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MSN 570 Patho Midterm
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Exam Review Questions
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and correct solutions
2024
, respiratory zone - ANSWER respiratory bronchioles, alveolar ducts, alveoli
What does the Respiratory Zone do? - ANSWER Allow inhaled oxygen to diffuse
into the lung capillaries in exchange for CO2
Conducting Zone - ANSWER nose, pharynx, larynx, trachea, bronchi, bronchioles
What does conducting zone do? - ANSWER conducts air to respiratory zone,
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humidifies, warms, and filters air
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Most common cancer mutation? - ANSWER Acquired
What does anticholinergic mean? - ANSWER blockade of muscarinic receptors -
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This inhibits nerve impulses responsible for involuntary muscle movements and various
bodily functions
What does dopamine do? - ANSWER influences movement, learning, attention, and
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emotion. Dopamine enables neurons in your brain to communicate and control
movement.
What does messenger RNA do? - ANSWER Transcribes information from the DNA
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in the nucleus and carries it to the cytoplasm, and then to the ribosome.
Single-stranded, intermediate molecule. Carries the instructions for making proteins.
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What do ribosomes do? - ANSWER Make proteins (protein synthesis)
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Neurotransmitters - ANSWER chemical messengers that cross the synaptic gaps
between neurons
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Neurotransmitters at the parasympathetic postganglionic synapses - ANSWER
Acetylcholine and nitric oxide
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Atropine Neurotransmitters - ANSWER Atropine is a muscarinic receptor antagonist
that is used to inhibit the effects of excessive vagal activation on the heart, which is
manifested as sinus bradycardia and AV nodal block. Therefore, atropine can
temporarily revert sinus bradycardia to normal sinus rhythm and reverse AV nodal
blocks by removing vagal influences.
alpha adreneric receptors - ANSWER