AP II Exam 3 Review Flashcards
The largest shield-shaped cartilage of the larynx is the ___ cartilage:
a) epiglottal
b) cuneiform
c) cricoid
d) arytenoid
e) thyroid
THYROID
The most important chemical regulator of respiration is:
a. hemoglobin
b. oxygen
c. sodium ion.
d. bicarbonate ion.
e. carbon dioxide
E. CARBON DIOXIDE
The pneumotaxic center of the pons:
a. prolongs inspiration
b. suppresses the expiratory center in the medulla
c. sets that at-rest respiratory pattern
d. both prolongs inspiration and modified the rate and depth of breathing
e. modifies the rate and depth of breathing
MODIFIES THE RATE AND DEPTH OF BREATHING
At a P-O2 of 70 mm Hg and a normal temperature and pH, hemoglobin is ___ percent saturated with oxygen.
a. 75
b.10
c. 25
d. 50
e. more than 90
E. MORE THAN 90
Define oxyhemoglobin:
a) hemoglobin that has less than 4 molecules of oxygen bound
b. hemoglobin with 4 molecules of oxygen bound and 4 molecules of carbon dioxide bound
c. hemoglobin that has less that 4 molecules of carbon dioxide bound
d. hemoglobin that has four molecules of oxygen bound
e. hemoglobin that has 4 molecules of carbon dioxide bound
D. OXYHEMOGLOBIN IS HEMOGLOBIN THAT HAS 4 MOLECULES OF OXYGEN BOUND
Which of the following is not a function of the nasal mucosa?
a. dehumidify the incoming air
b. cool outgoing air
c. dehumidify the outgoing air
d. trap particulate matter
e. humidify the incoming air
A. DEHUMIDIFY THE INCOMING AIR
Each terminal bronchiole supplies air directly to:
a. several alveolar sacs
b. about 6500 bronchioles
c. a single pulmonary lobule
d. a single alveolar duct
e. over 150 alveoli
C. A SINGLE PULMONARY LOBULE
Which of the following would be greater?
a. hemoglobin’s affinity of oxygen when the BPG level is high
b. hemoglobin’s affinity for oxygen when the BPG level is low
B. HEMOGLOBIN’S AFFINITY FOR OXYGEN WHEN THE BPG LEVEL IS LOW
Identify the paired and unpaired cartilages that compose the larynx;
a. the pharyngeal, tracheal, and vocal folds. UP are thyroid cartilage vestibular fold and rima glottidis.
b. Paired were arytenoid, corniculate and cuneiform. Unpaired are the thyroid cartilage, cricoid cartilage, and epiglottis
c. Paired are corniculate, cuboid, and cuneiform. Unpaired are glottis, and epiglottis.
d. Paired are vestibular and vocal. Unpaired are thyroid and sternocleidomastoid.
e. Paired cartilages are arytenoid, pharyngeal, and laryngeal. Unpaired are thyroid and parathyroid cartilage.
B. THE PAIRED CARTILAGES ARE THE ARYTENOID, CORNICULATE, AND CUNEIFORM. THE UNPAIRED CARTILAGES ARE THE THYROID CARTILAGE, CRICOID CARTILAGE ,AND EPIGLOTTIS
During swallowing, all of the following occur except:
a. the larynx is elevated
b. the uvula rises to block the oropharynx,
c. solids are prevented from entering the respiratory tract.
d. liquids are prevented from entering the respiratory tract.
