Cardiovascular / Circulatory system
Circulates blood around the body via the heart, arteries and veins, delivering oxygen and nutrients to organs and cells and carrying their waste products away.


Digestive system / Excretory system
Mechanical and chemical processes that provide nutrients via the mouth, esophagus, stomach and intestines.
Eliminates waste from the body.


Endocrine system
Provides chemical communications within the body using hormones.


Integumentary system/ Exocrine system
Skin, hair, nails, sweat and other exocrine glands.


Lymphatic system / Immune system
The system comprising a network of lymphatic vessels that carry a clear fluid called lymph.
Defends the body against disease-causing agents.


Muscular system/Skeletal system
Enables the body to move using muscles.
Bones supporting the body and its organs.


Nervous system
Collects and processes information from the senses via nerves and the brain and tells the muscles to contract to cause physical actions.


Renal system / Urinary system
The system where the kidneys filter blood.


Reproductive system
The sex organs required for the production of offspring.


Respiratory system
The lungs and the trachea that bring air into the body.