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Biophysics

Biophysics Bible

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Flashcards	406
Students	15
Language	English
Category	Medical
Level	University
Created / Updated	29.01.2019 / 12.02.2022
Weblink	https://card2brain.ch/box/20190129_biophysics
Embed	<iframe src="https://card2brain.ch/box/20190129_biophysics/embed" width="780" height="150" scrolling="no" frameborder="0"></iframe>

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414. Which electrocardiogram wave can be attributed to the atrial diastole

a) Q

b) R

c) S

d) T

e) none

415. The incoming acoustic stimulus has induced a deformation of the basilar membrane very close to the oval window. We may deduce that the detected voice

a) Is characterized by a low frequency

b) Is characterized by a high intensity level

c) Is characterized by a high frequency

d) Is characterized by a low intensity level

e) Is characterized by a short time duration

416. The mechanism underlying "one way" propagation of action potential is:

a. desensitization of acetylcholine receptor channels

b. very fast repolarization of membrane

c. inactivation of sodium channels

d. inactivation of potassium channels

417. Indicate which effect on the action potential time course would have the impairment of the inactivation process (ex. scorpion venom) in the voltage-gated sodium channel?

a) smaller amplitude

b) faster onset kinetics

c) slower onset kinetics

d) faster repolarization

e) slower repolarization

418. Choose the proper association:

A. P wave – depolarization of atria, T wave – depolarization of ventricles

B. P wave – repolarization of atria, T wave – repolarization of ventricles

C. P wave – depolarization of atria, QRS waves – depolarization of ventricles

D. P wave – depolarization of ventricles, T wave- repolarization of ventricles

E. P wave – depolarization of atria, QRS waves – repolarization of atria

419. How much the sound intensity must increase to produce the sensation of increase in loudness by 200%