A patient with generalized weakness informs you that she has a history of iron-deficient anemia. You would understand this to mean that she has:
A) an overabundance of RBCs not capable of carrying oxygen.
B) problems transferring oxygen from the lungs to the RBCs.
C) a decreased amount of hemoglobin available to carry oxygen.
D) malformed RBCs that have a difficult time carrying oxygen.
C
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Which of the following best describes the function of cancellous bone of the medullary canal?
A) It produces erythrocytes. B) It acts as a growth plate in long bones. C) Its dense, compact structure is well adapted to weight bearing. D) It contains yellow bone marrow.
A device that moistens the air in an oxygen delivery system is called a(n):
a. vaporizer. b. regulator. c. humidifier. d. pressurizer.
A patient with syndrome of inappropriate secretion of antidiuretic hormone (SIADH) would present with which of the following laboratory results?
A. Increased serum sodium, osmolality, chloride, and increased urine sodium, B. Decreased serum sodium, osmolality, chloride, and increased urine sodium C. Decreased serum sodium, increased osmolality, chloride, and increased urine sodium D. Increased serum sodium, osmolality, decreased chloride, and increased urine sodium
Which class of antiarrhythmic drugs interferes with potassium channels to prolong the period in which the next heartbeat can occur?
A) Class I B) Class II C) Class III D) Class IV