During leukopoiesis, neutrophils are derived from __________.
a) myeloblasts
b) lymphoblast
c) monoblasts
d) proerythroblasts
Answer: a) myeloblasts
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Which vessel of the heart receives blood during right ventricular systole?
A) venae cavae B) pulmonary trunk C) aorta D) pulmonary veins
Gas exchange occurs in all of the following EXCEPT:
A) terminal bronchioles. B) alveolar ducts. C) respiratory bronchioles. D) alveolar sacs.
The popliteal region is the
A. calf. B. armpit. C. hollow behind the knee. D. neck. E. thigh.
Which of the following is not a step in endochondral bone formation?
A. Hyaline cartilage develops into the shape of the future bone. B. Hyaline cartilage changes to adipose tissue. C. Osteoblasts deposit osseous tissue in place of disintegrating cartilage. D. Periosteum forms from connective tissue outside the developing bone.