: Your body is a chemical factory. It breaks down fuel (nutrition) into energy (metabolism) to power every heartbeat and thought. 2. The Systems: Working in Harmony
: The Digestive and Urinary systems process fuel and filter out waste. 3. The Conflict: Illness and Dysfunction The Human Body in Health and Illness
Illness occurs when a system fails to perform its role or when external "invaders" (pathogens) disrupt the peace. : Your body is a chemical factory
: Vaccinations and regular check-ups to catch disruptions early. The Human Body in Health and Illness - E-Book: 7th edition The Human Body in Health and Illness
: These are your body’s essential units. Illness often starts here, where cellular damage or genetic mutations can ripple outward to affect entire organs.