A&P Final Mastering questions (Respiratory) – Flashcards

Which of the following respiratory structures is more commonly known as the "throat"? Esophagus Trachea Larynx Pharynx

The _________________ is also known as the "guardian of the airways". vestibular folds glottis epiglottis larynx

Which parts of the respiratory system function as the main sites of gas exchange? terminal bronchioles trachea primary bronchi alveoli

________, the difference between the intrapulmonary and intrapleural pressures, prevents the lungs from collapsing. Atmospheric pressure Intrapleural pressure Intrapulmonary pressure Transpulmonary pressure

Quiet inspiration is ____________, and quiet expiration is ______________. an active process; also an active process a passive process; an active process a passive process; also a passive process an active process; a passive process

Which of the following represents all of the processes involved in respiration in the correct order? Pulmonary ventilation; External respiration; Transport of respiratory gases; Internal respiration Pulmonary respiration; External ventilation; Internal ventilation; Transport of respiratory gases External respiration; Internal respiration; Transport of respiratory gases Pulmonary ventilation; External ventilation; Internal ventilation; Transport of respiratory gases

What is the driving force behind pulmonary ventilation? air sac contraction environmental stimuli volume changes of the thoracic cavity muscle contraction

Which of the following is NOT a physical factor that influences pulmonary ventilation? alveolar surface tension airway resistance lung compliance partial pressure of oxygen in the air

Unlike inspiration, expiration is a passive act because no muscular contractions are involved. Expiration, however, depends on two factors. Which of the choices below lists those two factors? the expansion of respiratory muscles that were contracted during inspiration and the lack of surface tension on the alveolar wall the recoil of elastic fibers that were stretched during inspiration and the inward pull of surface tension due to the film of alveolar fluid the negative feedback of expansion fibers used during inspiration and the outward pull of surface tension due to surfactant combined amount of CO2 in the blood and air in the alveoli

Which of the choices below describes the forces that act to pull the lungs away from the thorax wall and thus collapse the lungs? compliance and transpulmonary pressures the natural tendency for the lungs to recoil and the surface tension of the alveolar fluid the natural tendency for the lungs to recoil and transpulmonary pressures compliance and the surface tension of the alveolar fluid

The relationship between the pressure and volume of gases is given by ________. Henry's law Dalton's law Boyle's law Charles' law

Which of the following is the primary factor in oxygen attachment to, or release from, hemoglobin? partial pressure of oxygen temperature partial pressure of carbon dioxide blood pH

Which form of CO2 transport accounts for the least amount of CO2 transported in blood? As bicarbonate ion in plasma Chemically bound to hemoglobin As carbon monoxide in plasma Dissolved in plasma

What is the most powerful respiratory stimulant in a healthy person? blood carbon dioxide level oxygen needs of cells blood oxygen level blood pH