e. the epiglottis folds over the glottis
B. THE UVULA RISES TO BLOCK THE OROPHARYNX
Which of the following statements is true regarding activity in the alveoli:
a. alveolar capillaries constrict when oxygen levels are high
b. they are composed of simple cuboidal epithelium
c. type i pneumocytes produce surfactant
d. type II pneumocytes are the site of gas exchange
e. alveolar macrophages collect stray dust particles
E. ALVEOLAR MACROPHAGES COLLECT STRAY DUST PARTICLES
The airway that connects the larynx to the bronchi is the
a. trachea
b. bronchus
c, laryngopharynx
d. bronchiole
e. alveolar duct
TRACHEA
Define oxyhemoglobin:
a) hemoglobin that has less than 4 molecules of oxygen bound
b. hemoglobin with 4 molecules of oxygen bound and 4 molecules of carbon dioxide bound
c. hemoglobin that has less that 4 molecules of carbon dioxide bound
d. hemoglobin that has four molecules of oxygen bound
e. hemoglobin that has 4 molecules of carbon dioxide bound
D. OXYHEMOGLOBIN IS HEMOGLOBIN THAT HAS 4 MOLECULES OF OXYGEN BOUND
A hemoglobin molecule contains ___ globular protein subunits
a. 2 alpha and 2 beta
b. 4 beta
c. 2 alpha and 3 beta
d. 1 alpha and 1 beta
e. 4 alpha
A. 2 ALPHA AND 2 BETA
Which ventilates alveoli more effectively: slow, deep breaths, or rapid, shallow breaths? explain why.
a. rapid, shallow breaths because a larger amount of the tidal volume of each breath is spent moving air into and out of the anatomic dead space.
b. slow, deep breaths because a smaller amount of the tidal volume of each breath is spent moving air into and out of the anatomic dead space
c. slow, deep breaths because a larger amount of the tidal volume of each breath is spent moving air into and out of the anatomic dead space
d. rapid, shallow breaths because a smaller amount of the tidal volume of each breath is spent moving air into and out o the anatomic dead space.
SLOW, DEEP BREATHS BECAUSE OF A SMALLER AMOUNT OF THE TIDAL VOLUME OF EACH BREATH IS SPENT MOVING AIR INTO AND OUT OF THE ANATOMIC DEAD SPACE
All of the following provide chemoreceptor input to the respiratory centers of the medulla oblongata except the
a. carotid sinuses
b. medullary chemoreceptors
c. olfactory epithelium
d. aortic sinuses
e. all of the answers are correct
C. OLFACTORY EPITHELIUM
Which of the following is false about the pharynx?
a. it’s shared by the integumentary and respiratory systems
b. the nasopharynx is superior
c. the laryngopharynx ends at esophagus opening
d. solids, liquids, and gasses pass through
e. the oropharynx connects to the oral cavity
IT IS SHARED BY THE INTEGUMENTARY AND RESPIRATORY SYSTEM
What physical changes affect the volume of the lungs?
a. the movements of the upper limbs affect the volume of the lungs
b. the contraction of tracheal smooth muscle affect the volume of the lungs
c. the degree of flexion and extension of the trunk affect the volume of the lungs
d. the movements of the diaphragm and rib cage affect the volume of the lungs
e. the contraction of the abdominal muscles affect the volume of the lungs
D. THE MOVEMENTS OF THE DIAPHRAGM AND RIB CAGE AFFECT THE VOLUME OF THE LUGS
Henry’s law states that
a. in a mixture of gases such as air, the total pressure is the sum of the individual partial pressures of the gases in the mixture
b. gas pressure is inversely proportional to gas volume
c. gas volume and pressure are inversely proportional
d. the volume of gas the will dissolve in a solvent is proportional to the partial pressure of that gas
e. gas volume and temperature are directly proportional
D. THE. VOLUME OF GAS THAT WILL DISSOLVE IN A SOLVENT IS PROPORTIONAL TO THE PARTIAL PRESSURE OF THAT GAS
If the fluid bond between the parietal and visceral pleura is broken and the lung collapses, the resulting condition is termed;
a. anaplasia
b. metaplasia
c. emphysema
d. apnea
e. atelectasis
E. ATELECTASIS
The visible and palpable prominence on the throat known as the Adam’s apple is part of the
a. thyroid cartilage
b. glottis.
