The digestive system breaks down food into nutrients the body can use.
The digestive system produces hormones.
The digestive system fights off infections and illnesses.
The digestive system controls body responses to changes.
The lymphatic system transports blood throughout the body.
The integumentary system transports blood throughout the body.
The circulatory system transports blood throughout the body.
The muscular system transports blood throughout the body.
The nervous system controls body responses to internal and external changes.
The endocrine system controls body responses.
The respiratory system controls body responses.
The reproductive system controls body responses.
The respiratory system removes waste products from the body.
The respiratory system produces hormones.
The respiratory system exchanges gases between the body and the environment.
The respiratory system supports body organs.
The excretory system supports and protects organs.
The skeletal system supports and protects body organs.
The circulatory system supports and protects organs.
The integumentary system supports and protects organs.
The muscular system regulates body temperature.
The muscular system allows movement and maintains posture.
The muscular system breaks down nutrients.
The muscular system exchanges gases.
The excretory system fights off infections.
The immune system fights off infections and illnesses.
The reproductive system fights infections.
The endocrine system fights infections.
The excretory system removes waste products from the body.
The excretory system produces hormones.
The excretory system provides oxygen to the blood.
The excretory system supports and protects organs.
The circulatory system regulates body temperature.
The integumentary system, which includes the skin, regulates temperature and protects tissues.
The respiratory system regulates body temperature.
The digestive system regulates body temperature.
The circulatory system produces hormones.
The immune system produces hormones.
The endocrine system is primarily responsible for hormone production.
The excretory system produces hormones.
The respiratory system transports blood, and the circulatory system fights infections.
The respiratory system provides oxygen to the blood, and the circulatory system delivers it to the body.
The circulatory system breaks down food, and the respiratory system exchanges gases.
The circulatory system supports organs, and the respiratory system controls body responses.
The reproductive system is responsible for producing offspring.
The digestive system is responsible for producing offspring.
The muscular system is responsible for producing offspring.
The integumentary system is responsible for producing offspring.
The lymphatic system exchanges gases between the body and the environment.
The lymphatic system provides structure and protection.
The lymphatic system returns excess tissue fluid to the bloodstream.
The lymphatic system allows movement and maintains posture.
The skeletal system provides structure and protects organs.
The skeletal system regulates body temperature.
The skeletal system exchanges gases.
The skeletal system removes waste products.
They work together to enable movement of the body.
They control body responses to changes.
They fight off infections and illnesses.
They regulate body temperature and protect tissues.