AP CH 22 HW

The alveolar ducts are part of the conducting zone. True False

Respiratory system organs are divided functionally into conducting zone structures (nose to terminal bronchioles), which filter, warm, and moisten incoming air; and respiratory zone structures (respiratory bronchioles and alveolar ducts to alveoli), where gas exchanges occur

Which of the following statements about the pleurae is NOT true? The pleural lining reduces friction during ventilation. The visceral pleura covers the external lung surface and lines the fissures between lobes. The parietal and visceral pleura are continuous. ---- The pleurae create one continuous cavity for both lungs.

The parietal and visceral pleura are continuous.

Quiet inspiration is __________, and quiet expiration is __________. an active process; also an active process an active process; a passive process ---- a passive process; an active process a passive process; also a passive process

an active; a passive process

Which form of hypoxia reflects poor O2 delivery resulting from too few RBCs or from RBCs that contain abnormal or too little hemoglobin? anemic hypoxia --- ischemic (stagnant) hypoxia histotoxic hypoxia hypoxemic hypoxia

anemic hypoxia

Which form of CO2transport accounts for the least amount of CO2 transported in blood? chemically bound to hemoglobin as bicarbonate ion in plasma as carbon monoxide in plasma dissolved in plasma ----

dissolved in plasma

What structure prevents food and liquids from entering the trachea? laryngeal prominence glottis vestibular folds Epiglottis ----

epiglottis

Which of the following processes is NOT properly matched with its description? internal respiration: O2 diffuses out of the blood external respiration: CO2 diffuses into the blood stream ----- transport of respiratory gases: O2 is bound to hemoglobin pulmonary ventilation: movement of gases into and out of the lungs

external respiration: CO2 diffuses into the blood stream

Residual volume can be measured with a spirometer. True False ----

false

The division between the upper and lower respiratory system is at the nasopharynx. True False --

false

Which of the following creates an adhesive force that prevents separation of the parietal and visceral pleurae during ventilation? alveolar fluid surface tension lung elasticity negative intrapulmonary pressure --- negative intrapleural pressure

negative intrapulmonary pressure

Which of these structures is/are NOT properly matched with one of its/their functions? nasopharynx: conduct air toward and from the larynx pharyngeal tonsil: trap and destroy pathogens entering the nasopharynx in air nasal conchae: increase the mucosal surface area exposed to air paranasal sinuses: house olfactory receptors ---

paranasal sinuses: house olfactory receptors

Which of the following is an organ shared by the respiratory system and the digestive system? trachea larynx esophagus Pharynx ----

pharynx

Which of the following arterial blood levels is the most powerful respiratory stimulant? low CO2 level arterial pH low O2 level rising CO2 levels ---

rising CO2 levels

Which of the following is NOT a benefit of breathing through the nose? the production of smooth, laminar airflow as air passes by the nasal conchae ---- recovering heat and moisture from the air leaving the nasal cavity heating and moistening the air entering the nasal cavity filtration of the air entering the nasal cavity

the production of smooth, laminar airflow as air passes by the nasal conchae

__________ pressure, the difference between the intrapulmonary and intrapleural pressures, prevents the lungs from collapsing. Transthoracic Transpulmonary --- Atmospheric Intra-alveolar

transpulmonary

Henry's law of partial pressures states that when a gas is in contact with a liquid, that gas will dissolve in the liquid in proportion to its partial pressure. True ---- False

true

If your core temperature becomes colder, it is more difficult for oxygen to dissociate from hemoglobin at any PO2. True --- False

true

To produce the pressure gradient responsible for inspiration, thoracic volume must first increase in order to decrease intrapulmonary pressure relative to atmospheric pressure. True ---- False

true