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where is the cerebral cortex, and what does it consist of
The cerebralcortex is the outer layer folded grey matter of the brain and consists of cellbodies, dendrites and unmyelinated axons
how are the two hemispheres of the brain seperated
what is the importance of this structure
by the corpus callosum
contains fibresthat project into the white matter of both hemispheres, this allowscommunication between the two.
what does the left hemisphere of the brain do
left hemispherecontrols the right side of the body.
Left hemisphere deals with verbal info.
Left(usually) contains the apparatus that deals with expressive speech andcomprehension
Leftappears to deal with arithmetic ension
Left deals with linear reasoning nsion
what does the right hemisphere of the brain do
Right hemisphere controls the left side of the body
Rightwith spatial information
Rightdeals with nonverbal aspects of communication
Right deals with number estimation
Right deals with wider holistic problem solving.
what are the 4 main brain regions and where are they
what are the subregions of the frontal region
Starting fromthe back we have the motor, premotor and supplementary motor areas (SMA).
We also have theinferior frontal cortex (inferior frontal gyrus) which deals with language.
Finally we havethe prefrontal cortex which is divided into dorsolateral, ventromedial andorbital.
what does damage of the motor areas of the frontal cortex lead to
difficultieswith voluntary motor activity of the limbs (more medial = affect the lower limb. more lateral = affect the upper limb)
what part of the brain is likely damaged when there is weakness of the left upper limb
so weakness in left upper limb, damage is right hemisphere, lateral side of primary motor areas of frontal lobe
what does the premotal area do
appearsto provide voluntary motor activity to the trunk
what does the supplementarymotor areas (SMA) do
has a role in morecomplex and bimanual movements
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