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Flashcards in Lecture 2 Deck (42):
1

2

3

  1. olfactory is carried by what nerve?
  2. what is its origin?
  3. destination?

  1. olfactory nerve
    • cranial nerve 1
  2. Origin:  Olfactory cells of olfactory epithelium
  3. Destination:  Olfactory bulb
     

4

How does the olfactory nerve get to the cerebral cortex?

through the olfactory tract

5

  1. What is the olfactory's tract origin?
  2. Destination?

  1. Origin:  Olfactory Bulb
  2. Destination:  Piriform lobe

6

  1. 1?
  2. 2?
    • What does this do?
  3. 3?

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  1. olfactory epithelium
  2. olfactory cell
    • Olfactory receptor cells are collecting the olfactory information (smells)

    • Note: cell bodies are located in the olfactory epithelium

  3. olfactory nerve fiber

 

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7

4?

5?

6?

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4- cribiform plate

5- olfactory bulb

  • Note: olfactory nerve fibers project here

6- olfactory tract

  • note: fibers from olfactory bulb then go to the tract

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8

1

2

3

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  1. Olfactory cell  

  2. Cilia

  3. olfactory nerve fiber

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9

1

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Olfactory bulb

10

1?

2?

3?

4?

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  1. Olfactory bulb
  2. Medial olfactory tract
  3. Lateral olfactory tract
  4. Pyriform lobe

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11

5?

6?

7?

 

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5- Cilia (part of olfactory cell)

6- olfactory cell

7- olfactory nerve (I)

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12

On what side does the left lateral olfactory tract go to and where?

goes to left side (ipsilateral) to the pyriform lobe

13

which structures are derived from the diencephalon

  1. Thalamus
  2. Epithalamus
  3. Hypothalamus
     

14

what is the the job of the thalamus?

  • Integrates sensory and motor information and projects to cerebral cortex. 
    • kind of like an assistant, removes all other chatter to only show important information

15

Technically the thalamus is what?

Group of bilateral nuceli (collection of cell bodies in CNS)
 

16

1

2

3

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  1. Corpus callosum

  2. Septum

  3. Thalamus

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17

4?

5?

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4- cerebral cortex

5- caudate nuclei

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18

1

2

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  1. Hippocampus
  2. thalamic nuclei

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19

3?

4?

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3- lateral geniculate nucleus of the thalamus

4- medial geniculate nucleus of the thalamus

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20

  1. What does the lateral geniculate nucleus recieve and where
  2. where does it project to

  1. receives visual information from retina
  2. primary visual cortex of the cerebral cortex

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21

  1. what does the medial geniculate nucleus recieve and from where
  2. where does it project to

  1. auditory information from the organ of corti
  2. project to temporal lobe in the primary auditory cortex

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22

in the Thalamic nuclei, where does the following types of information project to

  1. Somatic and Visceral Sensory Receptors

  2. Motor Information

  1. primary somesthetic area
  2. cerebellum and basal nuclei

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23

Only one area that goes to the cortex that will not go through the thalamus

  • what is it?

olfactory, will go to the piriform lobe

24

what goes to the cortex but not through the thalamus?

olfactory

25

  1. 1?
  2. what is its function

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  1. Internal capsule
  2. Everything from thalamus will project to cortex via the internal capsule

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26

  1. what is it
    • what does it do
  2. what is it
    • what does it do

  3. what is it
    • what does it do

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  1. Epithalamus:  (also called Pineal gland). 
    • Endocrine structure, releases melatonin in response to darkness.
  2. Hypothalamus:
    • Multiple nuclei, broad spectrum of functions.

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27

3- what is it? what is another name for it?

4- what is it?

 

3- Hypophysis:  (Also called Pituitary)

4- thalamus

28

What is the posterior pituitary derived from

diencephalon.

29

blue circle

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epithalamus (pineal gland)

30

1?

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Optic chiasm

31

1?

2?

3?

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  1. Thalamus

  2. Hypothalamus

  3. Internal capsule

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32

optic nerve (cranial nerve II)

  1. where are the axons from
  2. what do they carry?

  1. Axons of retinal ganglion cells
  2. Carry visual information from eye to nuclei in brain
     

33

1

2

3

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  1. Retina
  2. Optic Nerve (CN II)
  3. Optic Chiasm

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34

4

5

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4- Optic tract

5- lateral geniculate nucleus of thalamus

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35

  1. what is special about optic chiasm?
  2. why is optic tract different than optic nerve?

  1. Some axons in optic chiasm go to the contralateral and ipsilateral side of brain
  2. Called optic tract because the mix of axons are different than optic nerve

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36

1

2

3

4

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  1. eye
  2. optic nerve
  3. optic chiasm
  4. optic tract

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37

5

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Pituitary, hypophysis

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38

how do you assess the cranial nerve 2?

  1. Pupillary Light Reflex (PLR)
  2. Visual reflex
  3. Menace Response
     

39

how does the Pupillary Light Reflex (PLR) work

  • Visual information from one eye (light directed at eye) is carried to brain and causes both pupils to constrict.
  • Eg. light in left eye causes both left and right pupils to constrict.
     

40

how does visual reflex work

Turn head towards something in peripheral vision
 

41

  1. how does menance response work
  2. what is special about this response in young animals

  1. act as though you will hit one eye and see if they blink
  2. does not work with young animals because it will involve other pathways

42

  1. left and right cerebral cortex connected by?
  2. what type of matter is it?

  1. corpus callosum
  2. white matter

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