The skeletal muscle shortens during concentric, isotonic contraction
Indicate whether the statement is true or false
T
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The smallest neuroglia of the CNS that act as phagocytes are the
A) astrocytes. B) ependymocytes. C) microglia. D) oligodendrocytes. E) tanycytes.
You are diagnosed with the autoimmune disease Systemic Lupus Erythematosus, causing your immune system to produce antibodies against specific tissues in your body. This best represents a failure of ________.
A. innate immunity B. clonal-anergy, because lymphocytes that recognize self antigens are not being activated C. central tolerance, because lymphocytes that recognize self antigens are not being activated D. clonal-deletion, because lymphocytes that recognize self antigens are not being destroyed
Antibodies are produced by
A. the red bone marrow. B. cytotoxic T cells stimulated by helper T cells. C. B cells that differentiate to form plasma cells. D. natural killer cells as they lyse cancer cells. E. helper T cells stimulated by various cytokines.
The appendix, tonsils, and Peyer's patches are examples of ________.
Fill in the blank(s) with the appropriate word(s).