TX Bar TX Barber Scientific Concepts 3

Question 1

In the context of electricity used in barbering, what does the term 'ampere' measure?

Accepted Answer

The rate of flow of electrical current

Answer

Ampere (amp) measures the rate of flow of electrical current — specifically, the number of electrons moving past a point per second.

Question 2

Infrared light used in heat lamps during barbering treatments penetrates tissue primarily to produce:

Accepted Answer

Deep heat that increases blood circulation

Answer

Infrared rays penetrate deeply into skin tissue, producing heat that dilates blood vessels and increases circulation, aiding in relaxation and product absorption.

Question 3

The high-frequency current used in barbering produces which of the following therapeutic effects?

Accepted Answer

Germicidal and stimulating effects on the scalp

Answer

High-frequency current generates heat within tissues and produces ozone at the skin surface, which has germicidal properties and stimulates the scalp.

Question 4

Which principle explains why two like electrical poles repel each other and why galvanic current can drive solutions into the skin?

Accepted Answer

Iontophoresis via electrophoresis principles

Answer

Iontophoresis uses the principle that like charges repel — a negative electrode drives negative ions (anions) into the skin while a positive electrode drives positive ions (cations).

Question 5

The chemical compound melanin, which gives hair its color, is produced by cells called:

Accepted Answer

Melanocytes

Answer

Melanocytes are specialized cells in the hair bulb and epidermis that produce melanin pigment, which is then transferred to cortical cells of the hair shaft.

(TX Bar) Texas Bar Exam Practice Test

(TX Bar) Texas Bar Exam Practice Test

TX Bar TX Barber Scientific Concepts 3