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Chapter 7 - Basics of Electricity
Exam Review book and workbook
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Other
Undergraduate 1
05/26/2010

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Cards

Term
The pressure of the flow of electrons through a conductor is measured by ________________.
Definition
Volts
Term
Sinusoidal current is used during _________________ and _______________________.
Definition
Scalp and facial manipulations
Term

Which of the following conditions are contraindications for electrotherapy:

Pacemaker

Epilepsy

open cuts and sores

All the above

Definition

All the above

Pacemaker

Epilepsy

open cuts and sores

Term
Electricity travels ___________________ miles per second.
Definition
186,000
Term
UVA rays can penetrate the skin down to the _______________.
Definition
Dermis
Term
Light therapy is another name for_____________________.
Definition
Phototherapy
Term
Psoriasis and acne can be treated by using __________ _________.
Definition
Ultra violet Light
Term
What skin benefits have LED devices been shown to provide ?
Definition
Helps control acne
Term
Describe Electricity
Definition
Electricity doesn't occupy space, nor does it have physical or chemical properties.
Term
What are sparks and lightening ?
Definition
Effects of electricity
Term
Electric current is the flow of ____________ through an ____________  _________________.
Definition

Electrons

electrical conductor

Term

Primary electrical modalities used in esthetics include:

Galvanic

Faradic

Sinusoidal and Tesla high-frequency

All of the above

Definition

All of the above

Galvanic

Faradic

Sinusoidal and Tesla HF

Term
The 2 categories of electricity include:
Definition
Direct (DC) and Alternating (AC)
Term
Estheticians use these light rays; _______________, ______________ and _______________________.
Definition
infrared rays, ultraviolet rays, and visible light
Term
The electrical path from the generating source through theconductor and back to it's original sources is called:_________________________.
Definition
Complete circuit
Term
What is the name for a constant, even-flowing current that travels in one direction only?
Definition
Direct current
Term
A rapid and interrupted current, flowing first in one direction and then in theopposite direction is called ________________________.
Definition
Alternating
Term
What is the function of a circuit breaker?
Definition
shuts off an electric circuit at the first indication of an overload
Term
An applicator for directing the electric current from the electrotherapy machine to the client's skin is called:
Definition
electrode
Term

Which of the following exclude clients from using certain ingredients or productis, or having certain treatments?

indications

reactions

predilections

contraindications

Definition
Contraindications
Term
In the electromagnetic spectrum, the part that can be seen with the naked eye is called:
Definition
Visible Light
Term

Which skin disease can UVB rays cause?

Premature aging

solar keratoses

skin cancer

All of the above

Definition
Skin Cancers
Term
A volt is a measurement of how much electric energy is being used in __________________________.
Definition
1 second
Term
What must all electrical appliances have to operate safely?
Definition
At least 2 electrical connections
Term
All of the electrical equipment must be ____________________ certified.
Definition
UL
Term
Polarity indicates the _______________ or _______________ pole of an electric current.
Definition
negative, positive
Term
How should you disconnect your equipment?
Definition
Grasp the plug and pull it stright out from the outlet
Term
Besides productin gchemical effects, what do ultraviolet rays do?
Definition
Kill germs
Term

UVA rays can :

Penetrate the Dermis

damage collagen

damage fibrils

all of the above

Definition

All of the above

Penetrate the dermis

damage collagen

damage fibrils

Term
What do broad spectrum sunscreens protect against?
Definition
UVA and UVB rays
Term

What are the advantages of sinusoidal current of faradic current?

Soothes the nerves

penetrates deeper into muscle tissue

supplies greater stimulation

All of the above

Definition

All answers

Soothes the nerves

penetrates deeper into muscle tissue

supplies greater stimulation

Term
What does cataphoresis accomplish?
Definition
Forces acidic substances deeper into tissues
Term

What is an electric current?

Definition

  • Flow of electricity along a conductor.

Term

What is electricity?

Definition

  • A form of energy that when in motion, exhibits magnetic, chemical or thermal effects; a flow of electrons.

Term

What is a conductor?

Definition

  • Any substances, materials, or medium that easily transmits electricity.

Term

What is an insulator or nonconductor?

Definition

  • A substance that doesn't easily transmit electricity.

Term

What is a complete circuit?

Definition

  • The path of an electric current from the generating source through conductors and back to its original source.

Term

What is direct current (DC)?

Definition

  • A constant, even flowing current that travels in one direction only.

Term

What is the function of a converter?

Definition

  • To change direct current (DC) to alternating current (AC).

Term

What is the function of a rectifier?

Definition

  • To change alternating current to direct current.

Term

What is alternating current (AC)?

Definition

  • A rapid and interrupted current, flowing first in one direction and then in the opposite direction, producing mechanical action.

Term

What is an Amp (A)?

Definition

  • Is a unit of measures the strength of an electrical current.

Term

What is a Volt (V)?

