Organ systems - (brief description on major functions + integration)

What is functional integration

• All organ systems work together; body cells are interdependent to maintain life functions

Why are body cells interdependent

• No cell can meet all its needs alone; they rely on organ systems to supply nutrients, oxygen, and waste removal

Digestive system — major function

• Takes in food

• Breaks it into nutrients

• Eliminates undigested waste

Respiratory system — major function

• Takes in oxygen and removes carbon dioxide

Cardiovascular system — major function

• Distributes oxygen and nutrients via blood

• Carries CO₂ and wastes to disposal organs

Urinary system — major function

• Eliminates nitrogenous wastes and excess ions

• Maintains fluid and electrolyte balance

Integumentary system — major function

• Protects the body from the external environment; prevents dehydration

How do the digestive + cardiovascular systems integrate

• Digestive absorbs nutrients; cardiovascular delivers them to cells

How do the respiratory + cardiovascular systems integrate

• Respiratory provides oxygen; cardiovascular transports it and removes CO₂

How do the cardiovascular + urinary systems integrate

• Cardiovascular delivers blood; urinary filters wastes and maintains balance

How does the integumentary system support other systems

• Provides protection and helps regulate body temperature

How do the digestive + urinary systems integrate

• Digestive absorbs nutrients; urinary removes metabolic wastes from those nutrients

How do the digestive + respiratory systems integrate

• Digestive provides nutrients; respiratory provides oxygen needed to release energy from those nutrients

How do the cardiovascular + respiratory systems integrate

• Respiratory loads blood with oxygen; cardiovascular delivers that oxygen and removes CO₂

How do the respiratory + urinary systems integrate

• Respiratory removes CO₂; urinary removes other metabolic wastes to maintain internal balance