Organs and Body Systems

In multicellular organisms, the body is a system of many organ systems that work together. Organ systems are groups of cells that form tissues and organs that are specialized for particular body functions.

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NGSS.MS-LS1-3

This organ system is a passageway that includes the heart, blood vessels, and blood.

• skeletal system

• muscular system

• cardiovascular (circulatory) system

• nervous system

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NGSS.MS-LS1-3

This organ system contains over 200 bones that hold the body together, give the body shape, and protect the body's organs and tissues.

• skeletal system

• muscular system

• cardiovascular (circulatory) system

• nervous system

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NGSS.MS-LS4-2

This organ system permits movement of the body and maintains posture.

• skeletal system

• muscular system

• cardiovascular (circulatory) system

• nervous system

This organ system is the body's communication system. This uses the brain, the spinal cord, and nerves to send and receive messages.

• skeletal system

• muscular system

• cardiovascular (circulatory) system

• nervous system

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NGSS.MS-LS1-3

This organ system is a 30 foot series of different organs that convert food to fuel or energy. This system includes the mouth, the esophagus, the stomach, the intestines and more.

• lymphatic (immune) system

• urinary (excretory or renal) system

• respiratory system

• digestive system

This organ system contains the kidneys, ureters, bladder and urethra. This system maintains electrolytes and filters waste from blood. Waste is sent through the blood vessels into the kidney and then expelled through urine.

• lymphatic (immune) system

• urinary (excretory or renal) system

• respiratory system

• digestive system

This organ system is a collection of nodes and vessels that help regulate the body's defenses. This system transmits information about infected areas of the body and sends out healing agents like white blood cells.

• lymphatic (immune) system

• urinary (excretory or renal) system

• respiratory system

• digestive system

This organ system is a group of passageways and organs that extract oxygen from the air. Lungs take in oxygen for the body to use and expel carbon dioxide.

• lymphatic (immune) system

• urinary (excretory or renal) system

• respiratory system

• digestive system

This organ system is a series of glands that help regulate the body's processes. This system produces hormones and other chemicals.

• reproductive system

• endocrine system

• respiratory system

• digestive system