Advertisement Remove all ads

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

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

(i) Name the parts labelled A, B and C in the diagram.
(ii) State the main functions of the parts labelled A and B.

(iii) What are the structural and functional units of the brain? How are the parts of these units arranged in A and C?
(iv) Mention the collective term for the membranes covering the brain.
(v) What is the function of Cerebrospinal fluid?

Advertisement Remove all ads

Solution

(i) A – Cerebrum, B – Cerebellum, C – Medulla oblongata
(ii)

  • A (Cerebrum) – It is the site of intelligence, memory and consciousness.
  • B (Cerebellum) – Coordinates muscular activity and hence helps in balancing the body.

(iii) Neurons are the structural and functional units of the brain.

  • In A (Cerebrum), the outer portion contains cell bodies and the inner portion contains the axons of the neurons. 
  • In C (Medulla oblongata), the outer portion contains axons and the inner portion contains the cell bodies of the neurons.

(iv) Meningitis
(v) Cerebrospinal fluid acts as a cushion and protects the brain from mechanical shocks. 

  Is there an error in this question or solution?
Advertisement Remove all ads
Advertisement Remove all ads
Advertisement Remove all ads
Share
Notifications

View all notifications


      Forgot password?
View in app×