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Question

Gas exchange, the lungs’ main and vital function, takes place in the:
bronchioles.
secondary bronchi.
primary bronchi.
alveoli.
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The upper respiratory tract includes all of the following structures except the:
larynx.
trachea.
oropharynx.
nasopharynx.
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A/P Week 12

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Gas exchange, the lungs’ main and vital function, takes place in the: bronchioles. secondary bronchi. primary bronchi. alveoli. alveoli.
The upper respiratory tract includes all of the following structures except the: larynx. trachea. oropharynx. nasopharynx. trachea.
In the right lung, the superior and middle lobes are separated by the: horizontal fissure. oblique fissure. bronchopulmonary segments. hilum. horizontal fissure.
Which of the following is not lined with a ciliated mucous membrane? Vestibule Posterior nares Trachea Primary bronchi Vestibule
The external openings to the nasal cavities can be referred to as: nostrils. anterior nares. external nares. all of the above. all of the above.
The structures that deflect air as it passes through the nose are called: choanae. paranasal sinuses. conchae. vibrissae. conchae.
Paranasal sinuses are normally filled with: bone marrow. a serous fluid. mucus. air. air.
The eustachian tube connects the middle ear with the: trachea. nose. nasopharynx. oropharynx. nasopharynx.
Which of the following does not distribute air? Trachea Bronchus Alveolus Nose Alveolus
The structure in the neck known as the “Adam’s apple” is the: epiglottis. cricoid cartilage. glottis. thyroid cartilage. thyroid cartilage.
The more common name for the pharynx is the: throat. windpipe. voice box. nasal cavity. throat.
The smallest branches of the bronchial tree are: primary bronchi. secondary bronchi. tertiary bronchi. bronchioles. bronchioles.
The small, leaf-shaped cartilage behind the tongue and hyoid bone is the: cricoid cartilage. thyroid cartilage. corniculate cartilage. epiglottis. epiglottis.
The hollow nasal cavity is separated by a midline partition called the: septum. conchae. cribriform plate. turbinates. septum.
The largest of the paranasal sinuses is the: maxillary. frontal. ethmoid. sphenoid. maxillary.
The anatomical division of the pharynx that is located behind the mouth from the soft palate above to the level of the hyoid bone below is called the: nasopharynx. oropharynx. laryngopharynx. sphenopharynx. oropharynx.
Which of the following is true of the intrinsic muscles of the larynx? Their origin is the hyoid bone. They move the larynx as a whole. They serve in voice production. Both A and B are correct. They serve in voice production.
The respiratory portion of the nasal passage is lined with a mucous membrane made up of _____ epithelium. stratified columnar pseudostratified columnar simple squamous simple columnar pseudostratified columnar
The fauces, one of the seven openings found in the pharynx, opens into the: oropharynx. nasopharynx. esophagus. Both A and B are correct. oropharynx.
The approximate length of the trachea, or windpipe, is _____ cm. 5 11 17 24 11
The lower border of the cavity of the larynx is formed by the: epiglottis. cricoid cartilage. glottis. thyroid cartilage. cricoid cartilage.
Which of the following is not a function of the pharynx? Aids in forming vowel sounds Provides pathway for food Determines the quality of the voice Provides pathway for air Determines the quality of the voice
Olfactory epithelium is found: lining the nasopharynx. covering the superior turbinate. lining the paranasal sinuses. in all of the above. covering the superior turbinate.
Which of the following is not a function of the respiratory system? Assists with homeostasis of body pH Distributes oxygen to cells Filters air Warms air Distributes oxygen to cells
The approximate partial pressure of oxygen at standard atmospheric pressure is about _____ mm Hg. 23 160 300 590 160
Which of the following constitutes total lung volume? Residual volume and vital capacity Tidal volume, inspiratory reserve volume, and expiratory reserve volume Residual volume and tidal volume Vital capacity and tidal volume Residual volume and vital capacity
When the pressure in the lung is greater than atmospheric pressure: inspiration occurs. expiration occurs. lung tissue has collapsed. the bronchioles are obstructed. expiration occurs.
About 98.5% of the oxygen carried by systemic arterial blood is attached to: bicarbonate ions. hemoglobin. carbaminohemoglobin. chloride ions. hemoglobin.
The PCO2 in alveolar air is _____ blood. less than in the systemic venous greater than in the systemic venous equal to the systemic arterial Both A and C are correct. Both A and C are correct.
The term used to describe the volume of air exchanged during normal inspiration and expiration is: inspiratory and expiratory reserve volume. vital capacity. tidal volume. residual volume. tidal volume.
Excessive fluid in the pleural cavity would be most likely to cause: increased residual volume. decreased vital capacity. increased functional reserve volume. decreased tidal volume. decreased vital capacity.
One hundred milliliters of arterial blood contains approximately what volume percent of oxygen? 10% 15% 20% 25% 20%
Which of the following is not a regulated process associated with the functioning of the respiratory system? Transport of gases Gas exchange in lungs and tissue Control of cell metabolism rate Pulmonary ventilation Control of cell metabolism rate
The major form by which carbon dioxide is transported in the circulatory system is: in solution. as bicarbonate ions. as carbaminohemoglobin. none of the above. as bicarbonate ions.
If the tidal volume of a given individual is 500 ml, then the anatomical dead space is approximately _____ ml. 50 100 150 200 150
Which of the following would have the greatest accelerating effect on the dissociation of oxygen from hemoglobin? Increased PO2 Decreased PCO2 Decreased PO2 and decreased PCO2 Decreased PO2 and increased PCO2 Decreased PO2 and increased PCO2
Normal, quiet breathing is known as: orthopnea. hyperpnea. dyspnea. eupnea. eupnea.
A drop in the body’s production of carbonic anhydrase would hinder the formation of: carbonic acid. oxyhemoglobin. carbaminohemoglobin. All of the above are correct. carbonic acid.
Standard atmospheric pressure is _____ mm Hg. 650 700 760 800 760
The PCO2 in the atmosphere is: less than in the alveolar air. greater than in the alveolar air. equal to the alveolar air. greater than arterial blood. less than in the alveolar air.
Which type of breathing is characterized by repeated sequences of deep gasps and apnea, and is usually seen in people with increased intracranial pressure? Hyperpnea Dyspnea Biot’s breathing Eupnea Biot’s breathing
Which of the following is not a means of transporting oxygen in the blood? As oxyhemoglobin Combined with the bicarbonate ion (HCO3–) Dissolved in the plasma All of the above are used to transport oxygen in the blood. Combined with the bicarbonate ion (HCO3–)
Which muscles are used for forced expiration? Sternocleidomastoid and abdominal muscles Sternocleidomastoid and intercostals External intercostals and pectoralis muscles Abdominal muscles and internal intercostals Abdominal muscles and internal intercostals
The symbol HbNCOOH– is used for: carbonic anhydrase. carbaminohemoglobin. the heme group. the bicarbonate ion. carbaminohemoglobin.
Boyle’s law states that the volume of a gas varies _____ with pressure at a _____ temperature. directly; constant inversely; constant directly; constantly changing inversely; constantly changing inversely; constant
By the time the blood leaves the lung capillaries to return to the heart, what percentage of the blood’s hemoglobin has united with oxygen? 55% 63% 82% 97% 97%
Created by: kscalder
 

 



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