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Nervous System

Recognizes and coordinates the bodys response to changes in its internal and external environments

Integumentary System

Barrier against infection and injury; helps regulate body temp; provides protection against sun radiation

Respiratory System

Provides oxygen needed for cellular respiration and removes excess carbon dioxide from the body

Digestive System

Converts foods into simpler molecules that cane be used by the cells of the body; absorbs food; eliminates wastes

Excretory System

Eliminates waste products from the body in ways that maintain homeostasis

Skeletal System

Supports the body; protects internal organs; allows movement; serves as a site for blood cell formation; stores mineral reserves

Muscular System

Works with the skeletal system to produce voluntary movement; helps to circulate blood and move food through the digestive system

Circulatory System

Brings oxygen, nutrients, and hormones to cells; fights infection; removes cell wastes; helps regulate body temp

Endocrine System

Controls growth/development/metabolism; maintains homeostasis

Reproductive System

Produces reproductive cells; in females, nurtures and protects developing embryo

Lymphatic/Immune System

Helps protect the body from disease; collects fluid lost from blood vessels and returns the fluid to the circulatory system

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