The diagram given below is an external view of the human brain

The diagram given below is an external view of the human brain. Study the same and answer the questions that follow: 

1. Name the parts labelled A, B and C in the diagram.
2. State the main functions of the parts labelled A and B.
3. What are the structural and functional units of the brain? How are the parts of these units arranged in A and C?
4. Mention the collective term for the membranes covering the brain.
5. What is the function of Cerebrospinal fluid?

Answer

1. A – Cerebrum
    B – Cerebellum
   C – Spinal Cord
2. A – Seat of memory, intelligence, consciousness, will power, control voluntary actions, helps us to think, reason, invent, plan (Any one)
   B – Maintains body balance, posture, equilibrium, co-ordinates muscular activities (Any one)
3. Neurons / nerve cells
   A – Outer grey matter has cytons and inner white matter has axons.
   C – Outer white matter has axons and inner grey matter has cytons.
4. Meninges
5. Protects the brain / spinal cord from injuries and shocks