The primary kind of motility in the stomach during digestion of a meal is:
A. peristalsis.
B. segmentation.
C. relaxation of the pyloric sphincter.
D. mass movement.
E. regurgitation.
A
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Because platelets are cell fragments, they lack __________
Fill in the blank(s) with correct word
Which of the following is not associated with the composition of the cytoskeleton?
A. Microfilaments B. Microtubules C. Intermediate filaments D. Terminal web E. Cilia
Macrophage colony-stimulating factor stimulates the production of
A. erythrocytes from myeloid stem cells. B. monocytes from monoblasts. C. erythrocyte progenitor cells. D. megakaryocytes and platelets. E. granulocytes from their progenitors.
Aspirin inhibits blood clotting by directly preventing ________.
A. clot retraction B. thrombin formation C. fibrin formation D. platelet plug formation