Each of the following patients has HIV infection and has been experiencing either fever or diarrhea for the past month. Which one meets the CDC definition for AIDS-related wasting syndrome?
a. Patient 64" tall, current weight 1051 , weight 1101 1 month ago
b. Patient 67" tall, current weight 1081 , weight 1171 1 month ago
c. Patient 67" tall, current weight 1401 , weight 1561 1 month ago
d. Patient 64" tall, current weight 1161 , weight 1221 1 month ago
c
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The Dietary Guidelines recommend that we consume less than _____ of cholesterol daily
a. 100 mg b. 100 grams c. 300 mg d. 30 grams
All of the following conditions raise water requirements except:
a. heart disease. b. severe vomiting. c. fever. d. blood loss.
Which of the following statements about sweat is not true?
a) It helps maintain a stable body temperature. b) It is less effective than air at conducting heat. c) It is produced in sweat glands. d) It is directed to the skin's surface via ducts directly from the sweat glands.
Discuss in detail the digestion, absorption, and transport of dietary lipids, including the sterols
What will be an ideal response? Fat digestion starts off slowly in the mouth, with some hard fats beginning to melt when they reach body temperature. A salivary gland at the base of the tongue releases an enzyme (lingual lipase) that plays an active role in fat digestion in infants, but a relatively minor role in adults. In infants, this enzyme efficiently digests the short- and medium-chain fatty acids found in milk. In a quiet stomach, fat would float as a layer above the watery components of swallowed food. But whenever food is present, the stomach becomes active. The strong muscle contractions of the stomach propel its contents toward the pyloric sphincter. Some chyme passes through the pyloric sphincter periodically, but the remaining partially digested food is propelled back into the body of the stomach. This churning grinds the solid pieces to finer particles, mixes the chyme, and disperses the fat into small droplets. These actions help to expose the fat for attack by the gastric lipase enzyme—an enzyme that performs best in the acidic environment of the stomach. Still, little fat digestion takes place in the stomach; most of the action occurs in the small intestine.