: These are your body’s essential units. Illness often starts here, where cellular damage or genetic mutations can ripple outward to affect entire organs.
: The Cardiovascular system pumps oxygen and nutrients, while the Respiratory system handles gas exchange. The Human Body in Health and Illness
: Long-term disruptions like hypertension or diabetes, often influenced by genetics or lifestyle. : These are your body’s essential units
When healthy, your body systems act like specialized departments in a company: The Human Body in Health and Illness