association cortex region of the cortex that is not programmed for sensory or motor activities were higher mental processing involved in thought, learning, and memory occurs, this region is involved in the integration of sensory information or motor commands
If kilovoltage is decreased with no other variations in exposure factors, the resultant film willa. appear lighterb. appear darkerc. remain the samed. either a or b
The overall blackness of a film is termeda. contrastb. densityc. overexposured. polychromatic
Identify which of the following is true concerning labial mountinga. the patients left is on your leftb. the patients left is on your rightc. the teeth are mounted in reverse anatomic orderd. the radiographs are viewed as if the operator were inside the patients mouth looking out
Ionization occursa. when atoms lose electrons; they become deficient in negative charges and therefore behave as positively charged atoms.b. when atoms gain electrons; they become positively chargedc. when an atom loses its nucleusd. only whn K-orbit electron is ejected and replaced by an L-orbit
Greater beam limitation is achived when the PID is ________ and the diameter of the opening is __________.a. shorter; smallerb. longer; biggerc. shorter; biggerd. longer; smaller
which of the following is the location in which thermonic emission occurs?a. positive cathodeb. postive anodec. negative cathoded. negative anode
the difference in degrees of blackness between adjacent areas on a dental radiograph is termeda. densityb. contrastc. subject thicknessd. diagnostic quality
A variation in the true size and shape of the object being radiographed is termeda. magnificationb. distortionc. sharpnessd. resolution
True/False;True/FalseRadiation is the emission and propatation of energy through space or a substance in the form of waves or particles. Radioactivity can be defined as the process by which certain unstable atoms or elements undergo spontaneous disintegration, or decay, in an effort to attain a more balanced nuclear state
Which of the following statements is true of general radation?a. it is also known as braking (bremsstrahlung) radiationb. it is also known as characteristic radiationc. it is the source of the majority of x-rays that are producedd. both a and c
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