Nervous System Flashcards Preview

medscionefourtwo > Nervous System > Flashcards

Flashcards in Nervous System Deck (83)
Loading flashcards...
1

precentral gyrus

primary motor cortex - around half assigned to the face

2

postcentral gyrus

primary somatosensory cortex - sense of what is going on around you

3

reading

Supramarginal gyrus

4

writing

Angular gyrus

5

Fasciculi

bundle of fibres connecting one region of the brain to another

6

the Angular gyrus has fasciculi leading to _______ ____ which is found anterior to the _________ _____. This area is responsible for planning the movement of the _____. The Supramarginal gyrus has has fasciculi leading to an area below _______ _____. This area controls the ____. Both of these areas are found in the ______ ______ gyrus.

the Angular gyrus has fasciculi leading to _Exner's_ _area_ which is found anterior to the _precentral_ _gyrus_. This area is responsible for planning the movement of the _hands_. The Supramarginal gyrus has has fasciculi leading to an area below _Exner's_ _area_. This area controls the _eyes_. Both of these areas are found in the _middle_ _frontal_ gyrus.

7

PMC and PSSC organised

carefully = somatotopically (upside down stick figure)

8

arcuate fasciculus

- white matter
- connects Wernicke's to broca's

9

connectional/conduction aphasia

problem with the arcuate fasciculus.
Patient cannot copy what you say to them.
Can't mount a logical response, but can understand and interpret speech

10

formulate speech

Broca's

11

Frontal association cortex

intelligence
personality
behaviour
mood
cognitive function

12

parietal association cortex

spatial skills
3D recognition (shapes, faces, abstract perception)

13

temporal association cortex

memory
mood
aggression
intelligence

14

______ side of the brain is responsible for language in most people

left (left-side dominant)

15

how much of the PMC is responsible for the face

1/3 - 1/2

16

Wernicke's

- interpret speech
- receives raw information from the PAC

17

aphasia =

inability to manage spoken word

18

sensory/fluent aphasia

- Wernicke's area is affected
- word salad

19

motor/non-fluent aphasia

- problem with Broca's area
- can't formulate speech

20

Primary auditory cortex

tonotopic representation
different areas receive different tones

21

Primary visual cortex

small granule cells which allow sense of sight

22

supplementary visual cortex

interprate sense of sight

23

Non-dominant hemisphere (right - usually)

- non-verbal language (e.g. body language)
- emotional expression (tone of language)
- spatial skills (3D)
- conceptual understanding
- artistic/musical skills

24

effects of injury on the non-dominant hemisphere

- loss of non-verbal language
- speech lacks emotion
- spatial disorientation
- inability to recognise familiar objects
- loss of musical appreciation

25

how many pair of spinal nerves

31 pairs = 62 total

26

number of pairs of each spinal cord nerve:
cervical nerves =
thoracic nerves =
lumbar nerves =
sacral nerves =
coccygeal nerves =

cervical nerves = 8
thoracic nerves = 12
lumbar nerves = 5
sacral nerves = 5
coccygeal nerves = 1

27

dermatome map shows...

which nerves of the spinal cord are responsible for which parts of the body

28

the Meissner corpuscle responds to _______ whereas the Pacinian corpuscle responds to _______ . The are both ________ and carry impulse at ____ m/s. They also exhibit ________ sensation - the ability to distinguish between 2 points of touch.

the Meissner corpuscle responds to _touch_ whereas the Pacinian corpuscle responds to _pressure_ . The are both _myelinated_ and carry impulse at _50_ m/s. They also exhibit _discriminative_ sensation - the ability to distinguish between 2 points of touch.

29

Pain and temperature nerve ending

- free nerve ending
- unmyelinated
- 1m/s

30

somatosensory system

touch, temprature, pain and pressure pathways