Biophysics: Electromedicine
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University
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36 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is not an oscilloscope used to measure?
Measures voltage
Measures time
Measures acceleration of electrons
Measures frequency
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Luminescence is not caused by:
Chemical particles
Biochemical particles
Motion of subatomic particles
Temperature of the particles
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following statements regarding a cathode ray oscilloscope is true?
The function of the cathode is to accelerate the electrons
The function of the anode is thermionic emission of electrons
The function of the grid is to focus the electron beam to a point on the screen
The function of the screen is to produce fluorescence when electrons strike it
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Convert units: 1Hz =
1kHz
1 MHz
0,01kHz
0,001 kHz
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Convert units 1 µs
1 ms
0,1 ms
0,01 ms
0,001 ms
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens during depolarization?
Cells become more negative inside
Cells become more positive inside
Plateau phase occurs
Resting membrane potential occurs
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What causes depolarization and reversal of the membrane potential in a pacemaker cell?
Influx of sodium ions
Influx of calcium ions
Efflux of potassium ions
Efflux of calcium ions
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