The sarcomere, or contractile unit of striated muscle, extends from one __________ to the next
A) Z-disk
B) M-line
C) A-band
D) I-band
Fill in the blank with the correct answer.
Answer: A
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Which of the following is not a feature of the sympathetic division of the ANS?
A) It has long preganglionic fibers. B) Its ganglia are adjacent to the spinal column. C) It originates in the thoracolumbar region of the spinal cord. D) It has an extensive neural divergence and a relative widespread effect. E) It has long postganglionic fibers.
An anticoagulant is a substance that:
A) dissolves a blood clot B) prevents blood from clotting C) causes the formation of a thrombus D) causes the formation of an embolus
Mr. Miller has been hospitalized for the flu. The flu virus increases membrane permeability to K+. You would expect his cells to ________.
A. depolarize B. isopolarize C. repolarize D. hypopolarize E. hyperpolarize
Which of the following is NOT an action of antibodies with the antigen?
A. Make a cluster of antigen-antibody complexes B. Neutralize bacterial toxins by coating them C. Make the antigen more susceptible to phagocytosis D. All of the choices are actions of antibodies.