c. corniculate cartilage
d.epiglottis
e. cricoid cartilage
A. THYROID CARTILAGE
Which of the follow statements about bronchioles is true?
a. walls contain hyaline cartilage
b. sympathetic action causes bronchodilation
c. segmental bronchi are branches of terminal bronchioles
d. extreme bronchodilation occurs in asthma
e. the muscular walls are composed of a mixtue of skeletal and smooth muscle
B. SYMPATHETIC ACTION CAUSES BRONCHODILATION
which chemical factors in blood or cerebrospinal fluid stimulate the respiratory centers?
a. Cl-, Na+, and K+ concentrations
b. Ca2+, Na+, and K+ concentrations
c. pH, PO2, and PCO2 concentrations
d. PO2, glucose, and lactate concentrations
e.hematocrit, glucose, PO2, and PCO2
C. pH, PO2, AND PCO2, CONCENTRATIONS
A mucosa consists of
a. an epithelium
b. both an epithelium and an underlying layer of areolar tissue
c. stratified squamous cells
d. an underlying layer of areolar tissue
e. both an underlying layer of areolar tissue and stratified squamous cells
B. BOTH AN EPITHELIUM AND AN UNDERLYING LAYER OF AREOLAR TISSUE
Which of the following factors would increase the amount of oxygen discharged by hemoglobin into peripheral tissues/
a. decreased temperature
b. decreased amounts of BPG
c. decreased pH
d. increased tissues PO2
e. none of the answers is correct
C. DECREASED pH
Define pulmonary lobule
a. a pulmonary lobule is a large subdivision of the lung supplied by a lobar or secondary bronchus
b. a pulmonary lobule is a region of the lung that does not participate in gas exchange but contains conducting passageways only
c. a pulmonary lobule is the smallest subdivision of the lungs; branches of the pulomary arteries, pulmonary veins, and a terminal bronchiole supple each lobule
d. a pulmonary lobule is a medium-sized subdivision of the lungs supplied by a segmental bronchus
e. a pulmonary lobule is the largest subdivisions of the lung supplied by a main or primary bronchus
C. A PULMONARY LOBULE IS THE SMALLEST SUBDIVISION OF THE LUNGS; BRANCHES OF THE PULMONARY ARTERIES, PULMONARY VEINS, AND A TERMINAL BRONCHIOLE SUPPLY EACH LOBULE
In quiet breathing
a. inspiration and expiration involve muscular contractions
b. inspiration and expiration are both passive
c. inspiration is passive and expiration involves muscular contractions
d. inspiration involves muscular contraction and expiration is passive
e. non of the answers is correct
D. INSPIRATION INVOLVES MUSCULAR CONTRACTIONS AND EXPIRATION IS PASSIVE
The apneustic centers promote quiet inhalation by stimulating the
a. pneumotaxic centers
b. pre-Bötzinger complex
c. dorsal respiratory group (DRG)
d. ventral respiratory group (VRG)
e. none of the answers is correct. The apneustic centers cannot promote inhalation
C. DORSAL RESPIRATORY GROUP (DRG)
Most of the carbon dioxide in the blood is transported as
a. bicarbonate ions
b. solute dissolved in the plasma
c. carbonic acid
d. solute dissolved in the cytoplasm of red blood cells
e carbaminohemoglobin
A. BICARBONATE IONS
After a quiet expiration, the amount of air in your lungs is called the
a. expiratory reserve volume
b. tidal volume
c. residual volume
d. inspiratory capacity
e. functional residual capacity
E. FUNCTIONAL RESIDUAL CAPACITY
The respiratory defense system is important fo all of the following reasons except:
a. keeping out pathogens
b. providing gas exhange
c. helping filter the air
d. keeping out debris
e. helping warm the air
B. PROVIDING GAS EXCHANGE
Each 100 mL of blood leaving the alveolar capillaries. carries away roughly ___ of oxygen.
