The training regimen of a competitive weight lifter is designed partly to ________.
A. convert white muscle tissue to red muscle
B. lower the threshold for muscle excitation
C. increase the average number of myofibrils per muscle fiber
D. convert certain parallel muscles into stronger pennate muscles
E. increase the size of his motor units
Answer: C
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Red blood cells are efficient oxygen transport cells. Of the following characteristics, which is the major contributor to the significant oxygen-carrying capacity of a red blood cell?
A. Red blood cells lack mitochondria. B. Red blood cells don't divide. C. Red blood cells are biconcave discs. D. Red blood cells contain myoglobin.
Small, oddly shaped bones that fill gaps between bones of the skull are called ________ bones
A) irregular B) sesamoid C) sutural D) sagittal E) tendon
The gastric phase of gastric secretion is triggered by
A) the release of cholecystokinin and secretin by the small intestine. B) the sight, thought, or smell of food. C) the entry of chyme into the small intestine. D) the entry of food into the stomach. E) the entry of chyme into the large intestine.
The spinous process has a bifid tip in most ________ vertebrae.
A. thoracic B. sacral C. coccygeal D. lumbar E. cervical