How can we help?

You can also find more resources in our Help Center.

12 terms

12 Major Organ Systems

Systems throughout the body.
Integumentary System
skin, hair, nails
covers the body; regulates body temp; creates structures for sensation.
Skeletal System
basic framework of the body
protects & supports
bones, joints, cartilage
Muscular System
skeletal muscles attach to bones; maintains posture; helps us move
Nervous System
brain, spinal cord, nerves & sensory organs
Endocrine System
contains glands that secrete hormones; chemical substances regulate body activities
Circulatory System
blood, heart & blood vessels
pumps/transports blood; carries to all body cells; carries waste away from cells
Lymphatic System
lymph nodes, lymphatic vessels, lymph & other lymphoid organs
fluid balance; defense against pathogens & other foreign material
Immune System
an elaborate defense system; protects from pathogens, allergens & our own cells that have gone awry. (cancer cells)
Respiratory System
lungs & other structures that carry/conduct air to & from lungs
Digestive System
made up of organs designed to ingest food
breaks food down into substance that can be absorbed; eliminates the rest as waste
Urinary System
kidneys & other structures
helps excrete waste; controls water & electrolyte balance in the body
Reproductive System
organs & structures that enable humans to reproduce