The Respiratory System

Question 1

Upper Respiratory Tract

Answer 1

• Nose
• Pharynx
• Larynx

Question 2

Pharynx

Answer 2

• Made of nasopharynx, oropharynx, and laryngopharynx
• Tonsils protect against inhaled germs
• Normally larynx is open and esophagus is closed unless someone swallows
• If food/liquid enters the larynx, it causes coughing/choking
• “Heimlich maneuver” can be used to dislodge food blocking the airway
• AKA – throat

Question 3

Larynx

Answer 3

• Passageway for air between pharynx and trachea
• AKA the voice box
• Tip of the larynx (laryngeal prominence) is also called the Adam’s apple
• Vocal cords are mucosal folds supported by elastic ligaments
• The space between the vocal cords is the glottis
• Air being expelled through the glottis makes the vocal cords vibrate

Question 4

Lower Respiratory Tract

Answer 4

• Trachea
• Bronchial Tree
• Lungs

Question 5

Plasma

Answer 5

• Liquid medium for carrying various substances in the blood
• 91% water
• 9% various salts and organic molecules
• Plasma proteins