Describe the structure and function of cerebrum


Human brain

The cerebrum is the largest part of the brain. It consists of the cerebral cortex and other subcortical structures. It is composed of two cerebral hemispheres that are joined together by heavy, dense bands of fibre called the corpus callosum. The cerebrum is further divided into four sections they are

  1. Frontal lobe: It is associated with parts of speech, planning, reasoning, problem-solving and movements.
  2. Parietal lobe: Help in movements, the perception of stimuli and orientation.
  3. Occipital lobe: It is related to visual processing.
  4. Temporal lobe: This region is related to perception and recognition of memory, auditory stimuli, and speech.

The exterior portion of the cerebrum is called the cortex or the cerebral mantle. The cortex is extremely convoluted, due to which, it has a large surface area. The cerebrum also includes

  • Sensory areas: To receive the messages
  • Association areas: These areas integrate the incoming sensory information. It also forms a connection between sensory and motor areas.
  • Motor areas: This area is responsible for the action of the voluntary muscles.

Functions of the cerebrum:

1. The cerebrum is responsible for thinking, intelligence, consciousness and memory.

2. It is also responsible for interpreting touch, hearing and vision.

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