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Bio 235 Final Exam Questions and answers 2024
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Venous blood returning from systemic circulation first enters the ___, proceeds to the ____, loses ___and gains ____ in the lungs, and then returns to the heart via the ____. a) right atrium, right ventricle, pulmonary artery, CO2, O2, pulmonary veins. b) Left atrium, left ventricle, pulmonary ...

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  • August 29, 2024
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  • bio 235 final exam questions and answers 2024

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exchanged in the upper respiratory
tract
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 in
Venous blood returning from systemic the upper respiratory tract
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 ventricle,
pulmonary artery, O2, CO2, b) Alveolar capillaries
pulmonary veins c) Terminal bronchioles
d) Left atrium, right ventricle, d) Trachea - C. terminal bronchioles
pulmonary veins, O2, CO2, aorta - A.
Right atrium, right ventricle,
pulmonary artery, CO2, O2, In the alveolus, ____squamous
pulmonary veins epithelial cells are responsible for
___, while ___cells are responsible
for ____.
The upper respiratory tract differs
from the lower respiratory tract in a) Type 1; surfactant secretion; Type
what way? 2, gas exchange

A) air is taken in through the lower b) type 1; debris removal; type 2;
respiratory tract, and CO2/O2 are surfactant secretion

,c) type 3; debris removal; type 1; gas c) diaphragm & inspiratory
exchange intercostals contract, lungs expand, air
flows into alveoli
d) type 1; gas exchange; type 2:
surfactant secretion - d) type 1; gas d)diaphragm & expiratory intercostals
exchange; type 2: surfactant secretion relax, lungs contract, air flows out of
alveoli - c) diaphragm & inspiratory
intercostals contract, lungs expand, air
There is no net air flow into or out of 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) P tension of fluid on the inner lung
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, air pressure
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 bronchiole -
a) increased lung compliance d)respiratory bronchiole
b) normal lung compliance
c) decreased lung compliance the volume of air flowing into the
alveoli during inhalation/inspiration is
d) asthma - a) increased lung
increased when there is an increase in
compliance
which of these?
a)air resistance
which is true abbout the pleural sac
b)the pressure gradiant from the
a)it is continuous with the atmosphere atmosphere to the alveoli
and protects the lungs from infections
c) the pressure in the intrapleural
b) it is a closed sac surrounding each space
lung and contains only a tiny volume
d) the curvature of the diaphragm -
of lubricating fluid
b)the pressure gradiant from the
c) it is a closed sac surrounding each atmosphere to the alveoli
lung and contain a large volume of
surfactact
under normal circumstances, which of
d) it is a closed, air-filled space
the following would result from an
surrounding both lungs that has a
increase in transpulmonary pressure?
negative pressure compared to
atmospheric pressure - b) it is a closed a) inhalation/inspiration
sac surrounding each lung and
b) exhalation/expiration
contains only a tiny volume of
lubricating fluid c) a collapsed lung
d) emphysema - a)
inhalation/inspiration

, c) intrapleural pressure becomes less
negative
which of the following statements
about the response of arteriole smooth d) the diaphragm relaxes - b)
muscle to changing ocygen partial intrapleural pressure is greater than
pressure is true? alveolar pressure
a) both systemic and pulmonary
arterioles respond to a decrease in
which true regarding how gases
PO2 by constricting
dissolve in liquids?
b) both systemic and pulmonary
a0 the concentration of a gas in a
arterioles respond to a decrease in
liquid equilibrates to match the
PO2 by dilating
concentration of that gas in the air to
c) systemic arterioles respond to a which of the liquid is exposed
decrease in PO2 by dilating but
b) different gasses have the same
pulmonary arterioles constrict in
solubility in liquids
response to decreased PO
c) the partial pressure of a gas in a
d) systemic arterioles respond to a
liquid is equal to the amount greatly
decrease in PO2 by constricting but
diffusing in the liquid plus the amount
pulmonary arterioles dilate in
bound to large molecules within the
response to decreased PO2 - c)
liquid
systemic arterioles respond to a
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)
the partial pressure of a particular gas
during an unforced in a liquid equilibrates to match the
exhalation/expiration, which would partial pressure o that gas in the air to
NOT be true? which the liquid is exposed
a) alveolar pressure is greater than
atmospheric pressure
which of these results from
b) intrapleural pressure is greater than hyperventilation?
alveolar pressure
a) increased alveolar PCO2 and
decreased alveolar PO2

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