The glial cell that helps to circulate cerebrospinal fluid is the
A. ependymal cell.
B. astrocyte.
C. microglial cell.
D. oligodendrocyte.
E. neurolemmocyte.
Answer: A
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Select the correct statement about antigens
A) "Self-antigens" is another name for incomplete antigens. B) The largest type of antigen is called a hapten. C) One antigen may have many different antigenic determinants and may therefore cause the formation of more than one antibody. D) Only small antigens exhibit reactivity.
As cells are pushed from the deeper portion of the epidermis toward the surface,
A) they become dermal cells. B) they die. C) they divide continually. D) their supply of nutrients improves.
Homeostasis is the body's maintenance of an unstable internal environment
Indicate whether the statement is true or false
Which of the following statements does not accurately describe factors that determine the amount of force generated during a muscle contraction?
A. The number of cross-bridges that can form is higher in a short muscle fiber compared to longer fibers. B. Increasing stimulation of a muscle fiber results in increased formation of cross-bridges. C. Muscle fibers that have larger diameters have more myofibrils and therefore can form more cross-bridges. D. Muscle fibers that are stretched to the optimal length will provide higher numbers of cross-bridges.