# 3Multiple ChoiceWhat is the main function of a skeleton in an animal's body?To help them flyTo protect important organs and give shapeTo help them swim fasterTo digest food
# 7Multiple ChoiceThe spine, also known as the backbone, is made up of many small bones called:RibsVertebraeFemursHumerus
# 8Multiple ChoiceWhich bones are found in your lower leg?Radius and UlnaTibia and FibulaFemurHumerus
# 9Multiple ChoiceWhat are the two bones in your upper arm called?Tibia and FibulaFemurHumerusRadius and Ulna
# 10Multiple ChoiceWhen you bend your arm, which muscle in your upper arm contracts (tightens)?TricepsBicepsQuadricepsHamstrings
# 11Multiple ChoiceWhen you bend your arm, which muscle in your upper arm relaxes?BicepsTricepsDeltoidPectoral
# 12Multiple ChoiceWhen you straighten your arm, which muscle in your upper arm contracts?BicepsTricepsBiceps and TricepsNone of the above
# 13Multiple ChoiceWhen you straighten your arm, which muscle in your upper arm relaxes?TricepsBicepsQuadricepsHamstrings
# 14Multiple ChoiceWhich part of the skeleton provides support for your body and allows you to stand upright?Rib cageSkullSpineHip bone
# 15Multiple ChoiceThe hip bone is important for:Protecting the brainConnecting the legs to the torsoProtecting the lungsAllowing you to bend your elbow