While performing cardiopulmonary resuscitation (CPR) on an unconscious person, you are careful to position your hands correctly to avoid damage to the
A) ribs.
B) scapula.
C) xiphoid process.
D) sacrum.
E) ribs and xiphoid process.
Answer: E
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Although derived from three germ layers, the __________ lack coeloms
A) Cnidarians B) Platyhelminths C) Rotifers D) Nematodes Fill in the blank with the correct answer.
When absorbing the force of a baseball, which of the following will change the impulse?
A. reduce the force with which the ball is thrown B. wear a catcher's mitt C. "give" with the ball when catching D. both A and B E. all of the above
The vertical osmotic gradient in the medullary interstitial fluid is used by the________ to concentrate the tubular fluid
a. proximal tubules b. distal tubules c. loop of Henle d. collecting ducts e. both (a) and (b)
Down syndrome (trisomy-21 ) results from ________
A) a sex-linked mutation B) an autosomal recessive allele C) a teratogen D) nondisjunction E) a mutagen