The gas above liquid oxygen is maintained:
a. between its freezing point and its critical temperature.
b. between its boiling point and its critical temperature.
c. at its critical pressure.
d. at its boiling point.
ANS: B
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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Your patient is a 20-year-old college student who has fallen from a third-level balcony onto a wooden deck below. The patient responds to verbal stimuli, is pale in color with moist skin, and has a very obvious deformity with protruding bone ends of his right forearm. Which of the following is the BEST sequence of intervention for this patient?
A) Open the airway; assess breathing; check the carotid pulse; splint the forearm injury; immobilize the patient to a long backboard; apply high-concentration oxygen; and transport. B) Provide manual in-line stabilization of the cervical spine along with assessment of breathing, pulse, and the presence of significant hemorrhage; apply high-concentration oxygen; perform a rapid trauma exam; immobilize to a long backboard; and check with medical control about the need to splint the forearm injury prior to transport. C) Provide manual in-line stabilization of the cervical spine along with assessment of breathing, pulse, and the presence of significant hemorrhage; apply high-concentration oxygen; perform a rapid trauma exam; immobilize to a long backboard; transport; and splint the extremity en route if time and resources allow. D) Provide immediate manual in-line stabilization of the cervical spine; apply high-concentration oxygen by nonrebreather mask; perform a focused history and assessment; apply the cervical collar; apply a padded board splint, sling, and swathe to the forearm injury; and transport.
Most autoimmune diseases ________.
A. have no cure B. can be cured if detected and treated in early stages C. reverse spontaneously, even without treatment D. affect the skeletal system
A family of peptides called natriuretic peptides serves to regulate:
A. Potassium levels. B. Sodium and water metabolism. C. Glucose metabolism. D. Chloride excretion.
A consultation includes the examination of a patient by a specialist, who also provides an opinion or advice
Indicate whether the statement is true or false