An action potential is triggered if
A) EPSPs overpower IPSPs. B) the membrane hyperpolarizes.
C) IPSPs overpower EPSPs. D) chloride channels open.
A
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Platelets
a. are small cell fragments derived from large megakaryocytes in the bone marrow b. lack nuclei c. contain high concentrations of actin and myosin, which enable them to contract d. have all of the above characteristics e. have only characteristics a and b
_______ reflects the amount of red blood cells mass as a proportion of whole blood.
a. leukocytosis b. aplastic c. hemolytic d. hematocrit
A cell that breaks down and recycles proteins would have large numbers of
A. peroxisomes. B. secretory vesicles. C. proteosomes. D. lysosomes. E. rough ER.
________ secretions affect the cell that secretes them.
Fill in the blank(s) with the appropriate word(s).