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Anatomy
Technology
Theory
100
Two muscle groups of the hand are pictured below.

This muscle group covers the crude movement of the hand and grip.
What is extrinsic muscles
100
These are the two other types of technology that are similar to the resistive strain gauge dynamometer.
What are the hydraulic hand dynamometer and pneumatic hand dynamometer?
100
This type of pinch only deals with the pad of the index finger and the thumb.
What is precision pinch? (Alternate correct answers include pad pinch)
200

This fiber group is the smallest of the three groups. They appear as red and fire less rapidly, but are capable of a more sustained contraction.
What is slow fiber?
200
The value that represents the strain gauge’s sensitivity to changes in resistance.
What is a gauge factor?
200
The output of a resistive strain-gauge circuit.
What is voltage?
300

to

is this kind of movement.
What is abduction?
300

This would occur if you hold the hand dynamometer incorrectly.
What is incorrect biosignal collection?
300
If this is injuried, the digit is unable to straighten and must remain in flexion.
What is extensor tendon?
400

These antagonist pairs of muscles are located on opposite sides of the forearm and are responsible for changing the angle between articulating bones
What extensor and flexor muscles?
400
The ratio of total deformation to the initial dimension of the material body in which the forces are being applied.
What is mechanical strain?
400
This is required to reduce the amount of noise coupled to the strain gauge circuit.
What is a lowpass filter?
500

This group of muscles is composed of the three thumb muscles. It also has it's own "eminence"
What is thenar muscles?
500
An instrument for measuring voltage by balancing it again the potential difference passing a known current through a known variable resistor.
What is a potentiometer?
500
Because the output voltage of the strain gauge is so small, this type of circuitry is used to amplify the output voltage.
What is a Wheatstone Bridge/Circuit?