Ch. 5 Estim, Pt. 1

What is the purpose of electrical stimulation?

• To create a biological effect

• To reduce swelling

• To measure electrical activity in a muscle

• To modulate pain perception

Answer explanation

Adjusting the different parameters allows different effects or reactions of biological tissue.

What relationship do these terms have: ampere, current, hertz, pulse?

• They are parameters

• They are neurotransmitters

• They are enchantments

• They are measurable

Answer explanation

...a numerical or other measurable factor forming one of a set that defines a system or sets the conditions of its operation. Commonly available on electrical stimulation units.

A ________ current (traditionally) has an uninterrupted unidirectional flow.

Answer explanation

However, on modern units, the polarity (+/-) can be reversed and you can adjust the on/off for the delivery of the current/wave.

What type of circuit is established when e-stim travels via skin, fat, nerve, blood, muscle, & bone?

• Short

• Parallel

• Both series & parallel

• Series

Answer explanation

Series circuit is via skin, fat. It becomes a parallel when traveling through the parallel structures of nerves, blood, muscle, and bone.

What is the best biological electrical conductor in the body?

Answer explanation

A conductor conducts electricity since it offers little or no resistance to the flow of electrons, thus leading to a flow of electrical current. Blood is composed largely of water and ions, therefore consequently best electrical conductor of all tissues.