Bones and Skeleton
What is the framework of bones that supports the body called?
The skeleton
What connects muscles to bones?
Tendons
What organ pumps blood throughout the body?
The heart
What organ do you use to breathe?
The lungs
What hard material makes up bones?
Calcium
What type of muscles move automatically without thinking?
What type of muscles move automatically without thinking?
What liquid carries nutrients and oxygen through the body?
Blood
What gas do we take in when we breathe?
Oxygen
Which part of the skeleton protects the brain?
The skull
What type of muscle makes up the heart?
Cardiac muscle
What tiny blood vessels connect arteries and veins?
Capillaries
What gas do we release when we exhale?
Carbon dioxide
What are the places where two or more bones meet?
Joints
What happens when a muscle shortens?
It contracts
Which side of the heart pumps oxygen-rich blood to the body?
The left side
What muscle helps move air in and out of the lungs?
The diaphragm
How do bones help the body move if they cannot move by themselves?
They are pulled by muscles attached to them
Which two muscles work together to move the arm up and down?
Biceps and triceps
What part of the blood carries oxygen?
Red blood cells
What small air sacs in the lungs exchange oxygen and carbon dioxide?
Alveoli