____ is stool that is dark due to the blood having been digested by the stomach's acidic environment.
A. Melana
B. Angioma
C. Hematochezia
D. Granuloma
Answer: A
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A synapse between a neuron and a muscle cell is called a:
a. Neuromuscular junction b. Myofiber connection c. Synaptic junction d. Synaptic cleft
Why are managed care organizations (MCOs) evaluating and grading network physicians on the services they provide?
What will be an ideal response?
Which statement about the direct antiglobulin test (DAT) in the postpartum period is true?
a. If the DAT on a cord blood specimen is positive, an eluate should always be prepared and tested against the biological father's red blood cells. b. If the mother has a clinically significant antibody, a DAT should be performed on a blood specimen from the newborn. c. Laboratory standards mandate that a DAT be performed on cord blood collected from every live birth. d. The strength of the DAT in cases of ABO compatibility is indicative of the severity of the hemolytic process.
The yellow-topped vacuum blood collection tube has which of the following additives?
a. sodium citrate b. SPS c. EDTA d. no additive