Which gas law is applied in a fusible-plug pressure-relief valve?
a. Boyle's c. Dalton's
b. Charles' d. Gay-Lussac's
ANS: D
The pressure-release valve allows some of the gas on top of the liquid to escape if the contents are warmed too much. This release of gas allows the gas within the container to expand, thus lowering the temperature. This maintains the gas under pressure between its boiling point and its critical temperature so that the majority of the reservoir's contents will be maintained in the liquid state.
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The EMT shows that he is correctly using the flow-restricted, oxygen-powered ventilation device when he:
A) stops ventilating as soon as the patient's chest begins to rise. B) administers each ventilation over a 2- to 3-second period. C) ventilates the patient at a rate of 20 breaths per minute. D) increases pressure if the air enters the stomach instead of the lungs.
The medical coding process requires the __________ of patient record documentation to identify diagnoses, procedures, and services for the purpose of assigning ICD-10-CM, ICD-10-PCS, HCPCS level II, and/or CPT codes
a. correction b. entry c. omission d. review
Place the appointments for a partial denture in order
1 . Final impression 2 . Adjustment 3 . Preliminary impression 4 . Delivery 5 . Try-in and adjustment a. 3, 1, 5, 4, 2 b. 1, 3, 5, 4, 2 c. 3, 5, 1, 4, 2 d. 3, 1, 2, 4, 5
Which hormone is released from the kidneys in response to hypoxia?
a. aldosterone c. RHF b. erythropoietin d. HVR