Physiology Of Respiratory

Front 1

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

Back 1

c) the intrapulmonary pressure is greater than the intrapleural pressure

Front 2

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

Back 2

d) all

Front 3

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

Back 3

c) the vital capacity

Front 4

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

Back 4

a) the arterial Po2 would be normal

Front 5

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

Back 5

c) th eO2 content of the whole blood would be 3x normal

Front 6

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

Back 6

c) venous oxyhemoglobin saturation

Front 7

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

Back 7

b) decrease in th earterial Pco2

Front 8

Erythropoietin is produced by

a)the kidneys b)the liver c)the lungs d)the bone marrow

Back 8

a) the kidneys

Front 9

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

Back 9

e)all

Front 10

MOst of the carbon dioxide in the blood is carried in the form of

a)dissolved CO2 b)carbinohemoglobin c0bicarbonate d)carboxyhemoglobin

Back 10

c)bicarbonate

Front 11

The bicarbonate concentration in the blood would be decreased during

a)metabolic acidosis b)respiratory acidosis c)metabolic alkalosis d)respiratory alkalosis

Back 11

a) metabolic acidosis

Front 12

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

Back 12

c) H+ in cerebralspinal fluid derived from blood CO2

Front 13

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

Back 13

a)medulla oblongata

Front 14

Which of these occur(s) during hypoxemia

a)increased ventilation b)increased production of 2,3-DPG c)increased production of erythropoietin d)all

Back 14

d) all

Front 15

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

Back 15

b) the venous percent of oxyhemoglobin saturation is decreased

Front 16

All of these can bond with hemoglobin except

a)HCO3- b)O2 c) H+ d)CO2 e)NO

Back 16

a)HCO3-

Front 17

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

Back 17

c) it's higher in the systemic veins than in the systemic arteries