Brain 5: Cerebrum Flashcards Preview

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Flashcards in Brain 5: Cerebrum Deck (16):
0

Cerebrum provides

with the ability to read, write, speak, make calculations, compose music, to remember the past, plan for the future, imagine

1

Cerebral cortex is the region of...

the region of grey matter that forms the outer rim about 2-4 mm thick
contains: gyri/convolutions, fissures, sulci, longitudinal fissure

2

longitudinal fissure

most prominent fissure
separates the cerebrum into left and right hemispheres
within the longitudinal fissure is the falx cerebri

3

Frontal lobe and temporal lobe is separated by

lateral cerebral sulcus

4

Frontal lobe and parietal lobe are separated by

central sulcus

5

Temporal lobe and occipital lobe are separated by

Prieto Occipital sulcus

6

immediately anterior to central sulcus

Precentral gyrus
Contains the primary motor area of the cerebral cortex

7

immediately posterior to the central sulcus

post central gyrus contains the primary somatosensory area of the cerebral cortex (sensory humunculus)

8

Cerebral white matter includes

association tracts: axons conduct nerve impulses between gyri in same hemisphere
Commissural tracts: axons that conduct nerve impulses from gyri in one cerebral hemisphere to corresponding gyri in the other cerebral hemisphere
Projection tracts: axons that conduct nerve impulses from the cerebrum to lower parts of the CNS

9

3 major groups of commissural tracts

corpus collosum-largest fiber bundle in the brain
Anterior commisure
Posterior commisure

10

3 basal nuclei

globus pallidus
putamen
caudate nucleus

11

What do basal nucleis

basal nuclei receive input from the cerebral cortex and provide output to motor parts of cortex
they also have connections with one another

12

basal nuclei function

regulate initiation and termination of movements
suppress unwanted movements and regulate muscle tone
control subconscious contractions of skeletal mm
influence cortical function
(initiating and terminating cognitive process like attention, money and planning)

13

Dysfunction of circuits between basal nuclei + limbic system

Perkinson's disease
schizophrenia
obsessive compulsive disorder
chronic anxiety

14

Limbic system

emotional brain
plays a major role in a range of emotions
involved in olfaction and memory

15

limbic lobe has

olfaction and memory
cingulate gyrus
parahippocampal gyrus
hippocampus - short term and long term memory