Someone has called 911 for assistance, but the telephone connection is so poor that dispatch cannot hear what they are saying. This is a(n) ________ barrier to communication.

____________________________ _ The medical assistant will display professionalism in emergency preparedness through knowledge, training, and proactive measures

Indicate whether the statement is true or false.

The __________ is the part of the Tofflemire retainer that is used to adjust the size of the band

a. outer knob b. spindle c. inner knob d. guide channels