Respiratory System

Question 1

respiratory system parts

Answer 1

nasal cavity
mouth
pharynx
trachea (ciliated epithelial cells)
bronchus
lung
bronchioles
alveoli

Question 2

function of the respiratory system

Answer 2

takes on oxygen and releases carbon dioxide

Question 3

what is gas exchange?

Answer 3

gas exchange occurs at alveoli

• oxygen diffuses from alveoli to blood
• carbon dioxide diffuses from blood to alveoli

Question 4

inhale

Answer 4

diaphragm moves down (contracts)
ribs move out
volume increases
pressure decreases
air moves IN

Question 5

exhale

Answer 5

diaphragm moves up (relax)
ribs move in
volume decreases
pressure increases
air moves OUT