Which fluid gives extra protection to the brain along with the skull?
Answer and explanation
Correct answer: Cerebrospinal fluid
The governing concept is physical protection of the central nervous system. The skull forms a hard bony covering, while cerebrospinal fluid surrounds the brain and spinal cord within their protective membranes. This fluid cushions the nervous tissue, helps absorb shocks, and provides a stable surrounding medium. Therefore option A is correct. Bile aids fat digestion, saliva begins digestion, and blood sugar is a nutrient level rather than a protective fluid.
Frequently asked questions
What is the correct answer to this question?
Cerebrospinal fluid
Why is this the correct answer?
The governing concept is physical protection of the central nervous system. The skull forms a hard bony covering, while cerebrospinal fluid surrounds the brain and spinal cord within their protective membranes. This fluid cushions the nervous tissue, helps absorb shocks, and provides a stable surrounding medium. Therefore option A is correct. Bile aids fat digestion, saliva begins digestion, and blood sugar is a nutrient level rather than a protective fluid.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: World of Living. Topic: Control and Coordination.
