☯QuestioN :

What is the cerebrum ? state the functions of cerebrum?​

☯ANswer :

➳ Describing The structure of cerebrum:-

• The cerebrum is the largest part of the brain, 80-85% of the brain.
• A median fissure-divides cerebrum into two hemispheres which are connected by a thick band of fibres called corpus callosum.
• The outer part is cortex, while the inner part is medulla.
• The roof is called pallium, which is highly folded to form gyri and sulci, Sulci are depressions and gyri are ridges.
• Ventrolateral walls of the cerebrum are thick and called corpora striata.
• Sulci divides hemisphere into four lobes-frontal, parietal, occipital and temporal lobes.

➳ Describing the Functions of cerebrum:-

1. The cerebrum controls the voluntary activities.
2. It responds to vision, taste, smell, sound, touch, speech etc
3. Centre for micturition, defecation, weeping, laughing.
4. It is also the centre of memory, intelligence, will power, reasoning, learning.
5. Emotion, fear, pressure, temperature, feelings are controlled by cerebrum.

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Answer:

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.

Part of cerebrum

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.