The presence of sex chromatin in a smear of epithelial cells indicates that the donor of the cells is a genetic female.
Answer the following statement true (T) or false (F)
True
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The ligamentum ________ is the part of the supraspinous ligament that extends between C7 and the base of the skull.
Fill in the blank(s) with the appropriate word(s).
Which of the following cells has up to 50 nuclei and a ruffled border?
A. Osteoblast B. Osteoclast C. Osteocyte D. Macrophage E. Osteogenic cell
Towards the end of erythropoiesis in the bone marrow, a red blood cell loses its nucleus and becomes a
a) proerythroblast. b) megakaryocyte. c) progenitor cell. d) mature erythrocyte. e) reticulocyte.
The composition of alveolar air differs from atmospheric air. Indicate all of the factors that account for this difference.
A. Presence of water vapor B. Gas exchange adds CO2 C. Difference in overall (total) pressure D. Nitrogen does not enter alveoli E. Gas exchange removes O2