Class 5 Science Question Answers - Nervous System

Q1: What is the main organ of the nervous system?
Ans: The main organ of the nervous system is the brain.

Q2: Which part of the brain controls sense organs and intelligence?
Ans: The cerebrum is the part of the brain responsible for controlling the sense organs and is also associated with intelligence.

Q3: What is the function of the cerebellum?
Ans:  The cerebellum plays a crucial role in the body's ability to maintain coordination and balance.

Q4: What is another name for the medulla oblongata?
Ans: Another name for the medulla oblongata is the brain stem.

Q5: Where is the spinal cord located in the body?
Ans: The spinal cord is located within the backbone, also known as the vertebral column. 

Q6: What do nerves carry messages between?
Ans: Nerves carry messages between the brain and various body parts.

Q7: Which nerves carry messages from sense organs to the brain?
Ans: Sensory nerves are responsible for carrying messages from sense organs to the brain.

Q8: What kind of actions are controlled by the spinal cord without involving the brain?
Ans: Reflex actions are actions that are controlled by the spinal cord without involving the brain.

Q9: What happens when you touch a sharp object due to a reflex action?
Ans: When you touch a sharp object, a reflex action is triggered. This causes your hand to move away quickly to protect yourself from injury.

Q10: What is the fluid that surrounds and protects the brain inside the skull?
Ans: The fluid that surrounds and protects the brain inside the skull is known as cerebrospinal fluid. 

Q11: Which part of the brain controls emotions?
Ans: The part of the brain that primarily controls emotions is the cerebrum. 

Q12: What is the average weight of the brain?
Ans: The average weight of the human brain is approximately 1.5 kg. 

Q13: What is the role of motor nerves?
Ans: Make muscles move

Q14: Where do nerves from the head and neck connect directly?
Ans: Nerves from the head and neck connect directly to the brain.

Q15: What does the nervous system help us do?
Ans: See, think, learn, feel, respond, etc.