Body System

What are the main organs in the respiratory system?

• heart

• lungs

• stomach

• intestines

Our lungs ...

• breathe in oxygen and breathe out carbon dioxide.

• breathe in carbo.

• breathe in helium and breathe out oxygen.

• breathe in oxygen and breathe out helium.

What is another word for your windpipe?

• esophagus

• sinuses

• trachea

• alveoli

Your _______ is a muscle connected to the bottom of your lungs that helps your lungs expand and contract when you breathe.

• esophagus

• alveoli

• trachea

• diaphragm

This human body system is a series of organs responsible for taking in oxygen and expelling carbon dioxide.

• nervous system

• integumentary system

• respiratory system

• excretory system

Which body system converts food into simpler substances for the body to absorb as nutrients?

• Digestive system

• Excretory system

• Circulatory system

• Muscular system

The main function of the circulatory system is to -

• support and protect delicate organs such as the brain, lungs, and hear

• protect the body against invading organisms and infectious diseases

• pump oxygen and nutrients through the blood to every part of the body

• coordinate all actions and reactions of the body using electrical signals

The ____________ is a muscular organ that pumps blood to the body through blood vessels. 

• vein 

• artery 

• heart

_________ are absorbed into the blood.

• saliva

• gastric juices

• bile

• nutrients

Which organ squeezes and mixes your food into a mushy liquid?

• mouth

• stomach

• large intestine

• small intestine