Normal lymph nodes contain all of the following cell types except:
a. Myelocytes
b. Plasma cells
c. Lymphocytes
d. Macrophages
ANS: A
Normal lymph nodes do not contain myelocytes. They do contain lymphocytes (both T and B), plasma cells (fully differentiated B cells), and macrophages.
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All of the following are considered diagnostic criteria for aplastic anemia except:
a. Granulocyte count 0.3 ? 109/L b. Platelet count 5 ? 109/L c. Anemia with absolute reticulocyte count of 22 ? 109/L d. BM cellularity of 32%
A respiratory therapist is preparing a neonatal patient for a radial artery puncture. Before the puncture, she performs an Allen's Test on the patient. This is done to ensure which of the following?
A) adequate circulation in the radial artery B) appropriate oxygen levels in the blood supply C) no hematoma formation D) collateral circulation
A hydrocarbon with one or more double covalent bonds is a(n):
A. alkane. B. alkene. C. alkyne. D. saturated compound.
Fire doors are operated:
A. manually, mechanically, electrically B. electrically, hydraulically, battery supplied C. by portable or fixed power units D. by manual or electrical power