

RODS

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14
Q

Where is C.N. I found

A

olfactory epithelium, lining the superior nasal cavity

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15
Q

where do the majory of optic nerve axons synapse?

A

Lateral geniculate body

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16
Q

what are formed with the synapes of olfactory nerves with on the dendrites of mitral cells

A

Synaptic glomeruli

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17
Q

First layer of the retina-

A

Pigmented layer, adjacent to the choroid

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18
Q

What 3 tyoes of cones receive color info?

A

Red, green, blue,

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19
Q

Are optic nerve axons myelinated ?

A

Yes ( it is a CNS structure)

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20
Q

Fourth layer of the retina

A

Outer nuclear layer contains rod and cone cell bodies

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21
Q

Cones require what to function best?

A

Light

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22
Q

How many nurons are in the vision pathway?

A

4 (some say 5)

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23
Q

there are many forms of color blindness, most of them are________?

A

sex linked

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24
Q

What is the innermost layer of the eye?

A

Retina

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25
Ninth layer of the retina
Nerve fiber layer: retinal ganglion cell axons. These fibers are not myelinated
26
Where do olfactory nerves pass through ?
cribriform plate of the ethmoid bone
27
A lesion to the optic chiasm will result in a loss of what vision?
periphreal vision
28
when the optic nerves unite what structure does it form?
optic chiasm
29
Medial striae fibers cross over at the midline via____and travel to________
Anterior commissure, opposite olfactory buld.
30
olfactory neurons are supported by what?
supporting cells
31
fibers that deal with light reflexes synapse where?
pretectal nucleus of the midbrain
32
Where do olfactory fibers split and and do they split into?
Slpit: anterior perforated substance. Into: medial and lateral olfactory striae
33
Tenth layer of the retina
internal limiting membrane is a glial boundry separating the retina from the vireous body
34
what nerve is from receptors on nasal septum and is largly autonomic
Terminal nerve
35
How many neurons from recport to cortex for the olfactory Nerve?
2. olfactory neuron to mitral cell.
36
Where is the secondary olfactory center?
Bdmn area 28/entorhinal area/parahipocampal area
37
olfactory hairs function as what?
Receptors
38
What covers olfactory neuron axons?
Schwann cells (they are not myelinated
39
After optic nerves synapse in the lateral geniculate body where is it relayed to?
Cerebral cortex in the occipital lobe (broadman area 17)
40
If someone flashes a light in your eye what 2 things can they be testing?
consensual and direct light reflex
41
where is vision the clearest?
fovea centralis
42
Were does the olfactory nerve NOT synapse?
Thalamus
43
What are the two muscles influenced by the techtospinal tract?
SCM, Trapezius
44
Are axons from ganglion cells in the eye myelinated?
no
45
where do optic nerves eneter the skull?
optic canal
46
Sixth layer of the retina
Inner nuclear layer contains cell bodies of bipolar cells
47
fibers synapsing where will then be relayed to the tectospinal tract?
superior colliculus
48
Third layer of the retina
External limiting membrane
49
When you change the shape of the lens by bringing something far to close this is testing what>
accommodation reflex
50
bipolar cells relay info to gnaglion cells. the s\ynapse occurs where>
inner plexiform layer
51
Lateral striae fibers carry information to where?
Olfactory cortex, periamygdaloid and preperiform area. including the uncus (34), on the medial aspect of the temporal lobe
52
when optic nerve fibers split what is formed?
optic tracts
53
Cell bodies of olfactory neurons are what type of neurons? and where are they found?
They are primary (1st order) sensory neurons. Bipolar, and are found in the PNS.
54
What part of the skull if fractured could harm the olfactory nerve?
Cribriform plate
55
If someone thouched your eyen and you brink and pull away what is this testing?
Corneal reflex
56
what is the name of loss of smell
anosmia
57
a leasion to the optic nerve would result with what loss of vision?
Loss of vision on the same side as the lesion (loss of depth perception)
58
Fifth layer of the retina
Outer plexiform layer: rods and cones synapse with bipolar cells here
59
What cells for the myelin on the optic nerve axons?
Interfasicular oligodendrocytes
60
Where are mirtal cell bodies found? and what covers them?
In olfactory bulb (CNS), mylein
61
What is the middle layer of the eye called and what does it consist of?
vascular tunic. Ciliary body, Iris, Choroid

pnn-quiz 1 (1 decks)

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