Organ Systems Vocabulary

Science · Organisms & Life Processes · ages 9-11

Name ______________________ Date ____________

Which system brings oxygen into your body and removes carbon dioxide?
- Skeletal system
- Respiratory system
- Muscular system
Which of these is an organ that pumps blood through your body?
- Heart
- Blood
- Oxygen
The respiratory system's job is to bring oxygen into your blood and remove carbon dioxide.
Circle one: True False
Which organ uses enzymes to break down food into nutrients your body can absorb?
- Stomach
- Heart
- Lungs
This diagram shows blood leaving the heart. Which type of blood vessel carries it away from the heart?
- Vein
- Capillary
- Artery
Which organs work with your muscles to support and move your body?
- Lungs
- Bones
- Blood vessels
A doctor presses two fingers on your wrist and feels a pulse of blood moving away from your heart. Which type of blood vessel is she most likely feeling?
- Artery
- Capillary
- Vein
Maya wrote: 'My stomach is part of my respiratory system because it helps me breathe.' What is wrong with her sentence?
- The stomach is part of the skeletal system
- Nothing is wrong with her sentence
- The stomach is part of the digestive system, not the respiratory system

Answer key

For grown-ups. Fold this page away before handing over the rest.

Respiratory system · The respiratory system brings in oxygen when you breathe in and removes carbon dioxide when you breathe out.
Heart · The heart is an organ that pumps blood. Blood and oxygen are carried around the body, but they are not organs themselves.
True · That's exactly what your lungs do as part of the respiratory system.
Stomach · The stomach is an organ in the digestive system. It uses enzymes to break food into nutrients.
Artery · Arteries always carry blood away from the heart. Veins carry it back.
Bones · Bones make up the skeletal system. It works with the muscular system to support and move your body.
Artery · Arteries carry blood away from the heart under higher pressure, which is why you can feel a pulse in them.
The stomach is part of the digestive system, not the respiratory system · The stomach digests food as part of the digestive system. The lungs handle breathing as part of the respiratory system.