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17 Cards in this Set

  • Front
  • Back
Which of these statements about intrapulmonary pressure and intrapleural pressure is true

a)The intrapulmonary pressure is always subatmospheric b)the intrapleural pressure is always greater than the intrapulmonary pressure c)the intrapulmonary pressure is always greater than the intraplueral pressure d)the intrapulmonary pressure equals the atmospheric pressure
c) the intrapulmonary pressure is greater than the intrapleural pressure
If th etranspulmonary pressure equals zero than

a)a pneumothorax has probably occrued b)the lungs cannot inflate c)elastic recoil causes the lungs to collapse d)all
d) all
The max. amt of air that can be expired after a max. inhilation is

a)the tidal volume b)the forced expiratory vol. c)the vital capacity d)the max. expiratory flow rate
c) the vital capacity
If the blood lacked red blood cells but the lungs were functioning normally

a)the arterial Po2 would be normal b)the o2 content of the arterial blood would be normal c)A&B d)neither AorB
a) the arterial Po2 would be normal
If a person were to dive w/ scuba equipment to a depth of 66 ft, which of these statements is false

a)the arterial Po2 would be 3x normal b)the O2 content of plasma would be 3x normal c)the O2 content of the whole blood would be 3x normal
c) th eO2 content of the whole blood would be 3x normal
Which of the se would be most affected by a decrease in the affinity of hemoglobin for O2

a)arterial Po2 b)arterial percent oxyhemoglobin saturation c)venos oxyhemoglobin saturation d)arterial Pco2
c) venous oxyhemoglobin saturation
If a person with normal lung function were to hyperventilate for several seconds there would be a significant

a)increase in arterial Po2 b)decrease in arterial Pco2 c)increase in the arterial percent oxyhemoglobin saturation d)decrease in arterial pH
b) decrease in th earterial Pco2
Erythropoietin is produced by

a)the kidneys b)the liver c)the lungs d)the bone marrow
a) the kidneys
The affinity of hempglobin for oxygen is decreased under conditions of

a)acidosis b)fever c)anemia d)acclimatization to a high altitude e)all
MOst of the carbon dioxide in the blood is carried in the form of

a)dissolved CO2 b)carbinohemoglobin c0bicarbonate d)carboxyhemoglobin
The bicarbonate concentration in the blood would be decreased during

a)metabolic acidosis b)respiratory acidosis c)metabolic alkalosis d)respiratory alkalosis
a) metabolic acidosis
The chemoreceptors in the medulla are directly stimulated by

a)CO2 from the blood b)H+ from the blood c)H+ in cerebralspinal fluid that is derived from blood CO2 d)decreased arterial Po2
c) H+ in cerebralspinal fluid derived from blood CO2
The rhythmic control of breathing is produced by the activity of the inspiratory and expiratory neurons in the

a)medulla oblongata b)apneuistic ctr of the pons c)the pneumotaxic ctr of the pons d)the cerebral cortex
a)medulla oblongata
Which of these occur(s) during hypoxemia

a)increased ventilation b)increased production of 2,3-DPG c)increased production of erythropoietin d)all
d) all
During excercise which of these statements is true

a)the arterial percent oxyhemoglobin saturation is decreased b)the venous percent oxyhemoglobin saturation is decreased c)the arterial Pco2 is measurably increased d)the arterial pH is measurably decreased
b) the venous percent of oxyhemoglobin saturation is decreased
All of these can bond with hemoglobin except

a)HCO3- b)O2 c) H+ d)CO2 e)NO
Which of these statements about the partial pressure of carbon dioxide is true

a)it's higher in the aveoli than in th epulmonary arteries b)it's higher in the systemic arteries than in the tissues c)it's higher in the systemic veins than in the systemic arteries d)it's higher in th epulmonary veins than in the pulmonary arteries
c) it's higher in the systemic veins than in the systemic arteries