Chapter 13 Hair school

Which of the following is not a term that refers to the object that is used to direct electrical current to a client's skin?

Converter Electrodes, probes, and applicators all refer to an object that directs electrical current to a client's skin; a converter does not.

Which of the following is a conductor?

Copper Most metals are good conductors, and copper is an especially good conductor. This is why it is used extensively in electrical wires and electrical motors.

Which of the following items does not use direct current (DC)?

Curling iron Appliances that plug into a wall socket, like curling irons, do not use DC; they use alternating current or AC.

Galvanic Current

DC that makes chemical changes in the body without breaking the skin

Which of the following is not a modality?

Direct current Microcurrent, Tesla high frequency, and galvanic are all modalities; DC is not.

A corded hair dryer runs on direct current.

False A corded hair dryer runs on alternating current

Microcurrent travels throughout the entire body

False Microcurrent serves only the specific area being treated.

The electricity in a house is measured in milliamperes per hour.

False The electricity in a house is measured in kilowatts per hour.

UVA light is most associated with sunburns.

False UVB, or the burning light, is most associated with sunburns.

Which of the following is not among the guidelines you should adhere to when using electrical appliances in the salon?

Never use two-pronged plugs. Yes, you can use two-pronged plugs. Although, three-pronged plugs are safer, two-pronged plugs are perfectly acceptable as long as you do not force the plug into the socket in the wrong direction.

Microcurrent

Produces a low-level current that does not travel through the body

Contraindications

Signals to not do a procedure on a person for health or other reasons

Which of these is not a benefit of Tesla high frequency current?

Stimulate muscle contractions The Tesla high frequency current does not stimulate muscle contractions.

Cathode

The negative pole of an electric current; usually colored black

Anode

The positive pole of an electric current; usually colored red

Tesla

This high-frequency heat-producing current uses a single electrode

Electrodes

This probe device directs an electric current to the clients skin

Modality

Three main types: each produces a different effect on the skin

All materials can be classified as conductors or nonconductors.

True All materials either conduct electricity and are considered conductors, or do not conduct electricity and are considered nonconductors.

A wire that is not large enough to carry the electrical current passing through it will overheat.

True If too much electrical current tries to pass through a wire, it will overheat, and a safety device such as a fuse or circuit breaker will turn off the circuit to prevent a fire.

Intense pulse light can only be used under the supervision of a physician.

True Intense pulse light treatments are provided only under the supervision of a qualified physician.

The light found on each end of the visible spectrum of light is invisible to the naked eye

True Invisible light is the light at either end of the visible spectrum of light that is invisible to the naked eye.

When using galvanic current, the active electrode is used on the area to be treated.

True The active electrode is used on the area to be treated, and the inactive electrode is the opposite pole from the active electrode.

Appliances should be disconnected from the electrical outlet when not in use.

True You should disconnect all appliances from the electrical outlet when they are not in use, and pull on the plug (not the cord) to disconnect them.

Which of the following is not an insulator?

Water Water is not an insulator, the ions in ordinary water make it a good conductor.

You walk into the salon to start your day and see a mess of electrical appliances plugged into two outlets using multi-plug adapters. Making it worse, the cosmetologist for that station is currently not even there. What do you do?

You find the cosmetologist in charge of the station and offer to help him or her find some other options for powering his or her appliances.

A safety device that switches off a circuit at the first indication of overload is called:

a circuit breaker A circuit breaker is the most common device designed to cut the electrical circuit in case of overload.

The different types of electrical current that are used in facial and scalp treatments are called:

modalities Modalities are the different types of electrical current used in facial and scalp treatments. Each modality produces a different effect on the skin.

Contraindications refers to:

reasons or conditions for not doing a treatment The term contraindications refers to conditions that require avoiding certain treatments.