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An Organ System Overview
Levels of Structural OrganizationLevels of Structural Organization
Molecular
Body CoveringBody Covering - - The skin you’re in!The skin you’re in!
• Integumentary
• Forms the external body covering
• Protects deeper tissue from injury
• Synthesizes vitamin D
• Location of cutaneous nerve receptors
Support and MovementSupport and Movement – – dem Bones!dem Bones!
• Skeletal
• Protects and supports body organs
• Provides muscle attachment for movement
• Site of blood cell formation
• Stores minerals
Support and Movement – Support and Movement – feel the groove!feel the groove!
• Muscular
• Allows locomotion
• Maintains posture
• Produces heat
Integration and CoordinationIntegration and Coordination
• Nervous
• Fast-acting control system
• Responds to internal and external change
• Activates muscles and glands
Integration and CoordinationIntegration and Coordination
• Endocrine
• Secretes regulatory hormones
• Growth
• Reproduction
• Metabolism
Transport – Transport – the super Highways!the super Highways!
• Cardiovascular
• Transports materials in body via blood pumped by heart
• Oxygen
• Carbon dioxide
• Nutrients
• Wastes
Transport - Transport - the super highways!the super highways!
• Lymphatic
• Returns fluids to blood vessels
• Disposes of debris
• Involved in immunity
• Digestive
• Breaks down food
• Allows for nutrient absorption into blood
• Eliminates indigestible material
Absorption and ExcretionAbsorption and Excretion
Absorption and ExcretionAbsorption and Excretion
• Respiratory
• Keeps blood supplied with oxygen
• Removes carbon dioxide
• Urinary
• Eliminates nitrogenous wastes
• Maintains acid – base balance
• Regulation of materials
•Water
• Electrolytes
Absorption and ExcretionAbsorption and Excretion
ReproductionReproduction
• Reproductive
• Production of offspring
Movement – change in position; motion
Responsiveness – reaction to a change
Growth – increase in body size; no change in shape
Respiration – obtaining oxygen; removing carbon dioxide; releasing energy from foods
Reproduction – production of new organisms and new cells
Characteristics of LifeCharacteristics of LifeTraits shared by all organismsTraits shared by all organisms
15
Absorption – passage of substances through membranes and into body fluids
Circulation – movement of substances in body fluids
Assimilation – changing of absorbed substances into chemically different forms
Excretion – removal of wastes produced by metabolic reactions
Digestion – breakdown of food substances into simpler forms
Characteristics of LifeCharacteristics of LifeTraits shared by all organismsTraits shared by all organisms
The Organ System Matching Game!!The Organ System Matching Game!!Match the organ systems that work together
Digestive System
Skeletal System
Respiratory System Muscular System
Urinary System
Circulatory System
Endocrine System
Reproductive System
All systems work together to maintain life.