Respiratory System
This gas enters the body when we breathe.
Oxygen
This circulation goes from the heart to the lungs and back.
Pulmonary circulation
The liquid part of the blood.
Plasma
The urine travels from the kidneys to the bladder through these tubes.
Ureters
Drinking plenty of this helps digestion and prevents constipation.
Water
Gas exchange occurs in these tiny lung structures, like air sacks.
Alveoli
The blood vessel that carries oxygenated blood from the heart to the body.
Aorta
Plasma transports nutrients and these gases.
Oxygen and carbon dioxide
The organ where urine is stored before it leaves the body.
Bladder
Eating this nutrient helps eliminate faeces.
Fibre
These are the two respiratory movements.
Inhalation and exhalation
These blood vessels reach all the cells.
Capillaries
These cells defend the body from infections.
White blood cells
This organ filters the blood to form urine.
Eating too much of these can block the arteries.
Fats
During inhalation, the diaphragm moves this direction.
Down
These blood vessels enter the atria (heart).
Veins
Blood is located inside the heart and these vessels.
Blood vessels (arteries, veins, capillaries)
The tube that expels urine out of the body.
Urethra
These tubes can get blocked with too much fat.
Arteries
These structures get smaller during exhalation.
The lungs and ribcage
This type of blood cell transports oxygen.
Red blood cells
Blood is made up of plasma and ...
Blood cells
The urinary system produces, stores, and eliminates this liquid.
Urine
Reducing harmful drugs prevents these serious consequences.
Deadly diseases / Addition