The Circulatory & Respiratory System

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

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

Which system works closely with the respiratory system?

• skeletal system
• circulatory system
• excretory system
• digestive system

What are the main organs of the respiratory system?

• muscles
• lungs
• nose and mouth
• bronchi

What is the main function of the heart ? 

• The heart circulates blood and oxygen throughout the body.
  
• The heart is the control centers for all body activities.
• The heart gets rid of the wastes in your body produced by homeostasis. 
• The heart adds oxygen to the blood

What is the main organ in the circulatory system?

• vein
• lung
• heart
• aorta 

Carry blood away from heart; mostly oxygen-rich

• Arteries
• Veins
• Capillaries

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

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

• bronchi
• lungs
• oxygen
• alveoli

The circulatory system consists of the heart, blood vessels and...

• blood

• oxygen

• nutrients

• cells

What is included in the circulatory system?

Select ALL that apply.

• veins

• capillaries

• heart

• arteries