Respiratory & Circulatory System

The air sacs that are covered with capillaries where gas exchange takes place

• bronchi
• lungs
• oxygen
• alveoli

When you breathe, your lungs take in ___ and remove ___. 

• air/oxygen
• oxygen/carbon dioxide 
• carbon dioxide/waste 
• waste/air 

What is the main function of the respiratory system?

• to provide oxygen and remove carbon dioxide from the body
• to bring oxygen to the body
• to break down food and absorb nutrients
• to remove oxygen from the body and deliver carbon dioxide

Which number is pointing to the trachea?

• 7

• 6

• 9

• 4

Which number is pointing to the diaphragm?

• 8

• 7

• 6

• 5

The blue tubes that branch from the trachea are called ____.

• bronchi

• alveoli

• larnyx

• throat

In which part of the lung does gas exchange occur?

• bronchus

• trachea

• bronchiole

• alveoli

What is the function of the bronchi?

• Transport air from nose to lungs
• Transport air from trachea to lungs
• Transport air from lungs to alveoli
• Transport air from alveoli to blood

What is the function of the diaphragm?

• the muscle that contracts and relaxes when you breathe

• the muscle that regulates your heart beat

• no function

The main function of the circulatory system is 

• To give the body structure and support
• Excrete waste
• transport blood, nutrients, and gases throughout the body
• to transport messages from the body to the brain