The bone tissue that contains a series of sockets and surrounds the roots of the teeth is the ____
A) gingiva
B) periodontal ligament
C) alveolar process or ridge
D) alveolar chamber
C
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You arrive at the aid room and note that portable oxygen tanks are now yellow instead of green as during your previous shift. As a knowledgeable OEC Technician you should:
a. not use the yellow tank and instead retrieve a green cylinder. b. recognize the availability of more effective synthetic oxygen. c. decide that your mountain area has switched to new lightweight oxygen tanks. d. realize that the yellow color indicates new tanks that hold more oxygen.
Small cells within the nervous system that act as phagocytes, watching for and engulfing invaders, are ________.
Fill in the blank(s) with the appropriate word(s).
If an additional pair of hands is used during a procedure, it is termed _________ dentistry
a. sit-down b. four-handed c. six-handed d. none of the above
Which of the following statements regarding twins is correct?
A. The umbilical cords should not be clamped and cut until both babies are born. B. Identical twins have only one umbilical cord coming out of each of the placentas. C. There are two placentas if only one umbilical cord is attached to the first placenta. D. Twins usually weigh more than single babies and are less prone to hypothermia.