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Flashcards in Cerebrum (vernau) Deck (22)
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1

cerebrum general functions (4)

consciousness

personality

cognition/thought/decision-making

initiation and planning of movements

2

olfactory cortex composition

olfactory bulb, tract

piriform lobe

3

olfactory cortex function

"smell brain"

part of limbic system
- rhinencephalic region

4

paleocortex

piriform lobe

3-5 cortical layers

5

frontal lobe function

primary motor cortex

motor association cortex

behavior, planning, judgment

6

parietal lobe function

somatosensory cortex

including heat and pain sensation

7

temporal lobe function

auditory cortex

8

occipital lobe function

visual cortex

9

neocortex (aka...?)

aka isocortex

frontal, parietal, temporal, occipital lobes

6 cortical layers: molecular, exterior granular, exterior pyramidal, interior granular, interior pyramidal, polymorphic

10

limbic system composition

hippocampus

cingulate nucleus

amygdala

hypothalamus

mammillary bodies

11

limbic system function

4 Fs:
fear
fight
flight
fornication

memory
emotion
instinct

12

archicortex

hippocampus

evolutionarily the oldest

3 cortical layers

13

allocortex

archicortex and paleocortex

(hippocampus and piriform lobe, respectively)

14

basal nuclei function

plan and program movement

some behavior control

input: cerebral cortex
output: brainstem

15

caudate nucleus location

lateral wall of the lateral ventricle

16

association areas

1/5 of total cortex

composed of association fibers (remain within one hemisphere)

relate decisions with past experience

thinking part of the brain

17

commissural fibers

cross and link cerebral hemispheres

18

projection fibers

primarily somatosensory

link cortex and lowers parts of brain to spinal cord

19

basal nuclei dysfunction

involuntary movements at rest

difficulty initiating movement

YST in horses

20

clinical signs of cerebral dysfunction

SEIZURES
tremors

MILD paresis (primary motor pathways not from cerebrum)

change in personality

dulled mentation
- RAS: maintains cerebral awareness

abnormal movement/posture

central blindness

hemi-inattention

21

compare and contrast blindness and central blindness

blindness:
- loss of vision
- PLRs absent
- menace response deficits

central blindess:
- contralateral vision loss
- PLRs intact
- contralateral menace response deficits

22

narcolepsy

sudden transition from awake/conscious to REM sleep

+ cataplexy: sudden and transient loss of muscle tone (usually following excitement/happiness)

excited and happy to suddenly sleep and collapse