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WorksheetsEC8073_ME_Weekly_Quiz_1(24.07.2020)
Total questions: 20
Worksheet time: 20mins
Name
Class
Date
1.
1.______________ is the subset of Biomedical Engineering that deals the topics related to the principles of design and development of diagnostic, therapeutic and assist instruments.
a)
Medical Electronics & Instrumentation
b)
Bio-Mechanics
c)
Bio-Informatics
d)
Bio-Technology
2.
2.The Electric potential that are developed across the cell membrane due to the chemical activity of certain excitable cells are known as ______________.
a)
Biological currents
b)
Bio-potential
c)
Ionic potential
d)
Biochemical potential
3.
3.The fluids inside the cell are called extracellular fluid and those that are present outside are known as intra cellular fluid.True or False?
a)
true
b)
false
4.
4.ICF is rich in K+, Mg++, phosphates and ECF is rich in Na+, Cl-.True or False?
a)
true
b)
false
5.
5. The average value of the resting potential of a normal,grown adult man is about____________.
a)
(-)110 mv
b)
(-)70 mv
c)
(-)40 mv
d)
(-)20 mv
6.
6. The resting state of the cell, in which the ECF contains more Na+ ions and ICF contains more K+ ions and giving rise to resting potential is called_____________.
a)
Polarised State
b)
Depolarised State
c)
Unpolarised State
d)
Extrapolarised State
7.
7. The maximum value of the action potential never exceeds ____________, irrespective of the intensity of the excitation.
a)
20 mv
b)
30 mv
c)
120 mv
d)
220 mv
8.
8. Suppose if the bio-potential is measured across a cell's membrane and if the voltmeter reads a positive voltage about 20mv, it means the cell is undergoing a________________.
a)
Polarisation
b)
Depolarisation
c)
Potential building
d)
Voltage Dropping
9.
9.The cycle of the exchange of ions between the fluids inside and outside the cell is known as______________.
a)
Oxygen Pump
b)
Sodium-Potassium Pump
c)
Cycle Pump
d)
Ionic Pump
10.
10.With reference to the Na-K Pump, Total Refractory Period, Absolute Refractory Period and Relative Refractory period are Related as_______________.
a)
TRP=RRP-ARP
b)
TRP= ARP-RRP
c)
TRP=ARP+RRP
d)
TRP=ARP/RRP
11.
11.The rate at which an action potential moves down a fiber or is propagated from cell to cell is called the ____________________.
a)
Propagation rate
b)
Communication rate
c)
Conduction rate
d)
Commision Rate
12.
12.Devices that are used to pick up the voltages developed are called ______________.
a)
Electrodes
b)
Probes
c)
Scope
d)
Recorders
13.
13.In case of picking up of biological signals, __________ electrode(s) is/are used as the measuring surface is an electrode-electrolyte interface.
a)
only one
b)
two
c)
more than two
d)
zero
14.
14.The voltage developed at an electrode-electrolyte interface is known as ______________.
a)
Off cell potential
b)
Half-cell potential.
c)
Full cell potential
d)
Double layer potential
15.
15.In bio potential recording, the metal tip of the electrode that comes in contact with body fluids forms a double layer of charge at the interface will act as a ____________.
a)
Capacitor
b)
Resistor
c)
Inductor
d)
Radio Frequency Choke
16.
16.The DC voltage due to the difference in electrode potential is called the _________________.
a)
Electrode Remainder Voltage
b)
Electrode Residual Voltage
c)
Electrode Error Voltage
d)
Electrode Offset Voltage
17.
17. The most widely used metal in the formation of bio-signal elctrodes are ____________.
a)
Ag/AgCl
b)
ZnCl
c)
HgCl
d)
Platinum-Nickel Alloy
18.
18. Micropippete and Metal Micro electrodes are used to measure electric potential across a Single Living Cell.True or False?
a)
true
b)
false
19.
19.While using surface electrodes, befoe placing them on the skin surface, the area is cleaned and ______________ is applied, to reduce the skin impedance towards the measurement.
a)
Electrolyte Gel
b)
Rust powder
c)
Moisturising Cream
d)
Salt and Pepper
20.
20._______________ are preferred to pick up body voltages from the deeper tissues of body organs.
a)
Micro electrodes
b)
Surface Electrodes
c)
Needle Electrodes
d)
Floating Electrodes
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