NEW BIOL 235 final Exam LATEST
EXAM2023-2024 REAL
EXAM 300 QUESTIONS AND CORRECT
ANSWERS (VERIFIED
ANSWERS)|AGRADE
SET 1
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 .
b) it is a closed sac surrounding each lung and contains only a tiny volume of lubricating
fluid
c) it is a closed sac surrounding each lung and contain a large volume of surfactact
d) it is a closed, air-filled space surrounding both lungs that has a negative pressure
compared to atmospheric pressure - b) it is a closed sac surrounding each lung and
contains only a tiny volume of lubricating fluid
which structure is NOT part of the "anatomical dead space?"
a) bronchiole
b) trachea
c) bronchus
d)respiratory bronchiole - d)respiratory bronchiole
the volume of air flowing into the alveoli during inhalation/inspiration is increased when
there is an increase in which of these?
a)air resistance
b)the pressure gradiant from the atmosphere to the alveoli
c) the pressure in the intrapleural space
d) the curvature of the diaphragm - b)the pressure gradiant from the atmosphere to the
alveoli
under normal circumstances, which of the following would result from an increase in
transpulmonary pressure?
a) inhalation/inspiration
b) exhalation/expiration
c) a collapsed lung
d) emphysema - a) inhalation/inspiration
which of the following statements about the response of arteriole smooth muscle to
changing ocygen partial pressure is true?
a) both systemic and pulmonary arterioles respond to a decrease in PO2 by constricting
b) both systemic and pulmonary arterioles respond to a decrease in PO2 by dilating
c) systemic arterioles respond to a decrease in PO2 by dilating but pulmonary arterioles
constrict in response to decreased PO
d) systemic arterioles respond to a decrease in PO2 by constricting but pulmonary
arterioles dilate in response to decreased PO2 - c) systemic arterioles respond to a
decrease in PO2 by dilating but pulmonary arterioles constrict in response to decreased
PO
during an unforced exhalation/expiration, which would NOT be true?
a) alveolar pressure is greater than atmospheric pressure
b) intrapleural pressure is greater than alveolar pressure
c) intrapleural pressure becomes less negative
d) the diaphragm relaxes - b) intrapleural pressure is greater than alveolar pressure
which true regarding how gases dissolve in liquids?
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