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BMS 300 EXAM 4 QUESTIONS AND ANSWERS
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BMS 300 EXAM 4 QUESTIONS ANDANSWERS
Gas exchange occurs in the - ANSWER alveolar sacs.
Deoxygenated blood reaches the lungs from the - ANSWER
Haemoglobin is said to be saturated - ANSWER
The formation of water and carbon dioxide from carbonic acid is catalyzed by -
ANSWER
Chemoreceptors in the medulla regulate respiratory rate based on the: -
ANSWER
What effect does the layer of water overlaying epithelial cells of the alveoli
have on surface tension? - ANSWER increases Surface tension
The elastic recoil of the lungs back to their original volume is an active process
- ANSWER false
What is the role of the type I pneumocytes? - ANSWER Responsible for gas
exchange that takes place in the alveoli
When exposed to an allergen, ______ can bind a fragment of that component
through its antibody__________ on the apical surface. This binds and causes
the release of ___________.There are receptors on the smooth muscle that can
, bind that compound and the muscle ______________ which decreases the
radius of the vessel. - ANSWER mast cells
IgE
histamine
contracts
The diaphragm is _____________ muscle which is depolarized by the
neurotransmitter ______________ which binds to ____________ receptors. -
ANSWER skeletal, acetylcholine, nicotinic
When the shape of a curve is sigmoidal this indicates what? - ANSWER
cooperative binding
Oxygen moves from the _____________ to the ________________, which is
from high concentration to low concentration - ANSWER Alveoli, pulmonary
capillaries
The atmospheric pressure in Fort Collins is about 630 mmHg. You would
expect the atmospheric pressure in Death Valley, which is below sea level, to
be: - ANSWER greater than 630 mmhg
The escape of carbon dioxide and resulting flatness of your beverage when
opening a nice cold "soda" is an example of: - ANSWER henrys law
By lowering the surface tension, surfactant (soap): - ANSWER increase lung
compliancedecrease lung elastic recoil
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