The ventricles of the vertebrate brain contain
A) Neurons.
B) Glia.
C) Cerebrospinal fluid.
D) Dura mater.
Answer: C
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The ability of certain cells to respond to chemicals in their environment is called
A) chemotaxis. B) complement. C) necrosis. D) phagocytosis. E) regeneration.
Compare and contrast isotonic versus isometric contractions
What will be an ideal response?
Jared received a donor kidney. After the first week, it became apparent that Jared's body was rejecting the organ. This is due to
A. Jared's lack of helper T cells that prevent the lymphatic tissue of the donated kidney damaging the donated kidney. B. an autoimmune disease that is destroying healthy tissue. C. a lack of a match between Jared's immune cells and the MHC class I molecules on the cells of the donor kidney.
Excess K+ in cardiac tissue causes
A. an increase in stroke volume. B. a rapid repolarization of cardiac cells. C. an increased heart rate. D. a decrease in the frequency of action potentials in the conduction system. E. an increase in the frequency of action potentials.