Diving Physiology — Flashcards

Flashcard 1: A deep breath _____ the secretion of surfactant by stretching the type II cells.

Answer: increases

Flashcard 2: High altitude initially causes _____ alkalosis and hypoxia, which may cause acute altitude sickness

Answer: respiratory

Flashcard 3: _____ may be caused by hypoxemia (hypoxia or hypoxemia)

Answer: Hypoxia

Flashcard 4: Water fall effect has been used to describe the blood flow in the _____ portion of lung.

Answer: middle

Flashcard 5: The partial pressure of water vapor at a normal body temperature of 37C is _____ mm Hg.

Answer: 47

Flashcard 6: Hering-Breuer reflexes are mediated by _____ adapting pulmonary stretch receptors and the impulses travel in the vagus nerve via large myelinated fibers.

Answer: slowly (rapidly/slowly)

Flashcard 7: The graph given below shows _____ _____thoracic obstruction

Answer: variable

Flashcard 8: The graph given depicts the _____ effect

Answer: Haldane

Flashcard 9: The alveolar gas equation states that the alveolar PO2 (PAO2) equals:

Answer: PAO2 = PIO2 – (PaCO2 / R) (PIO2 = FiO2 × [Patm – PH2O])

Extra: Where: - PAO2 = Alveolar PO2 - PIO2 = Inspired PO2 - PaCO2 = Arterial PCO2 - R = Respiratory Quotient (typically 0.8) At sea level: - Patm = 760 mmHg - PH2O = 47 mmHg

Flashcard 10: According to Fick's law, the rate of diffusion of a gas (Vgas) is equal to: _____

Answer: