In connective tissue, the extracellular matrix consists of
A. cells and ground substance.
B. cells and protein fibers.
C. protein fibers and ground substance.
D. ground substance only.
E. ground substance and intracellular fluid.
Answer: C
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Which of the light micrographs in the following figure shows the type of epithelial tissue whose structure allows it to be stretched or distended?
a) A b) D c) E d) G e) H
The fold of dura mater in the transverse fissure is the ________.
Fill in the blank(s) with the appropriate word(s).
Blood is comprised of cellular elements and an extracellular matrix comprised primarily of water. What is the name of the blood's extracellular matrix?
a. hematocrit b. fibrinogen c. buffy coat d. plasma e. none of these
Action potentials are normally initiated at the axon hillock because
a. there is a particularly high density of voltage-gated sodium channels there. b. threshold potential is lower there than at other sites along the plasma membrane. c. activation of sodium channels at the axon hillock results in a particularly strong inward current and consequent depolarization. d. all of these. e. none of these.