a. 20 mL
b. 10 mL
c. 30 mL
d. 50 mL
e. 75mL
A. 20 mL
Absorption of O2 from blood and release of CO2 from tissue cells is known as
a. alveolar ventilation
b. internal respiration
c. external respiration
d. pulmonary ventilation
e. gas diffusion
B. INTERNAL RESPIRATION
What pressure will be present in the space labeled 5
a. intrapulomary pressure
b. alveolar pressure
c. atmospheric pressure
d. subatmospheric pressure
e. subalveolar pressure
A. INTRAPULMONARY PRESSURE
Alveolar ventilation (Va) refers to the:
a. movement of air into and out of the lungs
b. movement of dissolved gasses from the alveoli to the blood
c. amount of air reaching the alveoli each minute
d. movement of dissolved gases from the blood to the alveoli
e. utilization of oxygen by alveolar cells to support metabolism
C. AMOUNT OF AIR REACHING THE ALVEOLI EACH MINUTE
Compare dysplasia, metaplasia, neoplasia, and anaplasia
a. anaplasia is the development of abnormal cells; neoplasia is the development of abnormal changes in tissue structure; metaplasia is the conversion of normal cells to tumor cells; and dysplasia is he spread of the malignant cells throughout the body
i gave up with the rest
B. DYSPLASIA IS THE DEVELOPMENT OF ABNORMAL CELLD; METAPLASIA IS THE DEVELOPMENT OF ABNRMAL CHANGES IN TISSUE STRUCTURE; NEIPLASIA IS THE CONVERSION OF NORMAL CELLS TO TUMOR CELLS; ANAPLASIA IS THE SPREAD OF THE MALIGNANT CELLS THROUGHOUT THE BODY
Asthma is:
a. a collapsed lung
b. an acute condition resulting from unusually sensitive, irritated conducting airways
c. characterized by fluid buildup in the alveoli
d. an obstructive tumor
e. caused by M. tuberculosis
B. AN ACUTE CONDITION RESULTING FROM UNUSUALLY SENSITIVE, IRRITATED CONDUCTING AIRWAYS
Harry suffers from cystic fibrosis and has severe breathing difficulties. His problems result from
a. uncontrollable laryngospasms
b. inability of the respiratory defense mechanism to transport mucus
c. production of thick secretions that are difficult to transport
d. both the inability of the respiratory defense mechanism to transport mucus and the production of thick secretion that are difficult to transport
D. BOTH THE INABILITY OF THE RESPIRATORY DEFENSE MECHANISM TO TRANSPORT MUCUS AND THE PRODUCTION OF THICK SECRETIONS THAT ARE DIFFICULT TO TRANSPORT
Secondary bronchi supply air to the
a. alveolar ducts
b. alveoli
c. lobules of the lungs
d. lungs.
