Thread: CNS confusion
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Old Sunday, January 06, 2013
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Cerebrum:

The Cerebrum is part of the fore-brain that includes the cerebral cortex. It is the largest part of the human brain, consisting of the four lobes of the brain.Each lobe carries many different responsibilities :

1.Frontal lobe- reasoning, planning, emotions, speech, and movements
2.Parietal lobe-orientation, recognition, stimuli
3.Occipital lobe-visual processing
4.Temporal lobe-memory, speech, auditory stimuli, and perception and recognition.


Cerebral Cortex:

The cerebral cortex is the outer outer layer of gray matter in the cerebrum.It consists mainly of neuronal cell bodies and dendrites in humans; associated with higher functions, including language and abstract thought.

Midbrain (mesencephalon):

The midbrain is located below the cerebral cortex, and above the hindbrain . It comprises :


  • Tectum (corpora quadrigemina)
Inferior colliculi -have an auditory function
Superior colliculi-have a visual function
  • Cerebral peduncle-contains many nerve tracts conveying motor information to and from the brain to the rest of the body.
Midbrain tegmentum-forms the floor of the midbrain that surrounds the cerebral aqueduct.
Crus cerebri-anterior portion of the cerebral peduncle which contains the motor tracts
Substantia nigra-black substance; plays an important role in reward, addiction, and movement.
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