Explain the structure of brain.
The brain is the main control centre of the nervous system. It is enclosed within the bony shell of cranium. It consists of three main parts:
- Cerebrum: It is the uppermost and largest part with many ridges and grooves. It is divided into right and left halves called cerebral hemispheres. It controls our thinking, reasoning, intelligence, memory and perception of pain, sound, touch, taste and smell.
- Cerebellum: It is located under the cerebrum at the back of the head. It maintains balance of the body and coordinates muscular activity.
- Brain stem (medulla oblongata): It joins the brain to the spinal cord. It controls the activity of internal organs i like heartbeat and breathing.
Concept: Central Nervous System (CNS)
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