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Chapter 1: The Basic Science of Therapeutic Modalities

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Wavelength is defined as the number of cycles per second.

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a. True

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b. False

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b. False

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

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a. True

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b. False

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a. True

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Continuous shortwave diathermy produces thermal effects.

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a. True

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b. False

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a. True

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Which of the following is NOT an electromagnetic energy modality?

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a. Ultraviolet light

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b. Ultrasound

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c. Low-level laser

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d. Shortwave diathermy

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b. Ultrasound

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

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a. Transmit

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b. Absorb

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c. Reflect

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d. Refract

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d. Refract

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

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a. Law of Grotthus–Draper

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b. Cosine law

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c. Inverse square law

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d. Arndt–Schultz principle

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a. Law of Grotthus–Draper

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

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a. 45 degree

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b. 90 degree

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c. 180 degree

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d. 0 degree

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b. 90 degree

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Electrical stimulating currents may produce the following effects:

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a. Muscle contraction

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b. Net ion movement

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c. Decrease in pain

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d. All of the above

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d. All of the ...

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