Chapter F07 Review Flashcards
What are the properties of direct current?
constant, even flow. Produced by chemical means. Travels in one direction
What are the properties of alternating current?
Rapid and interrupted flow, produced by mechanical means, travels in two directions
Define volt.
pressure or force that pushes electric current forward through a conductor
Define ohm.
resistance of electrical current
What is the electricity in your house measured in?
Kilowatts
Define watt.
electrical energy used per second
What current is used for facial and scalp treatments?
Milliampere
Define amp.
strength of an electrical current
(T or F) Do not allow two electrical cords to touch while in use.
True
(T or F) Study the instructions before using any electrical equipment.
True
(T or F) Do not allow electrical cords to become twisted or bent.
True
(T or F) Inspect all electrical equipment frequently.
True
(T or F) Verify regularly that fire extinguishers are appropriate for electrical fires.
True
(T or F) Keep appliances connected when not in use.
False
(T or F) Do not attempt to clean around electrical outlets while equipment is unplugged.
False (if you clean the outlets everything must be unplugged)
(T or F) Do not allow the client to touch any rubber surfaces while being treated with electrical equipment.
False (rubber is a nonconductor)
(T or F) Do not handle electrical equipment with wet hands.
True
(T or F) When using electrical equipment, protect the client at all times.
True
(T or F) Do not touch two metallic objects at the same time if either is connected to an electric current.
True
(T or F) Avoid letting electrical cords dry out.
False
(T or F) Do not touch any glass while using and electrical appliance.
False
(T or F) If you see sparks when plugging an appliance in, wait 10 seconds before turning the appliance on.
False (you shouldn’t use it until it has been checked by a specialist)
(T or F) Do not overload outlets and power strips.
True
(T or F) Disconnect appliances by pulling on the cord, not the plug.
False (Pull on the plug)
(T or F) Do not stand in the same room while a client is connected to an electrical device.
False
(T or F) Repair all wires, plugs, and equipment yourself.
False
What are the properties of Tesla high-frequency current?
Named after a Croatian electrical engineer, uses one electrode made of glass or metal, thermal or heat-producing current with a high rate of oscillation
What are the properties of microcurrent?
Extremely low level of electricity that mirrows the body’s electrical impulses, negative and positive polarity in one probe, current treats only a specific area, does not travel through the body
What are the properties of Galvanic current?
produces chemical changes through iontophoresis, constant and direct current using a positive and negative pole, named after an Italian doctor
Which is not a modality used in beauty and wellness services?
-integrated current
-galvanic current
-microcurrent
-tesla high-frequency
integrated current
______ is a process used to soften and emulsify oil and blackheads in hair follicles.
deincrustation
__________ is the process that introduces water-soluble products into the skin.
Iontophoresis
Which is the applicator used for directing electric current form an electrotherapy device to a client’s skin?
probe
Microcurrent can restore _______.
elasticity.
Anaphoresis ________.
softens tissues
Which current would most likely be recommended for a client who is looking for acne healing?
a treatment that uses microcurrent
The modalities used in beauty and wellness utilize two electrodes, with the exception of _____, which uses a single electrode.
Tesla high-frequency current
which term is used to refer to conditions that prohibit the use of a certain treatment?
contraindication
Characteristic(s) of UVB rays.
Associated with sunburns
Characteristic(s) of UVA rays
most penetrating UV rays
used in tanning booths
longest UV rays
Characteristc(s) of UVC rays
blocked by the ozone layer
kills bacteria
What is the measurement of the distance between two wavelengths?
waveform
Within the visible spectrum of light, _______ has the shortest wavelength, and __________ has the longest.
violet; red
What light is known as “cold light” or “actinic light”?
ultraviolet
UV lights prompts the skin to produce ________.
vitamin D
Which form of energy in the electromagnetic spectrum is used in nuclear power?
gamma rays
________ is effective at killing bacteria, viruses, mold, and other pathogens.
UVC light
Natural sunlight is made up of _______ types of light.
three
Which light rays are blocked by the ozone layer?
UVC rays
Infrared light is __________ penetrating and has _____________ frequency than ultraviolet.
more; lower
________ light is considered a neutral visible light.
green
