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Chapter 1: The Basic Science of Therapeutic Modalities

Wavelength is defined as the number of cycles per second.

a. True

b. False

b. False

To achieve deeper tissue penetration, the wavelength must be increased.

a. True

b. False

a. True

Continuous shortwave diathermy produces thermal effects.

a. True

b. False

a. True

Which of the following is NOT an electromagnetic energy modality?

a. Ultraviolet light

b. Ultrasound

c. Low-level laser

d. Shortwave diathermy

b. Ultrasound

Sound or radiation waves that change direction when passing from one type of tissue to another are said to

a. Transmit

b. Absorb

c. Reflect

d. Refract

d. Refract

The ______________________ states that if superficial tissue does not absorb energy, it must be transmitted deeper.

a. Law of Grotthus–Draper

b. Cosine law

c. Inverse square law

d. Arndt–Schultz principle

a. Law of Grotthus–Draper

According to the cosine law, to minimize reflection and maximize absorption, the energy source must be at _______________ a angle to the surface.

a. 45 degree

b. 90 degree

c. 180 degree

d. 0 degree

b. 90 degree

Electrical stimulating currents may produce the following effects:

a. Muscle contraction

b. Net ion movement

c. Decrease in pain

d. All of the above

d. All of the ...

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