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25 Cards in this Set
- Front
- Back
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The nasal cavities and mouth meet at a region of the body called the:
A) nasal conchae B) sinuses C) pharynx D) trachea |
C) pharynx
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All the following apply to the sinuses except:
A) they are bony extensions of the nasal cavity B) they may be found in the frontal, maxillary, vomer, and parietal bones C) their linings are continuous with linings of the nasal cavity D) they are places where air circulates |
B) they may be found in the frontal, maxillary, vomer, and parietal bones
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At the roof of the nasal cavities, receptors exist for the sense of:
A) hearing B) smell C) balance D) touch and feel |
B) smell
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All the following are functions of the nose except:
A) it moistens the air B) it serves as a site for warming the air C) it is the place where air is filtered D) it is the site of gas exchange |
D) it is the site of gas exchange
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The mucus secreted by the nasal mucosa:
A) traps microorganisms B) dries the air C) provides nutrients to the nasal cells D) contains digestive enzymes |
A) traps microorganisms
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Such thins as pollen grains, mites, and feathers may be the cause of:
A) pneumonia B) tonsillitis C) allergic rhinitis D) emphysema |
C) allergic rhinitis
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The digestive and repiratory passageways meet one another at the:
A) larynx B) esophagus C) oropharynx D) nostrils |
C) oropharynx
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The function of the Eustachian tubes is to:
A) deliver nutrients to the middle ear B) provid digestive enzymes for carbohydrates C) deliver hormones to the mouth D) equalize air pressure between the pharynx and middle ear |
D) equalize air pressure between the pharynx and middle ear
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The function served by tonsils is to:
A) produce important hormones for the body B) synthesize red blood cells for the body C) induce immunity to airborne infectious agents D) synthesize blood clotting proteins |
C) induce immunity to airborne infectious agents
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The two tubes at the distal end of the pharynx are the:
A) Eustachian tube and nostril B) larynx and esophagus C) vena cava and aorta D) small and large intestines |
B) larynx and esophagus
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The function of the cartilage rings in the trachea is to:
A) hold open the trachea B) provide calcium to the bloodstream C) trap foreign microorganisms in the respiratory tract D) relay nerve impulses to the respiratory tract |
A) hold open the trachea
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The epiglottis has the function of:
A) supporting the trachea B) sealing off the respiratory tract when food or drink passes into the esophagus C) serving as a site for the movement of vocal chords D) relay nerve impulses to the respiratory tract |
B) sealing off the respiratory tract when food or drink passes into the esophagus
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The trachea is supported and held open by rings of:
A) skeletal muscle B) bone C) epithelial tissue D) cartilage |
D) cartilage
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The branches that emerge from the trachea and lead to the lungs are the:
A) alveolar tubes B) bronchi C) terminal bronchioles D) alveolar ducts |
B) bronchi
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Spasms of the smooth muscles in the bronchial tree may be triggered by an allergy and may result in:
A) asthma B) hay fever C) skeletal muscle contraction D) contractions of the cartilage rings |
A) asthma
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Which of the following applies to the right lung?
A) it is subdivided into two lobes B) blood reaches it by the pulmonary vein C) it is subdivided to three lobes D) it has its own nerve supply |
C) it is subdivided to three lobes
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The two-layer membrane known as the pleura:
A) is found within the trachea B) separates the left and right lungs C) surrounds each lung D) defines the limit of the alveolus |
C) surround each lung
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The pleural cavity is found:
A) between the visceral and parietal pleura B) between the thoracic and abdominal cavities C) between the dorsal and ventral cavities D) surrounding the heart |
A) between the visceral and parietal pleura
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Contractions of the respiratory muscles result in a(n):
A) decrease in the volume of the thorax B) increase in the volume of the thorax C) increase in the amount of blood flowing through the lungs D) decrease in the amount of blood flowing through the lungs |
B) increase in the volume of the thorax
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The pressure changes occurring in the lungs during inspiration are due to all the following except:
A) the closed thoracic compartment enclosing the lungs B) the elasticity of the lungs C) the firm attachment of the pleural membranes D) nerve impulses reaching the lungs from the brain |
D) nerve impulses reaching the lungs from the brain
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There is voluntary control of:
A) blood flow to the lungs but not from the lungs B) nerve impuses to the lungs C) inspiration D) lung contraction |
C) inspiration
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A normal inspiration of air brings into the lungs about:
A) 2500 mL of air B) about 10,000 mL of air C) about 500 mL of air D) about 10 mL of air |
C) about 500 mL of air
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The vital capacity is the:
A) volume of air left in the lungs after forceful expiration B) largest volume of air that can be expelled from the lungs C) amount of air remaining in the lungs after expiration D) amount of air entering the lung during a normal inspiration |
A) volume of air left in the lungs after forceful expiration
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All the following have an effect on the control of breathing except:
A) chemical receptors in the carotid arteries B) the respiratory control center in the brain stem C) the level of hydrogen ions in the cerebrospinal fluid D) amount of blood flowing into the lungs |
D) amount of blood flowing into the lungs
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Carbon dioxide can be carried in the bloodstream by all the following methods except:
A) attached to hemoglobin molecules B) as a dissolved gas in plasma C) as bicarbonate ions D) attached to hormone molecules in the blood |
D) attached to hormone molecules in the blood
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