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Question

Describe the structure and function of the cerebrum.


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Solution

Cerebrum:

  1. The cerebrum is the largest part of the brain.
  2. The left and right cerebral hemispheres are the two halves that the cerebrum is divided into longitudinally by a deep fissure.
  3. The corpus callosum, a network of nerve fibers, connects the hemispheres.
  4. The cerebral cortex is a layer of cells that covers the cerebral hemisphere and is characterized by folds.
  5. Due to its grayish color, the cerebral cortex is referred to as the "grey matter." Here, the concentration of neuron cell bodies provides the color.
  6. The inner portion of the cerebral hemisphere is made up of fibers of the tracts that are wrapped in the myelin sheath. They give the layer an impenetrable white appearance, hence the name "white matter."

Four lobes of the cerebrum:

  1. Frontal lobe: Associated with parts functioning in planning, solving problems, and movements.
  2. Parietal lobe: Help in movements and perception of stimuli.
  3. Occipital lobe: Processing visual images.
  4. Temporal lobe: Related to perception and recognition of auditory stimuli.

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