Juli Science

1. What is the system that help us breathe?

• Respiratory System

• Excretion System

• Circulatory System

• Digestive System

The first body part the air rushes into when we breathe in.

• Lungs

• Windpipe

• Air sacs

• Nose

After the air passes through our nose, it goes down our

• Lungs

• Windpipe

• Air sacs

• Nose

The air branches to the left and right into two smaller....

• Lungs

• Windpipe

• Air tubes

• Nose

The air tubes lead to our _____ that are filled with tiny air sacs.

• Lungs

• Air sacs

• Air tubes

• Nose

Responsible for carrying in the oxygen from the air we breathe into our blood, and carrying out the carbon dioxide from our blood, OUT of our body.

• Lungs

• Air sacs

• Air tubes

• Nose

When we breathe in or INHALE our lungs and ribcage

• Expands and moves outwards and upwards

• Contracts and moves downward and inwards

When we breathe out or EXHALE our lungs and ribcage

• Expands and moves outwards and upwards

• Contracts and moves downward and inwards

Our respiratory system is in charge of bringing in oxygen to our blood flow so our body can use it as energy

• False

• True

The flat muscle that pulls and pushes the lungs.

• Trachea

• Bronchi

• Bronchioles

• Diaphragm