During an explosion, a 42-year-old construction worker sustained a large laceration to the lateral aspect of his neck when he was struck by a piece of flying debris. The patient is conscious, but complains of difficulty hearing. In addition to protecting his spine, you should be MOST concerned with:
A) administering high-flow oxygen via nonrebreathing mask as soon as possible.
B) covering the laceration with an occlusive dressing and controlling the bleeding.
C) carefully examining his ear to determine if his tympanic membrane is ruptured.
D) applying a bulky dressing to the laceration and securing it firmly with a bandage.
Ans: B) covering the laceration with an occlusive dressing and controlling the bleeding.
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a. 8% to 12% for men and 12% to 15% for women b. 12% to 18% for men and 25% to 30% for women c. 12% to 18% for men and 18% to 24% for women d. 18% to 24% for both men and women
What occurs during hyperpolarization of a neuron membrane?
A) Both sodium and potassium ions are leaving the cell B) Potassium ions are leaving the cell C) Sodium ions are entering the cells D) Potassium ions are entering the cell E) Sodium ions are leaving the cell
Which processes are considered major respiratory functions that the respiratory and cardiovascular systems accomplish? Choose all that apply.
A. Gas exchange between the air in the lungs and the blood B. Transport of gases between the lungs and the tissues C. Pulmonary ventilation D. Gas exchange between blood and interstitial fluid
An increase in capillary blood pressure would tend to:
a. increase interstitial fluid volume b. increase plasma volume c. decrease interstitial fluid volume d. both B and C above