7th Grade Respiratory System

Which 2 parts of the respiratory system take in oxygen?

• nose and mouth

• mouth and tongue

• ear and nose

• tongue and cheek

Which part of the respiratory system connects the mouth and nose to the lungs?

• mouth

• bronchi

• trachea

• pharynx

How many times do you breath a day?

• 50,000

• 20,000

• 30,000

• 40,000

What is released from your body as you take in oxygen?

• blood

• carbon dioxide

• sulfuric acid

• hydrogen molecules

What organ is the main part of the respiratory system?

• lungs

• heart

• trachea

• nose

When you take in oxygen it is known as _____________.

• exhalation

• respiration

• transpiration

• inhalation

When you breathe out carbon dioxide it is known as ____________.

• transpiration

• exhalation

• respiration

• inhalation

Together breathing in oxygen and exhaling carbon dioxide is known as ________________.

• inhalation

• transpiration

• exhalation

• respiration

What keeps the trachea or windpipe open?

• your hands

• ligaments

• muscles

• cartilage

Where does oxygen end up after it goes through the bronchioles?

• lungs

• alveoli

• bronchi

• diaphragm