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Bio 235 Final Exam Questions and Answers 2024.docx
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Bio 235 Final Exam Questions and Answers
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exchanged in the upper respiratorytract
Bio 235 Final b) air is taken in through the upper
Exam Questions respiratory tract, and CO2/O2 are
exchanged in the lower respiratory
and answers 2024 tract
c) CO2 is removed from circulation
Venous blood returning from in the upper respiratory tract
systemic circulation first enters the ,
proceeds to the , loses and d) O2 is removed from circulation in
gains in the lungs, and then the lower respiratory tract - B. Air is
returns to the heart via the . taken in through the upper respiratory
tract, and CO2/O2 are exchanged in
the lower respiratory tract
a) right atrium, right ventricle,
pulmonary artery, CO2, O2,
pulmonary veins. Smooth muscle surrounds which
structure of the lower respiratory
b) Left atrium, left ventricle, tract?
pulmonary artery, CO2, O2,
aorta a) Alveoli
c) Right atrium, right b) Alveolar capillaries
ventricle, pulmonary artery, c) Terminal bronchioles
O2, CO2, pulmonary veins
d) Trachea - C. terminal bronchioles
d) Left atrium, right ventricle,
pulmonary veins, O2, CO2, aorta -
A. Right atrium, right ventricle, In the alveolus, squamous
pulmonary artery, CO2, O2, epithelial cells are responsible for
pulmonary veins , while cells are responsible
for .
The upper respiratory tract differs a) Type 1; surfactant secretion;
from the lower respiratory tract in Type 2, gas exchange
what way? b) type 1; debris removal; type 2;
A) air is taken in through the lower surfactant secretion
respiratory tract, and CO2/O2 are
,c) type 3; debris removal; type 1; c) diaphragm & inspiratory
gas exchange intercostals contract, lungs expand, air
d) type 1; gas exchange; type 2: flows into alveoli
surfactant secretion - d) type 1; gas d) diaphragm & expiratory
exchange; type 2: surfactant secretion intercostals relax, lungs contract, air
flows out of alveoli - c) diaphragm &
inspiratory intercostals contract, lungs
There is no net air flow into or out of expand, air flows into alveoli
the lungs when
a) P alveolus = P atmostpher
the main determiners of lung
b) P alveolus< P atmostphere compliance are
c) P pleural wall > P atmostphere a) lung tissue thickness, surface
d) P atmosphere< P pleural wall - a) tension of fluid on the inner lung
P alveolus = P atmosphere surface
b) lung tissue perforations, surface
tension of fluid on the inner lung
What keeps the lungs from collapsing surface
c) lung tissue surface area, surface
Check the - b) trans pulmonary tension of fluid on the inner lung
negative pressure caused by negative surface
pressure from pleural cavity d) lung tissue thickness, surface
tension of fluid on the outer lung
surface - a) lung tissue thickness,
Identify the correct sequence of
surface tension of fluid on the inner
events for inspiration lung surface
a) diaphragm & inspiratory
intercostals relax, lungs expand,
air flows into alveoli lung compliance is defined as
b) diaphragm & inspiratory a) lung volume/ transpulmonary
intercostals contract; lungs expand, pressure
air flows out of the alveoli b) transpulmonary pressure/ lung
volume
,c) transthoracic pressure/ atmospheric which structure is NOT part of the
pressure "anatomical dead space?"
d) none of the above - d) none of the a) bronchiole
above
b) trachea
c) bronchus
trained athletes tend to have
d) respiratory
a) increased lung compliance bronchiole - d)respiratory
b) normal lung compliance bronchiole
c) decreased lung compliance
d) asthma - a) increased lung the volume of air flowing into the
compliance alveoli during inhalation/inspiration is
increased when there is an increase in
which of these?
which is true abbout the pleural sac a) air resistance
a) it is continuous with the atmosphere b) the pressure gradiant from
and protects the lungs from infections the atmosphere to the alveoli
b) it is a closed sac surrounding each c) the pressure in the intrapleural
lung and contains only a tiny volume space
of lubricating fluid
d) the curvature of the diaphragm -
c) it is a closed sac surrounding each b)the pressure gradiant from the
lung and contain a large volume of atmosphere to the alveoli
surfactact
d) it is a closed, air-filled space
surrounding both lungs that has a under normal circumstances, which of
negative pressure compared to the following would result from an
atmospheric pressure - b) it is a closed increase in transpulmonary pressure?
sac surrounding each lung and a) inhalation/inspiration
contains only a tiny volume of
b) exhalation/expiration
lubricating fluid
c) a collapsed lung
d) emphysema - a)
inhalation/inspiration
, c) intrapleural pressure becomes less
which of the following statements negative
about the response of arteriole smooth
muscle to changing ocygen partial d) the diaphragm relaxes - b)
pressure is true? intrapleural pressure is greater than
alveolar pressure
a) both systemic and pulmonary
arterioles respond to a decrease in
PO2 by constricting which true regarding how gases
b) both systemic and pulmonary dissolve in liquids?
arterioles respond to a decrease in a0 the concentration of a gas in a
PO2 by dilating liquid equilibrates to match the
c) systemic arterioles respond to a concentration of that gas in the air to
decrease in PO2 by dilating but which of the liquid is exposed
pulmonary arterioles constrict in b) different gasses have the
response to decreased PO same solubility in liquids
d) systemic arterioles respond to a c) the partial pressure of a gas in a
decrease in PO2 by constricting but liquid is equal to the amount greatly
pulmonary arterioles dilate in diffusing in the liquid plus the
response to decreased PO2 - c) amount bound to large molecules
systemic arterioles respond to a within the liquid
decrease in PO2 by dilating but
d) the partial pressure of a particular
pulmonary arterioles constrict in
gas in a liquid equilibrates to match
response to decreased PO
the partial pressure o that gas in the
air to which the liquid is exposed - d)
during an unforced the partial pressure of a particular gas
exhalation/expiration, which would in a liquid equilibrates to match the
NOT be true? partial pressure o that gas in the air to
which the liquid is exposed
a) alveolar pressure is greater
than atmospheric pressure
b) intrapleural pressure is greater than which of these results from
alveolar pressure hyperventilation?
a) increased alveolar PCO2 and
decreased alveolar PO2
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