15 Questions
Which tissue will have the highest concentration of the electric field?
Muscle
What determines the ease in which an electric field can be set up in the tissue?
Electrical properties of the tissue
Where will heat be concentrated based on the given information?
Tissues of high fluid content
What is the primary goal of diathermy?
To produce deep heat within the tissues
What is the frequency utilized by SWD machines used in physiotherapy?
27.12 MHz
How does passing a current of sufficient intensity at a high frequency affect the tissues?
It increases internal kinetic energy and causes heating
Which type of living tissues influences tissue conductivity when SWD is applied?
All of the above
What is the wavelength of the radio waves used in SWD machines?
11 meters
Diathermy is derived from a Greek word meaning 'through cooling'
False
What does SWD stand for in physiotherapy?
Shortwave Diathermy
SWD machines used in physiotherapy utilize a frequency of 27.12 MHz
True
Pulsed shortwave diathermy does not stimulate motor or sensory nerves
True
Passing a current of sufficient intensity at a high frequency in SWD causes a decrease in tissue temperature
False
Non-polar molecules, such as fat cells, do not influence tissue conductivity when SWD is applied
False
The primary goal of diathermy is to cause muscle contractions
False
Test your knowledge on the electrical properties of tissue and how electric fields are established within them. Learn about the factors affecting the concentration of electric fields and heat in different types of tissues.
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