Lecture 1 - dysosmia, agnosia, visual pathway Flashcards Preview

Tri 4 - Neuro Lecture > Lecture 1 - dysosmia, agnosia, visual pathway > Flashcards

Flashcards in Lecture 1 - dysosmia, agnosia, visual pathway Deck (46)
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1

what are the three most common odors available during olfactory test

cinnamon, coffee, cloves

2

when testing smell, which embryonic structure is most involved

telencephalon

3

which smell mostly upregulates parasympathetic activity in the brain/body

peppermint

4

what are the two quantitative alterations of smell

anosmia

hyposmia

5

the absence of the sense of smell

anosmia

6

the diminished olfactory sensitivity

hyposmia

7

qualitative alteration or distortion of the perception of smell

dysosmia

8

distortion in the perception of an odorant; smells different than I remember

parosmia

9

perception of an odor when there is no odorant present

phantosmia

10

inability to classify, contrast, or identify odor sensations verbally, even though the ability to distinguish between smells may be normal

agnosia

11

when viewing the Snellen chart, how far away should the patient be

20 feet

12

when viewing the Rosenbaum chart, how far should the patient be

14 inches

13

if optic nerve is altered, what are the two categories of delema

eye problem

pathway lesion

14

optic nerve

15

optic tract

16

optic chiasm

17

optic cortex

18

lateral geniculate nucleus

19

left anopia

20

left nasal hemianopia

21

bitemporal hemianopa

22

left homonymous hemianopia

23

right superior homonomous quadrantanopia 

24

right inferior homonomous quadrantanopia

25

right inferior homonomous quadrantanopia with central sparing 

26

left anopia the lesion is seen where and what 2 kinds of lesions

lesion in L optic nerve

- meningioma

- orbital tumor

27

left nasal hemianopia the lesion is seen where and what is the most common cause of the lesion

lesion at left lateral chiasm

- aneurysm of upper internal carotid 

28

bitemporal hemianopia the lesion is mostly found where and what are the 3 most common causes

lesion at the medial chiasm affecting only decussating fibers

- pituitary tumors (adenoma)

- prolactinoma 

- craniopharyngioma 

29

left homonomous hemianopia the lesion is mostly found where and caused by what

lesion in R optic tract

- tumor in the medial wall of the temporal lobe

30

what is the function of the lateral geniculate nucleus

point at which the superior and inferior visual fields come together