1.Which part of the skeleton protects the heart and lungs?
The skullThe kneecapThe rib cageThe pelvis
2.What is the main job of red blood cells?
Carry dissolved nutrients, hormones and wasteHelp the blood to clot at a cutFight germs and infectionsCarry oxygen around the body
3.What is the main job of the liver?
Make bile and break down harmful substancesFilter the blood and make urineMix food with acid and enzymes to start digesting proteinsAbsorb digested food into the blood
4.What is the main job of the lungs?
Filter the blood and make urineMix food with acid and enzymes to start digesting proteinsPump blood around the bodyTake in oxygen and get rid of carbon dioxide
5.Which organs filter the blood and make urine?
Small intestineKidneysLungsStomach
6.What is the main job of platelets?
Carry dissolved nutrients, hormones and wasteHelp the blood to clot at a cutCarry oxygen around the bodyFight germs and infections
7.Which organ uses acid and enzymes to start digesting proteins?
LungsKidneysStomachLiver
8.What is the main job of plasma?
Carry oxygen around the bodyCarry dissolved nutrients, hormones and wasteFight germs and infectionsHelp the blood to clot at a cut
9.What carries messages between the brain and the rest of the body?
TendonsArteriesNervesBones
10.What is the main job of white blood cells?
Fight germs and infectionsHelp the blood to clot at a cutCarry dissolved nutrients, hormones and wasteCarry oxygen around the body
