Nerves · Nervous System · Easy

Brain

Meaning: The central organ of the nervous system, enclosed within the skull, responsible for thought, sensation, and control.

In practice: The human brain has approximately 86 billion neurons and weighs around 1.4 kg.

Quick check

Two questions on related nerves words.

Which word means: Weakness or paralysis of a cranial nerve resulting in loss of its motor function.

Which word means: Loss of the sense of smell caused by olfactory nerve damage.

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