Respiratory system and breathing

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

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

Tags

NGSS.MS-LS1-2

NGSS.MS-LS1-3

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

• bronchi
• lungs
• oxygen
• alveoli

Tags

NGSS.HS-LS2-3

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

What is the site of gas exchange?

• alveoli

• nose

• lung

• bronchi

The division of the trachea forms

• nose

• main bronchi

• lungs

• alveoli

the windpipe; a passage through which air moves in the respiratory system.

• trachea

• lungs

• larynx

• bronchi

Which 2 substances are exchanged in the Respiratory System?

• oxygen and nitrogen
• carbon dioxide and oxygen
• oxygen and glucose
• glucose and carbon dioxide

When you exhale, the diaphragm

• moves upwards

• moves downwards

• flattens

• none of the above

The normal oxygen content of inhaled air is approximately

• 0.04%

• 21%

• 79%

• 100%

Tiny hairs that move particles in the nose are called

• mucus

• vocal cords

• cilia

• flagella