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APHY 102 Test 3 Questions and Answers 2024 Graded A+

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APHY 102 Test 3 Questions and Answers 2024 Graded A+ Which of the following is important in maintaining the pH of blood? a Oxygen b Phosphate c Nitrogen d Carbon dioxide d. carbon dioxide Which of the following factors does not directly affect breathing rate? a pH b Partial pressur...

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  • April 27, 2024
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  • 2023/2024
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APHY 102 Test 3 Questions and Answers 2024
Graded A+
Which of the following is important in maintaining the pH of blood?

a Oxygen
b Phosphate
c Nitrogen
d Carbon dioxide
d. carbon dioxide


Which of the following factors does not directly affect breathing rate?

a pH
b Partial pressure of oxygen in
body fluids.
c Degree of lung tissue stretch
d Partial pressure of carbon
dioxide in body fluids.
a pH


The first event in inspiration is

a atmospheric pressure forces
air into the respiratory tract.
b lung inflation.
c the diaphragm moves
downward and the external
intercostal muscles contract.
d decreased intra-alveolar
dpressure.
c the diaphragm moves
downward and the external
intercostal muscles contract.


The walls of the alveoli are composed of

a stratified squamous
epithelium.
b ciliated columnar epithelium.
c areolar connective tissue.
d simple squamous epithelium.
d simple squamous epithelium.


The respiratory control areas are in the

a hypothalamus and
hippocampus.
b pons and medulla
oblongata.
c cerebral cortex.
d alveoli.
b pons and medulla

, oblongata.


The inflation reflex is activated when stretch receptors are stimulated during inspiration.

True
False
true


In bronchopulmonary dysplasia, the lungs of newborns become inflamed and scarred. Most infants
recover, but some die. An experimental treatment cultures stem cells from a newborn's umbilical
cord. The stem cells, in a lab dish, give rise to type II cells, which in turn give rise to more type I cells.
In this treatment
a the type II cells secrete
surfactant and the type I
cells form the respiratory
membrane.
b the type I cells secrete
surfactant and the type II
cells form the respiratory
membrane.
c the stem cells directly
replace alveoli.
d both type I and type II cells
produce surfactant.
a the type II cells secrete
surfactant and the type I
cells form the respiratory
membrane.


Exposure to secondhand smoke can cause or increase risk of

a high altitude sickness and
sleep apnea.
b heart disease, lung cancer,
and low birth weight.
c pneumonia and tuberculosis.
d sarcoidosis, multiple
sclerosis, and vasculitis
b heart disease, lung cancer,
and low birth weight.


Breathing functions to

a deliver oxygen to cells, where it takes part in the
reactions of cellular respiration that liberate energy
from waste molecules.
b inflate the lungs, which forces oxygen molecules into the
bloodstream.
c deliver oxygen to cells, where it takes part in the
reactions of cellular respiration that liberate energy
from nutrient molecules and get rid of carbon dioxide,
which maintains the pH of the internal environment.
d deliver carbon dioxide to cells, where it takes part in

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