Which part of the human brain is responsible for:
(a) thinking
(b) picking up a pencil
(c) controlling blood pressure
(d) controlling hunger
(a) Thinking: The cerebrum handles thought, logic, and choices.
(b) Picking up a pencil: The cerebrum's motor cortex governs voluntary actions, such as picking up a pencil.
(c) Controlling blood pressure: The medulla oblongata regulates involuntary functions like blood pressure.
(d) Controlling hunger: The hypothalamus manages hunger and other bodily stability functions.
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: 