Which of the following best describes the relationship between ammonia levels and hepatic encephalopathy?
a. Although blood ammonia levels do not correlate well with the degree of neurological impairment in hepatic encephalopathy, ammonia-reducing medications can successfully reverse the neurological symptoms.
b. Blood ammonia levels are positively correlated with the level of impairment, but their reduction rarely reverses the neurological symptoms.
c. Blood ammonia levels increase only in the late stages of hepatic encephalopathy and can be treated with ammonia-reducing medications that will slow progression of the neurological impairments.
d. Blood ammonia levels are inconsistently related to the extent of neurological impairments and their treatment has no appreciable effect on functioning.
a
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How does the shape of proteins in muscle fibers affect their function?
A. They are globular and can change shape to increase muscle mass. B. They are long, allowing muscle fibers to contract and relax. C. They are short, helping muscle fibers build up in response to weight-bearing exercise. D. They are wide, giving muscle fibers great tensile strength.
Kcalories from which food would be considered part of one's discretionary kcalorie allowance?
a. jam b. watermelon c. raw carrots d. brussels sprouts e. green beans
In order to optimize iron absorption, vegetarians should eat iron-rich plant foods with ________.
A. vitamin B12 B. vitamin C C. selenium D. vitamin A
The layer of cells lining the inside of blood vessels is called the:
a. endometrium. b. mitochondria. c. endothelium. d. cytoplasm.