A vesicle fuses with the plasma membrane and releases its contents to the extracellular fluid. This statement describes _____.
A)simple diffusion
B)endocytosis
C)exocytosis
D)facilitated diffusion
E)active transport
C)exocytosis
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The three kinds of formed elements in blood are erythrocytes, leukocytes, and
A) lymphocytes. B) platelets. C) phagocytes. D) plasma cells. E) mast cells.
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Answer the following statements true (T) or false (F)
1. The gray rami communicantes consist of myelinated postganglionic fibers. 2. Splanchnic nerves are mixed motor and sensory nerves. 3. The autonomic nervous system may cause activation or inhibition, depending on the division that is active and the target that is affected. 4. The celiac ganglion is primarily associated with the sympathetic division. 5. The sympathetic chain is composed of collateral ganglia.
The police officers also want to know if you can determine the age at death of the skeleton. You determine that all long bone epiphyses have fused to their diaphyses, and all permanent teeth are erupted. The cranial sutures are still open, and the symphysial surface is flattened, but there is no complete rim around the symphysis. Based on these features, a likely age range for the skeleton would be
a. younger than 10 years. b. 10-20 years. c. 20-35 years. d. 35-50 years.