B.12(A)

During gas exchange what enters from alveoli to the capillaries?

• CO₂

• CO

• O₂

• nitrogen

Tags

NGSS.HS-LS2-3

NGSS.HS-LS2-5

Label A is...

• Trachea
• Diagphragm
• Bronchus
• Alveolus

What are the names of the air sacs in the lungs where gas exchange takes place?

• Alveoli
• Bronchi
• Bronchioles
• Intercostal muscles

Label B is...

• Trachea
• Diagphragm
• Bronchus
• Alveolus

Label C is...

• Trachea
• Diagphragm
• Bronchus
• Alveolus

Label D is...

• Trachea
• Diagphragm
• Bronchus
• Alveolus

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

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

• air/oxygen

• oxygen/carbon dioxide

• carbon dioxide/waste

• waste/air

Which of the following are features of the alveoli that adapt them to gas exchange?

I. High surface area

II. Thin walls

III. Dry surfaces

• I and II only

• I only

• II and III

• I, II, and III

Given the following structures:

1. alveoli

2. bronchi

3. bronchioles

Which of the following is the correct order in which air would flow after inhalation?

• 1,2,3

• 2,1,3

• 2,3,1

• 3,2,1