Venous blood returning from systemic circulation first enters the ___, proceeds to the ____, loses
___and gains ____ in the lungs, and then returns to
... [Show More] the heart via the ____.
a) right atrium, right ventricle, pulmonary artery, CO2, O2, pulmonary veins.
b) Left atrium, left ventricle, pulmonary artery, CO2, O2, aorta
c)Right atrium, right ventricle, pulmonary artery, O2, CO2, pulmonary veins
d) Left atrium, right ventricle, pulmonary veins, O2, CO2, aorta Correct Answer- A. Right atrium, right
ventricle, pulmonary artery, CO2, O2, pulmonary veins
The upper respiratory tract differs from the lower respiratory tract in what way?
A) air is taken in through the lower respiratory tract, and CO2/O2 are exchanged in the upper respiratory
tract
b) air is taken in through the upper respiratory tract, and CO2/O2 are exchanged in the lower respiratory
tract
c) CO2 is removed from circulation in the upper respiratory tract
d) O2 is removed from circulation in the lower respiratory tract Correct Answer- B. Air is taken in
through the upper respiratory tract, and CO2/O2 are exchanged in the lower respiratory tract
Smooth muscle surrounds which structure of the lower respiratory tract?
a) Alveoli
b) Alveolar capillaries
c) Terminal bronchioles
d) Trachea Correct Answer- C. terminal bronchioles
In the alveolus, ____squamous epithelial cells are responsible for ___, while ___cells are responsible for
____.
a) Type 1; surfactant secretion; Type 2, gas exchange
b) type 1; debris removal; type 2; surfactant secretionc) type 3; debris removal; type 1; gas exchange
d) type 1; gas exchange; type 2: surfactant secretion Correct Answer- d) type 1; gas exchange; type 2:
surfactant secretion
There is no net air flow into or out of the lungs when
a) P alveolus = P atmostpher
b) P alveolus< P atmostphere
c) P pleural wall > P atmostphere
d) P atmosphere< P pleural wall Correct Answer- a) P alveolus = P atmosphere
What keeps the lungs from collapsing [Show Less]