Mastering Chapter 21 Part 2

The normal respiratory rate of a resting adult ranges from ________ breaths each minute, or roughly one for every four heartbeats. 22 to 24 4 to 6 12 to 18 16 to 20 10 to 12

12 to 18

________ is the amount of air that moves into the respiratory system during a single respiratory cycle under resting conditions. Residual volume Expiratory reserve volume Inspiratory reserve volume Tidal volume Inspiratory capacity

tidal volume

Air remaining in the conducting portion of the respiratory system that does not reach the alveoli is known as respiratory minute volume. functional residual capacity. alveolar ventilation volume. anatomic dead space. minimal volume.

anatomic dead space

Air moves out of the lungs when the pressure inside the lungs is less than the pressure in the atmosphere. less than intrapulmonic pressure. greater than the pressure in the atmosphere. equal to the pressure in the atmosphere. greater than intraalveolar pressure.

greater than the pressure in the atmosphere

The condition of having low tissue oxygen levels is known as anoxia. hypoventilation. hypercapnia. hypoxia. hyperoxia.

hypoxia

________ is the amount of air that you can inhale above the resting tidal volume. Expiratory reserve volume Inspiratory reserve volume Residual inhaled volume Enhanced tidal volume Inspiratory capacity

inspiratory reserve volume

View Available Hint(s) During inspiration, the physical changes in the respiratory system cause: thoracic cavity pressure to increase above intrapulmonary pressure intrapulmonary pressure to equal atmospheric pressure intrapulmonary pressure to increase above atmospheric pressure intrapulmonary pressure to decrease below atmospheric pressure

intrapulmonary pressure to decrease below atmospheric pressure

Boyle's law states that gas volume is inversely proportional to pressure. directly proportional to temperature. inversely proportional to temperature. directly proportional to pressure. both directly proportional to pressure and directly proportional to temperature.

inversely proportional to pressure

During inhalation: thoracic volume decreases. pressure inside the lungs is less than pressure outside. pressure rises inside the lungs. the diaphragm moves superiorly.

pressure inside the lungs is less than pressure outside

Alveolar ventilation refers to the movement of dissolved gases from the alveoli to the blood. utilization of oxygen by alveolar cells to support metabolism. movement of dissolved gases from the blood to the alveoli. movement of air into and out of the lungs. amount of air reaching the alveoli each minute.

amount of air reaching the alveoli each minute.

If the fluid bond between the parietal and visceral pleura is broken and the lung collapses, the resulting condition is termed anaplasia. emphysema. metaplasia. atelectasis. apnea.

atelectasis

Which statement best expresses Boyle's Law? If the volume of a gas-filled container increases, the pressure of the gas in the container decreases. If the pressure of a gas in a sealed container increases, the volume of the container will increase. If the temperature of a gas increases, the volume of the gas will increase. If the volume of a gas in a sealed container increases, the pressure of the gas increases.

if the volume of a gas-filled container increases, the pressure of the gas in the container decreases.

inspiration is passive and expiration involves muscular contractions. inspiration and expiration are both passive. inspiration and expiration involve muscular contractions. inspiration involves muscular contractions and expiration is passive. None of the answers is correct.

inspiration involves muscular contractions and expiration is passive.

Absorption of O2 from blood and release of CO2 from tissue cells is known as external respiration. pulmonary ventilation. alveolar ventilation. internal respiration. gas diffusion.

internal respiration

Figure 21-2 What pressure will be present in the space labeled "5"? alveolar pressure intrapulmonary pressure atmospheric pressure subatmospheric pressure subalveolar pressure

intrapulmonary pressure

Pulmonary ventilation refers to the utilization of oxygen. movement of dissolved gases from the alveoli to the blood. movement of dissolved gases from the blood to the interstitial space. movement of dissolved gases from the interstitial space to the cells. movement of air into and out of the lungs.

movement of air into and out of the lungs

Which is defined as the amount of air that remains in the lungs even after a maximal exhalation? minimal volume tidal volume residual volume expiratory reserve volume

residual volume

Which of the following can be calculated if the tidal volume and respiratory rate are known? anatomic dead space expiratory reserve volume respiratory minute volume inspiratory reserve volume minimal volume

respiratory minute volume

Which of these physical changes to the respiratory structures do not cause the lung volume to increase? The diaphragm contracts. The intrapulmonary pressure rises above the atmospheric pressure. The ribcage is pulled upward. The thoracic cavity volume increases.

the intrapulmonary pressure rises above the atmospheric pressure.

When the diaphragm and external intercostal muscles contract, the lungs shrink. the volume of the thorax increases. the volume of the lungs decreases. the volume of the thorax decreases. expiration occurs.

the volume of the thorax increases

When there is no air movement, the relationship between the intrapulmonary and atmospheric pressure is that intrapulmonary pressure is greater than atmospheric. they are equal. atmospheric pressure is less than intrapulmonary. atmospheric pressure is more than intrapulmonary. intrapulmonary pressure is less than atmospheric.

they are equal

The unit of measurement for pressure specifically preferred by many respiratory therapists is cm H2O. torr. mm Hg. All of the answers are correct. None of the answers is correct

torr

If a patient being tested inhales as deeply as possible and then exhales as much as possible, the volume of air expelled would be the patient's tidal volume. vital capacity. reserve volume. expiratory reserve volume. inspiratory reserve volume

vital capacity