The first heart sounds are best heard ________
A) in the 5th intercostal spaces, at various distances from the sternal margins
B) in the second intercostal spaces at the sternal margins
C) directly over the body of the sternum, just inferior to the sternal angle
D) just beneath the xiphoid process of the sternum
Answer: A
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The type of fibers specialized to continue contracting for extended periods of time, as would be required in running a marathon, for example, are _____ fibers
A. fast-twitch B. slow-twitch
Which of the following is synthesized in the rough endoplasmic reticulum?
A. Cortisol B. Testosterone C. Calcitriol D. Glucagon E. Aldosterone
During this phase of mitosis, the chromosomes split and the spindles pull them apart
A) Anaphase B) Telophase C) Metaphase D) Interphase
The extraembryonic membrane that forms a fluid-filled sac is the
A) yolk sac. B) amnion. C) allantois. D) chorion. E) decidua.