Which of the following image receptor sizes would necessitate that only two bitewing radiographs be exposed?
a. Size #0
b. Size #1
c. Size #2
d. Size #3
d. Size #3 (extra-long) radiographic film packets with preattached tabs are especially made for taking horizontal bitewing radiographs. Phosphor plates used for indirect digital imaging are also available in size #3 . The advantage of these image receptors is that only one image receptor needs to be exposed on each side of the arch to image both premolars and all molars on one image.
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The results of the release of norepinephrine are the:
A) increase in heart rate and vasodilation B) decrease in heart rate and vasoconstriction C) increase in heart rate and vasoconstriction D) decrease in heart rate and vasodilation
Which of the following drugs is a dopamine agonist?
a. carbidopa-ldopa (Sinemet) b. bromocriptine (Parlodel) c. trihexyphenidyl (Artane) d. benztropine (Cogentin)