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

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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.