Definition

  • A unit that measures the pressure or force that pushes the flow of electrons through a conductor.

Term

What is a milliampere?

Definition

  • 1/1000th of an ampere.

Term

What is Ohm (O)?

Definition

  • A unit that measures the resistance of an electric current.

Term

What is a Watt (W)?

Definition

  • Measurement of how much electric energy is being used in one second.

Term

How many watts are in a kilowatt (K)?

 

  • 1000 watts.
  • 100 watts

     

  • 10 watts
  • 10,000 watts

Definition

  • 1000 watts

Term

What is a Fuse?

Definition

  • A special device that prevents excessive current from passing through a circuit.

Term

What is the function of a circuit breaker?

Definition

  • A switch that automatically interrupts or shuts off an electric circuit at the first indication of an overload.

Term

What is the name for the electronic facial treatments?

Definition

  • Electrotherapy

Term

What is an electrode? Or what serves as a contductor for electricity during electrotherapy?

Definition

 

  • An electrode is an applicator for directing the electric current from the machine to the client's skin.

 

Term

What is the name for positive electrode?

Definition

  • Anode (usually red, marked with "p" of "+")

Term

What is the name for a negative electrode?

Definition

  • Cathode (usually black, marked "N" or "-")

Term

What is the galvanic current?

Definition

  • Uses a constant and direct current, using positive and negative pole to produce the chemical changes when it passes through the tissues and fluids of the body.

Term

What is the active electrode?

Definition

  • Electrode used on the area to be treated.

Term

What is Iontophoresis?

Definition

  • A process of introducing water soluble products into the skin by using electric current such as that from the positive and negative poles of a galvanic machine.

Term

What is the function of Cataphoresis?

Definition

  • A process of forcing acidic substances into deeper tissue using galvanic current from the positive towards the negative pole.

Term

What is the function of Anaphoresis?

Definition

  • A process of forcing alkaline liquids into the tissues from the negative toward the positive pole.

Term

What is Disincrustation?

Definition

  • Galvanic current used to create an alkaline chemical reaction that emulsifies or liquidifies sebum and debris.  The negative electrode is active.  The process is good for oily and acnetic skin.

Term

What is Telsa high frequency current?

Definition

  • Thermal or heat producing current with a high rate of oscillation or vibration also called "violet ray."

Term

What are two methods for applying high-frequency current?

Definition

  1. Direct surface application
  2. Indirect application

Term

What is the light therapy?

Definition

  • The application of light rays to the skin for the treatment of acne, wrinkles, capillaries, pigmentation or hair removal.

Term

What are ultraviolet rays?

Definition

  • Invisible rays that have longer wavelengths, penetrate deeper and produce more heat than visible light does.  They make up to 60% of natural sunlight.

Term

What is the skin type blue light is used for?

Definition

  • Oily skin that is bare.

Term

What skin type is the red light used for?

Definition

  • Dry skin, combined with oils and creams.

Term

What are the four modalities used in electrotherapy? What kind of current in each one?

Definition

  1. Galvanic (DC and constant)
  2. Faradic (alternating and interrupted current)
  3. Sinusoidal (alternating current)
  4. Telsa High Frequency (thermal current)

Term

When conducting desincrustation using the galvanic current, who should hold the positive electrode, the positive polarity?

  1. The client
  2. The esthetician
  3. The esthetician's assistant
  4. Positive polarity is not necessary.

Definition

  • The client.

Term

A substance that does not easily transmit electricity is known as:

  • Electric current
  • Conductor
  • Insulator
  • Complete circuit

Definition

  • Insulator

Term

What is used as a conductor in a machine during electrotherapy?

  • Modalities
  • Electrode
  • Anode
  • Cathode

Definition

  • Electrode

Term

Which of the following is the process of introducing water-soluble products into the skin with the use of electric current?

  • Cataphoresis and Anaphoresis
  • Iontophoresis and Disincrustation
  • None of the above
  • Both choices, first and second

Definition

  • Both first and second.

Term

A milliampere or an ampere is used to measure:

  • Electric current
  • Ocean current
  • Fuse device
  • None of the above

Definition

  • Electric current

Term

A ___________  is a special device that prevents excessive current from passing through a circuit.

  • Volt
  • Plug
  • Fuse
  • Circuit breaker

Definition

  • Fuse

Term

What is used as a conductor of electricity during an electrical treatment?

  • Electrode
  • Conductor
  • Wall plate
  • Rectifier

Definition

  • Electrode

Term

The control that regulates the strength of the current used is called?

  • Converter
  • Ohm
  • Rheostat
  • Volt

Definition

  • Rheostat

Term

During desincrustation who holds the positive electrode?

  • The client
  • The esthetician
  • No one
  • Both the client and the esthetician

Definition

  • The client

Term

What is one of the benefits of high frequency?

  • It improves circulation
  • It has therapeutic properties
  • It has germicidal action
  • It helps increase cell turnover

Definition

  • It has germicidal action.

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