Human Body

The muscular and skeletal systems of the human body work together to-

• fight infections

• circulate blood

• allow motion

• digest food

The skeletal system is made of bone that-

• provides support

• protects the body from diseases

• carries blood

• moves the body around by flexing and relaxing

Muscles move the body when they-

• contract and relax

• heat up and cool down

• take in water

• twist and turn

Muscles can make parts of the body move because muscles

• don't need energy from food

• are attached to bones

• get warmer as thy work

• are long and thin

The biggest organ in the human body is the-

• stomach

• heart

• liver

• skin

The skin keeps humans healthy because it-

• protects

• bends

• supports

• grows

The skin has nerve receptors. What do these nerve receptors send to the brain?

• food

• light

• messages

• blood

Human skin helps the body most in-

• finding food

• staying warm

• hiding from danger

• making blood

How are bones and joints related?

• joints allow bones to move

• they protect bones

• to support muscles

What is the purpose of the bones in an arm?

• to support muscles

• to move

• to carry blood