Exam 12: The Respiratory System

A person who has a tidal volume of 400 ml/breath, a respiratory rate of 14 breaths/minute, and an anatomic dead space volume of 120 ml will have a pulmonary ventilation rate of

Which of the following makes breathing more difficult?

MATCHING Indicate which lung volume or capacity is being described in the column below by filling in the appropriate letter in the blank. There is only one correct answer for each question and each answer may be used more than once. -inspiratory reserve volume + tidal volume + expiratory reserve volume

The stretch receptors for the Hering-Breuer reflex are located in the

Surfactant is produced for the first time at the third month of gestation.

Carbonic anhydrase

Which of the following structures serves as a common passageway for both the respiratory and digestive systems?

2,3-diphosphoglycerate

The intrapleural pressure is negative to maintain lung inflation.

Newborn respiratory distress syndrome is caused by an excess of pulmonary surfactant.

The minimum volume of air that remains in the lungs after a maximal expiration is termed the

Pulmonary surfactant contributes to lung stability by ____________________ surface tension.

Indicate which type of hypoxia would be present in each of the circumstances listed below by writing the appropriate letter in the blank using the following answer code. -carbon monoxide poisoning

Which condition would result in the highest alveolar ventilation rate?

Hypercapnia

Both the respiratory system and the circulatory system are involved in the process of respiration.

Which of the following is the last step that produces an inspiration?

Intrapleural pressure normally does not equilibrate with the intra-alveolar pressure.

-At a PO₂ of 20 mm Hg, what percentage of oxygen was released from Hb?

Indicate the effect the following changes would have on oxygen release from Hb. -H⁺ levels have increased