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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.

Related tags

Cerebrospinal FluidBrain ProtectionCentral Nervous SystemControl And CoordinationWorld Of LivingScienceClass 10 Mcq

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