Question

1. the white, fatty substance that insulates axons an

a. axon
b. cell body
c. myelin sheath
d. cerebral cortex

Explanation:

To solve this, we analyze each option:

• Option a: Axon is a part of a neuron that transmits signals, not the insulating substance.
• Option b: Cell Body contains the nucleus and organelles of the neuron, not an insulator.
• Option c: Myelin Sheath is a white, fatty substance that insulates axons to speed up signal transmission.
• Option d: Cerebral cortex is part of the brain, not related to insulating axons.

Answer:

c. Myelin Sheath