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ScienceBody Systems
The human body is a set of parts that specialise, and each part does something the others cannot. Below: the parts and their jobs, phrased the way textbooks phrase them.
Choose your difficulty
Pick a level to start playing. You can switch at any time.
How to play
Read the system or organ, then tap what it does.
Tip: your progress and best score are saved in this browser only.
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ScienceWhat you are actually practicing
The human body is a set of parts that specialise, and each part does something the others cannot. The heart pumps but does not filter, the lungs exchange gases but do not pump, the kidneys filter but do not exchange gases. Learning the pairing makes the whole map click.
The words below are the ones textbooks use, so recognising them also helps with any reading you do on the topic afterwards.
How the game works
You are shown a system or an organ and four possible jobs. Tap the right one. A wrong pick shows the answer immediately.
Easy covers the twelve major systems. Medium adds the individual organs. Hard uses the full list.
The links worth knowing
Transport and exchange: the circulatory system transports blood around the body. The respiratory system exchanges oxygen and carbon dioxide. The lymphatic system returns tissue fluid to the bloodstream.
Control and signalling: the nervous system carries signals between the brain and the body. The endocrine system releases hormones into the blood, which is a slower but longer-lasting kind of signalling.
Processing and waste: the digestive system breaks down food and absorbs nutrients. The excretory system removes metabolic waste, and the urinary system filters blood and produces urine.
Structure and movement: the skeletal system supports the body and protects the organs. The muscular system moves the bones. The integumentary system covers the body in skin.
Defence: the immune system defends the body against infection.
Individual organs: the liver filters blood and makes bile. The kidneys filter blood and produce urine. The lungs exchange gases with the air. The heart pumps blood through the body. The stomach churns food with acid. The cerebellum keeps balance and coordinates movement. The retina detects light, and the cochlea turns sound into nerve signals.
How to get faster
Group them by function rather than by location. Anything that transports something belongs with the blood and lymph, anything that regulates belongs with nerves and hormones, anything that breaks down or filters belongs with the digestive and urinary parts.
A note on overlaps
The excretory system and the urinary system overlap heavily, because the kidneys are the main organs of excretion. In these questions the excretory system is used for the general idea of removing waste, and the urinary system for the specific job of filtering blood into urine.