Brain 5: Cerebrum

Question 0

Cerebral cortex is the region of…

Answer 0

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

Question 1

Cerebrum provides

Answer 1

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

Question 2

longitudinal fissure

Answer 2

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

Question 3

Frontal lobe and temporal lobe is separated by

Answer 3

lateral cerebral sulcus

Question 4

Frontal lobe and parietal lobe are separated by

Answer 4

central sulcus

Question 5

Temporal lobe and occipital lobe are separated by

Answer 5

Prieto Occipital sulcus

Question 6

immediately anterior to central sulcus

Answer 6

Precentral gyrus

Contains the primary motor area of the cerebral cortex

Question 7

immediately posterior to the central sulcus

Answer 7

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

Question 8

Cerebral white matter includes

Answer 8

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

Question 9

3 major groups of commissural tracts

Answer 9

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

Question 10

3 basal nuclei

Answer 10

globus pallidus
putamen
caudate nucleus

Question 11

What do basal nucleis

Answer 11

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

Question 12

basal nuclei function

Answer 12

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)

Question 13

Dysfunction of circuits between basal nuclei + limbic system

Answer 13

Perkinson’s disease
schizophrenia
obsessive compulsive disorder
chronic anxiety

Question 14

Limbic system

Answer 14

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

Question 15

limbic lobe has

Answer 15

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