Central Nervous System (CNS) Components:
• The CNS comprises two primary structures: the Brain and the Spinal Cord.
• Protective mechanisms: The brain is encased within the cranium (skull) and cushioned by cerebrospinal fluid (CSF) against impacts.
• The spinal cord is safeguarded by the vertebral column (spine) and is also bathed in cerebrospinal fluid (CSF), serving as a shock-absorbing medium.
Copy the diagram given below. 
(a) Name the structure.
(b) Label Gray matter and White matter.
Karan was standing on a high stool and cleaning the ceiling fan.
He suddenly loses balance and sustains a head injury. An examination reveals that his pupils have lost the capacity to constrict in bright light. Which structure has been damaged?
Bharat woke up late in the morning and missed the school bus.
This situation stimulated the nerves of the sympathetic system which resulted in: 