Body Systems

Arteries carry blood from the heart around the body. 

• true

• false

Arteries carry the blood to the heart. 

• true

• false

The stomach muscles squeeze food to make it into a ball. 

• true

• false

ALL tissues in your body can contract and relax.

• true

• false

Bone marrow protects your brain and lungs.

• true

• false

The _____________ muscles work all the time. We don't control them. 

• cardiac

• skeletal

• big

• smooth

When we breathe in, air moves down the _______________.

• lungs

• windpipe

• mouth

• toes

Leukocytes are also known as 

• viruses

• red blood cells

• white blood cells

• antigens

Groups of organs work together to form _____________. 

• machines

• muscles

• bones

• body systems

Tags

NGSS.MS-LS1-3

The main job of the circulatory system is to: 

• protects other organs

• acts as the control center of your body

• helps your move, stand, run, jump, play and more

• deliver the oxygen in your blood to all parts of your body