What hard structures in your body help you stand up and protect your organs?
What are the bones.
What organ controls your entire body?
What is the brain.
What is the starting organ for the digestive system?
What is the mouth.
What organ do you use to breathe?
What are the lungs.
What organ pumps blood throughout your body?
What is the heart.
What do your muscles help your body to do?
What is to move.
What is the place where two bones meet called?
What are the joints.
What are the “message pathways” that carry signals through your body?
What are the nerves.
What is the long tube that moves food down into the stomach called?
What is the esophagus.
What gas do you breathe in that your body needs?
What is oxygen.
What liquid carries oxygen and nutrients around your body?
What is blood.
What type of muscles attach to the bones?
What are the skeletal muscles?
What mineral makes bones strong?
What is calcium.
What part of the nervous system runs down your back and connects your brain to your body?
What is the spinal cord.
What organ is responsible for absorbing most nutrients from food?
What is the small intestine.
What tube carries air from your throat to your lungs?
What is the trachea (windpipe).
What are the blood vessels that carry blood away from the heart called?
What are the arteries.
What are the muscles that we cannot control called?
What are the smooth muscles.
What is the name of the largest bone in the human body?
What is the femur.
Describe what a reflex is.
What is a quick, automatic response to something (like pulling your hand away from heat).
What acid‑filled organ churns food into a liquid?
What is the stomach.
What tiny air sacs in the lungs exchange oxygen and carbon dioxide?
What are the alveoli.
What part of the blood carries oxygen?
What are the red blood cells.
What is the strongest muscle in our body?
heart
What are the 3 purposes of the skeletal system?
Why is the nervous system important for all other body systems?
What is it controls and coordinates their actions by sending and receiving signals.
Why does the digestive system need the circulatory system?
What is to carry nutrients from the intestines to the rest of the body.
How does the diaphragm help you breathe?
What is it moves down to pull air in and moves up to push air out.
Why does your heart beat faster during exercise?
What is to deliver more oxygen and nutrients to your muscles.
Why do many muscles need to work in pairs?
Because one muscle pulls while the other relaxes, allowing movement in opposite directions.