Which of the following uses a motor protein called dynein to move substances along microtubules in the axons?
A) retrograde transport
B) slow axonal transport
C) axoplasmic flow
D) fast anterograde transport
Answer: A) retrograde transport
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Hydrostatic pressure is the force that the ________ of blood exerts on the inner wall of blood vessels trying to "push" fluid through the wall and out into surrounding tissue.
A. formed elements B. liquid portion C. erythrocytes D. leukocytes
The tendency for physiological systems to stabilize internal conditions is called
A) self-regulation. B) homeostasis. C) equilibriosis. D) hemopoiesis. E) amplification.
Which of the following is not a cause of bleeding disorders?
A) thrombocytopenia, a condition of decreased circulating platelets B) excess secretion of platelet-derived growth factor (PDGF) C) a defect in the clotting cascade D) vitamin K deficiency
When both muscles of this pair are contracted simultaneously, they flex the neck forward
A) trapezius B) sternocleidomastoid C) semispinalis D) platysma