Chapter 9 Definitions

Question 1

electromagnetic field

Answer 1

teh lines of force created by positive and negative poles

Question 2

entrauterine device (IUD)

Answer 2

a plastic or metal coil inserted within the uterus to prevent prgnancy

Question 3

inverse square law

Answer 3

a low statign that the intensity of the energy striking the tissues is proportional to the square of the distance between the source of the energy and the tissues: energy received = energy at the source / distance from the shource squared

Question 4

conductor (electrical)

Answer 4

a material having the ability to transmit electricity. Conductors have many free electrons and provide relatively little resistance to electrical flow. Within the body, tissues having a high water content are considered conductors

Question 5

dipole

Answer 5

a pair of equal and opposite charges separated by a distance

Question 6

physis

Answer 6

the growth plate of bone