A pacemaker that appears unexpectedly at an abnormal site in the heart muscle is called a(n) ________
A) Heart muscle cannot serve as a pacemaker. B) supplemental rhythmic center
C) ectopic pacemaker D) extrasystole
Answer: C
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Protection against atherosclerosis is believed to be associated with an elevated ________.
A. VLDL-cholesterol B. total cholesterol C. HDL-cholesterol D. LDL-cholesterol
The human reproductive system
A) is as essential to the survival of an individual as all other anatomic systems. B) remains functional throughout the life of an individual. C) stores but does not produce gametes. D) ensures the continued existence of the human species. E) None of the answers are correct.
The only bone in the body that does not articulate with another bone is the ________.
Fill in the blank(s) with the appropriate word(s).
Which of the following hormones causes contractions of the uterus during childbirth?
What will be an ideal response?