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EC8073 ME - Unit I - Quiz

Total questions: 25

Worksheet time: 12mins

Name
Class
Date
1.

The voltage generated during resting potential are

a)

a) Postive

b)

b) negative

c)

c)Botha A and B

2.

Regardless of the method by which a cell is excited or the intensity of the stimulus (provided it is sufficient to activate the cell), the action potential is always the same for any given cell is called as

a)

all-or-nothing law

b)

Abosulte refractory period

c)

Relative refractory period

3.

Sodium pumping is used in which state

a)

Polarization

b)

Depolarization

c)

Repolarization

4.

After a cell is stimulated, a finite period of time is required for the cell to return to its pre-stimulus state. This period is known as ____________

a)

a) restoration period

b)

b) refactory period

c)

c) regain period

d)

d) regenerative period

5.

Electrodes make a transfer from the __________ in the tissue to the electronic conduction which is necessary to make measurements.

a)

a) electronic conduction

b)

b) ionic conduction

c)

c) electric conduction

d)

d) impulsive conduction

6.

Surface electrodes damage the living tissues.

a)

a) True

b)

b) False

7.

Deep-seated electrodes indicates the electric potential difference arising ________ the living tissues or cells.

a)

a) inside

b)

b) outside

c)

c) around

d)

d) adjacent

8.

Electrode paste ____________

a)

a) increases contact impedance

b)

b) equates contact impedance

c)

c) reduces contact impedance

d)

d) absorbs contact impedance

9.

What is the frequency range of ECG?

a)

a) 70-120 Hz

b)

b) 0.05-120 Hz

c)

c) 5-120 Hz

d)

d) 12-120 Hz

10.

Needle electrode is used to measure ____________

a)

a) EKG

b)

b) EEG

c)

c) EOG

d)

d) EMG

11.

hich of the following is not preferred for electrode making?

a)

a) Ag-AgCl

b)

b) Copper

c)

c) Stainless-steel

d)

d) Gold

12.

Silver -Silver Chloride electrodes are prepared by the process of ____________

a)

a) centrifugation

b)

b) etching

c)

c) manually

d)

d) electrolysis

13.

From instruments point of view, heart is a ______ system.

a)

a) pneumatic

b)

b) electric

c)

c) electronic

d)

d) hydraulic

14.

The basic functional unit of nervous system is ____________

a)

a) nerves

b)

b) axon

c)

c) neuron

d)

d) dendrite

15.

Which of the following is considered to be the primary pacemaker of the heart?

a)

a) sino-atrial node

b)

b) atrio-ventricular node

c)

c) purkinje fibres

d)

d) bundle of his

16.

Recording electrical activities associated with heart is known as ____________

a)

a) EEG

b)

b) EOG

c)

c) EMG

d)

d) ECG

17.

The contraction of the skeletal muscles results in the generation of action potential in the individual muscle fibers. Record of this action potential is called ______________

a)

a) ECG

b)

b) EMG

c)

c) EEG

d)

d) EKG

18.

Electrodes to measure EEG are placed on ________

a)

a) forehead

b)

b) scalp

c)

c) cheek

d)

d) ears

19.

According to the international 10/20 system to measure EEG, even number denotes which side of the brain?

a)

a) left

b)

b) top

c)

c) bottom

d)

d) right

20.

Normal EEG frequency range is _______

a)

a) 50-500Hz

b)

b) 0.5-50HZ

c)

c) 0.05-5Hz

d)

d) 1-200Hz

21.

The alpha wave in EEG ranges from ___________

a)

a) 0.5-4Hz

b)

b) 4-8Hz

c)

c) 8-13Hz

d)

d) 13-22Hz

22.

Disturbance in the EEG pattern resulting from the external stimuli is called ________

a)

a) provoked response

b)

b) ckoored response

c)

c) evoked response

d)

d) impulse response

23.

The letter T in the EEG electrode placement system denotes?

a)

a) temporal lope

b)

b) temper lobe

c)

c) trace

d)

d) timpanic

24.

Which type of electrodes are employed to study the electrical activities of individual cells?

a)

a) milli-electrodes

b)

b) micro-electrodes

c)

c) surface-electrodes

d)

d) pre-jelled electrodes

25.

________________ are devices which convert one form of energy into another.

a)

a) transducers

b)

b) electrodes

c)

c) impulses

d)

d) opamp