chapter 29 quiz 1

Molecular oxygen must pass through ___ phospholipid bilayer membranes before it enters the cytosol of a RBC.

• 5

• 8

• 10

• 15

The _____is always about 4 mm Hg less than _____ due to the elastic lungs attempting to pull away from the thoracic wall during inhalation and exhalation.

• intrapleural pressure; intrapulmonary pressure

• intrapulmonary pressure; intrapleural pressure

__ law relates to how the partial pressure and solubility of a gas affect the concentration of that gas in a liquid

• Boyle's

• Henry’s

• Mark's

• Charles'

___ cartilages help keep the laryngeal passageway open during breathing.

• cricothyroid

• Alar

• Cuneiform

• arytenoid

which would cause an increase in voice pitch?

• contraction of the cricothyroid muscles

• contraction of the cricoarytenoid muscles

• relaxation of the thyroarytenoid muscles

• relaxation of the cricoarytenoid muscles

which statement is false?

• Atmospheric pressure equals intraalveolar pressure when air is not moving through a non-obstructed respiratory passageway.

• Atmospheric pressure equals intrapulmonary pressure at the end of normal inhalation.

• Intrapleural pressure is always about 4 mm Hg less than intrapulmonary pressure due to the elastic lungs trying to collapse.

• Atmospheric pressure is greater than intrapulmonary pressure during exhalation

which statement is false?

• Molecular oxygen must pass through two phospholipid cell membranes before reaching the type I cell’s basement membrane.

• Mucus within an alveolus would have a negative effect on gas diffusion efficiency through the respiratory membrane.

• Surfactant decreases lung compliance.

• Surfactant is secreted from Type II cells

which statement is TRUE?

• Vestibular folds are not located in the nasal vestibule.

• Vestibular folds are located superior to the laryngeal vestibule.

• Ventricular folds are not the same as vestibular folds.

• vestibular folds are "true" vocal cords

Intraalveolar pressure is ____ affected by the vertical and horizontal dimensions of the thoracic cavity.

• negatively

• positively