Human Body Anatomy: Integrated Systems & Physiological Health

In the human body, health is maintained through the interconnectedness of organ systems, proper posture, and stable biochemical metabolism.

A doctor examines a mature woman's arm in the doctor's office

Diseases Relating to Myelin Sheath

Nerve cells send signals along long wires called axons, which are insulated with a fatty substance called myelin. The myelin sheath allows signals to be transmitted rapidly from the nervous system to the rest of the body. When myelin is destroyed -- called demyelination -- nerve signals are slowed or stopped.

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