NEW
Font size
WorksheetsEC8073 ME - Unit I - Quiz
Total questions: 25
Worksheet time: 12mins
The voltage generated during resting potential are
a) Postive
b) negative
c)Botha A and B
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
all-or-nothing law
Abosulte refractory period
Relative refractory period
Sodium pumping is used in which state
Polarization
Depolarization
Repolarization
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) restoration period
b) refactory period
c) regain period
d) regenerative period
Electrodes make a transfer from the __________ in the tissue to the electronic conduction which is necessary to make measurements.
a) electronic conduction
b) ionic conduction
c) electric conduction
d) impulsive conduction
Surface electrodes damage the living tissues.
a) True
b) False
Deep-seated electrodes indicates the electric potential difference arising ________ the living tissues or cells.
a) inside
b) outside
c) around
d) adjacent
Electrode paste ____________
a) increases contact impedance
b) equates contact impedance
c) reduces contact impedance
d) absorbs contact impedance
What is the frequency range of ECG?
a) 70-120 Hz
b) 0.05-120 Hz
c) 5-120 Hz
d) 12-120 Hz
Needle electrode is used to measure ____________
a) EKG
b) EEG
c) EOG
d) EMG
hich of the following is not preferred for electrode making?
a) Ag-AgCl
b) Copper
c) Stainless-steel
d) Gold
Silver -Silver Chloride electrodes are prepared by the process of ____________
a) centrifugation
b) etching
c) manually
d) electrolysis
From instruments point of view, heart is a ______ system.
a) pneumatic
b) electric
c) electronic
d) hydraulic
The basic functional unit of nervous system is ____________
a) nerves
b) axon
c) neuron
d) dendrite
Which of the following is considered to be the primary pacemaker of the heart?
a) sino-atrial node
b) atrio-ventricular node
c) purkinje fibres
d) bundle of his
Recording electrical activities associated with heart is known as ____________
a) EEG
b) EOG
c) EMG
d) ECG
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) ECG
b) EMG
c) EEG
d) EKG
Electrodes to measure EEG are placed on ________
a) forehead
b) scalp
c) cheek
d) ears
According to the international 10/20 system to measure EEG, even number denotes which side of the brain?
a) left
b) top
c) bottom
d) right
Normal EEG frequency range is _______
a) 50-500Hz
b) 0.5-50HZ
c) 0.05-5Hz
d) 1-200Hz
The alpha wave in EEG ranges from ___________
a) 0.5-4Hz
b) 4-8Hz
c) 8-13Hz
d) 13-22Hz
Disturbance in the EEG pattern resulting from the external stimuli is called ________
a) provoked response
b) ckoored response
c) evoked response
d) impulse response
The letter T in the EEG electrode placement system denotes?
a) temporal lope
b) temper lobe
c) trace
d) timpanic
Which type of electrodes are employed to study the electrical activities of individual cells?
a) milli-electrodes
b) micro-electrodes
c) surface-electrodes
d) pre-jelled electrodes
________________ are devices which convert one form of energy into another.
a) transducers
b) electrodes
c) impulses
d) opamp
