basic respiratory anatomy worksheet

What are the two entrances for oxygen to enter the respiratory system? The nose and mouth
Where does the air go to from the nose and mouth? The trachea and the pharnx
In between the pharynx and the trachea what structure does this lesson leave out? The esophagus
Where is the trachea located in reference to the esophagus? Its located on the opposite side of the esophagus
What structures moisten the air in the Respiratory System? The nose and mouth
What is the name for the small air sacs at the end of the bronchioles? Alveoli
Where does gas exchange take place in the lungs? The alveoli and it covered by capillaries
What is the main muscle of respiration? The lungs
What happens when we inhale? Exhale? When we inhale, the diaphram contracts. When we exhale, it relaxes.
Sketch a picture of the respiratory system. Include the following structures: nose, mouth, pharynx, larynx, trachea, bronchus, bronchioles, alveoli and lungs.