2/24 Ch. 21 modules 21.8-21.11

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

12 to 18

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

intrapulmonary pressure

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

Inspiratory reserve volume

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

The ribcage is pulled upward. or The intrapulmonary pressure rises above the atmospheric pressure.

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

Tidal volume

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

amount of air reaching the alveoli each minute.

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

greater than the pressure in the atmosphere.

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

hypoxia.

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

pressure inside the lungs is less than pressure outside.

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

residual volume

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

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

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

anatomic dead space.

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

atelectasis.

In quiet breathing, inspiration and expiration are both passive. inspiration is passive and expiration involves muscular contractions. 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 internal respiration. external respiration. pulmonary ventilation. alveolar ventilation. gas diffusion.

internal respiration.

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 decrease below atmospheric pressure intrapulmonary pressure to increase above atmospheric pressure

intrapulmonary pressure to decrease below atmospheric pressure

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

inversely proportional to pressure.

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

movement of air into and out of the lungs.

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

respiratory minute volume

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

the volume of the thorax increases.

When there is no air movement, the relationship between the intrapulmonary and atmospheric pressure is that atmospheric pressure is more than intrapulmonary. intrapulmonary pressure is greater than atmospheric. they are equal. atmospheric pressure is less 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. mm Hg. torr. 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 reserve volume. tidal volume. vital capacity. expiratory reserve volume. inspiratory reserve volume.

vital capacity.