Cells to Body Systems Part 6

Question 1

• Tiny air sacs in the lung where the exchange of carbon dioxide for oxygen takes place
• Only one cell thick
• Surrounded by capillaries

Answer 1

Alveoli

Question 2

A group of organs and tissues that exchange oxygen and carbon dioxide between the body and the environment

Answer 2

Respiratory system

Question 3

• Breathe (body gets oxygen)
• Tiny hairs in nose filter air
• Capillaries in nasal passage warm the air
• Warm air travels down trachea

Answer 3

Breathing process

Question 4

• Windpipe
• Branches into two large tubes called bronchi
• Leads to lungs

Answer 4

Trachea

Question 5

• The main organ of the respiratory system
• Bronchi branch into smaller and smaller tubes

Answer 5

Lungs