Exam 18: The Respiratory System

Cigarette smoking is the single most preventable cause of death and disability worldwide.

Exerting greater air pressure on the true vocal cords leads to

Hypocapnia induced by voluntary hyperventilation can be dangerous, especially to swimmers, because the oxygen level in the brain tissues may drop dangerously low and cause fainting.

Which of the following structures in the respiratory system is commonly called the Adam's apple?

Which of the following is NOT a characteristic of the inflation reflex of the lungs?

Based on the volumes shown in the spirogram, what is the resting minute ventilation (MV)of this individual at a breathing rate of 12 breaths per min?

The flap of elastic cartilage covered by epithelium that closes off the larynx and prevents food and water from entering the larynx during swallowing is called the

The respiratory zone of the respiratory system consists of tissues that facilitate

The exchange of gases between the air spaces (alveoli)of the lungs and the blood in pulmonary capillaries, where the blood gains O₂ and loses CO₂, is called

The nostrils are also called external nares.

Which labeled point in the diagram of external and internal respiration would have a PCO₂ equal to 45 mm Hg under normal breathing conditions at sea level?

The C-shaped rings that provide support for the wall of the trachea are made out of

In general, adult males have lower pitched voices because testosterone stimulates the thickening and lengthening of the false vocal folds.

Which of the following is NOT a function of the respiratory system?

The palatine tonsils are found in the

Deep labored inhalations involve contraction of all of the following muscles EXCEPT the

Expiration during normal quiet breathing is a passive process requiring no muscular contractions.

The false vocal cords

Which of the following passageways are directly connected to the laryngopharynx?

The main respiratory functions of the nasal cavity are to filter, warm, and moisten incoming air.