e. lobes of the lung
E. LOBES OF THE LUNGS
The portion of the nasal cavity contained within the flexible tissues of the external nose is the
a. nasopharynx
b. nasal septum
c. vestibule
d. internal chamber
e. conchae
C. VESTIBULE
The ultimate function of pulmonary ventilation is to
a. provide adequate alveolar ventilation
b. prevent gas exchange in the bronchioles
c. supply oxygen to the blood
d. remove carbon dioxide from the blood
e. remove air from dead air space
A. PROVIDE ADEQUATE ALVEOLAR VENTILATION
The conchae
a. create turbulance in the air trap particulate matter in mucus
b. provide an opening into the pharynx
c. provide an opening ot paranasal sinuses
d. form part of the soft palate
e. divide the nasal cavity into a right and a left side
A. CREATE TURBULENCE IN THE AIR TO TRAP PARTICULATE MATTER IN MUCUS
The ___ extends from the larynx to the mediastinum
a. pharynx
b. primary bronchus
c. upper respiratory system
d. trachea
e. cricoid cartilage
TRACHEA
Boyle’s law state that gas volume is
a. inversely proportional to pressure
b. directly proportional to temperature
c. both directly proportional to pressure and directly proportional to temperature
d. directly proportional to pressure
e. inversely proportional to temperature
A. INVERSELY PROPORTIONAL TO PRESSURE
During swallowing, all of the following occur except
a. the larynx is elevated
b. the uvula rises to block the oropharynx
c. liquids are prevented from entering the respiratory tract
d. solids are prevented from entering the respiratory tract
e. the epiglottis folds over the glottis
B. THE UVULA RISES TO BLOCK THE OROPHARYNX
The normal rate and depth of breathing is established by all of the following except the
a. dorsal respiratory group (DRG)
b. apneustic center in the pons
c. pneumotaxic center in the pons
d. ventral respiratory group (VRG)
e. breathing cortex of the cerebrum
E. BREATHING CORTEX OF THE CEREBRUM
The process by which dissolved gases are exchanged between the blood and interstitial fluids is;
a. breathing
b. cellular respiration
c. internal respiration
d. pulmonary ventilation
e. external respiration
C INTERNAL RESPIRATION
What function do the C-shaped tracheal cartilages allow?
a. allow room for the trachea to expand if you inhale a large volume if air
b. allow the trachea to collapse on itself when no inhalation or exhalation is occurring to reduce space in the mediastinum
c. allow room for the esophagus to expand during swallowing
d allow gas diffusion to occur around the cartilage surfaces and the tissues of the mediastinum
e. allow room for blood pulses to expand the common carotid artery without interfering with air flow
C. ALLOW ROOM FOR THE ESOPHAGUS TO EXPAND DURING SWALLOWING
Which of the following is the best explanation for the C shape of the tracheal cartilages?
a. large masses of food constrict during an asthma attack
c. large masses of air can pass through the trachea
d. it facilitates turning of the head
e. cartilage can change shape during sympathetic activation.
A. LARGE MASSES OF FOOD CAN PASS THROUGH THE ESOPHAGUS DURING SWALLOWING
What effect does inhibition of osmoreceptors have on ADH secretion and thirst?
a. increased ADH secretion and increased thirst
b. increased ADH secretion but no change in thirst
c. increased ADH secretion and suppressed thirst
d. decreased ADH secretion and increased thirst
e. decreased ADH secretion and suppressed thirst
E. DECREASED ADH SECRETION AND SUPPRESSED THIRST
Normal K+ concentration in extracellular fluid si ___ mEq/L
a. 1.5
b. 3.5-5.0
c. 1.5-3.0
d. 135
e. 5.5-7
B. 3.5 - 5.0
Prolonged vomiting can result in
a. metabolic alkalosis
b. respiratory alkalosis
c. metabolic acidosis
d. Respiratory acidosis
A. METABOLIC ALKALOSIS
describe metabolic acidosis.
a. pH increases due to the removal of hydrogen ions when bicarbonate ion concentrations are elevated
b. pH increases due to an impaired ability to remove CO2 by the lungs
c. pH increases due to faster CO2 elimination by the lungs that production
d. pH decreases due to increased numbers of fixed and metabolic acids, from bicarbonate loss, or from depletion of bicarbonate reserve when hydrogen ions are not adequately excreted by the kidneys
e. pH decreases due to an impaired ability to remove CO2 by the lungs
D. METABOLIC ACIDOSIS OCCURS WHEN pH DECREASES DUE TO INCREASED NUMBERS OF FIXED AND METABOLIC ACIDS, FROM BICARBONATE LOSS, OR FROM DEPLETION OF BICARBONATE RESERVE WHEN HYDROGEN IONS ARE NOT ADEQUATELY EXCRETED BY THE KIDNEYS
The normal pH range for extracellular fluid is:
a. 7.15-7.25
b. 7.25-7.35
c. 6.95-7.00
d. 7.35-7.45
e. 7.45-7.55
D. 7.35-7.45