The vitamin that functions as part of coenzyme A is
A. riboflavin.
B. pyridoxine.
C. pantothenic acid.
D. niacin.
Answer: C
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A toxin released by the anaerobic bacterium Clostridium botulinum causes the food-borne illness known as botulism, which inhibits the release of ACh at the neuromuscular junction. What effect does this have on a person infected with the bacterium?
A. It disrupts the balance between ACh and acetylcholinesterase, leading to spastic contractions. B. The brain compensates by producing more ACh, limiting the illness to only a few hours. C. The jaws are most affected, and it results in "lockjaw." D. It causes flaccid paralysis, and if it affects the respiratory muscles, can result in death. E. Problems only result when the individual has low immunity.
Most somesthetic signals in the right side of the body reach the cerebral cortex in the contralateral primary somesthetic area
Indicate whether the statement is true or false
Air-filled chambers found in several bones of the skull are called
A) conchae. B) sinuses. C) fontanelles. D) sutures. E) fossae.
The rotator cuff muscles
A. attach at the distal end of the humerus. B. hold the head of the humerus in the glenoid fossa of the scapula. C. fix the scapula in place. D. attach the arm to the thorax. E. attach the clavicle to the humerus.