When fat is diminished during a change in body weight, the majority of that mass is lost as excreted carbon O True O False
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- Which of the following will not lead to a diuresis? a. excessive sweatingb. central diabetes insipidusc. nephrogenic diabetes insipidusd. excessive water intakee. uncontrolled diabetes mellitusThe color of urine is determined mainly by ________.a. dietb. filtration ratec. byproducts of red blood cell breakdownd. filtration efficiencySomeone has the following data of kidneys: Filtrate= 180 L/day Water=75% reabsorbed Urine =4 L/day NA+ =99.5% reabsorbed Urea=44% reabsorbed Glucose =60% reabsorbed The perone is____________ . diabetic .hypoglycemic .psychotic . ketonemic
- The role of the liver in excretion is the production of urea from:A ammoniaB uric acidC fatty acidsGout—a condition that results in joint swelling and pain—iscaused by the formation of sodium urate (NaC5H3N4O3) crystalswithin tendons, cartilage, and ligaments. Sodium urate precipitatesout of blood plasma when uric acid levels become abnormallyhigh. This can happen as a result of eating too many rich foodsand consuming too much alcohol, which is why gout is sometimesreferred to as the “disease of kings.” If the sodium concentration inblood plasma is 0.140 M and Ksp for sodium urate is 5.76 * 10-8,what minimum concentration of urate results in precipitation?People who begin to lose weight often havea rapid weight loss in the first few days. Common knowledge saysthat this is “just” because of a loss of water from the body. Whymight this be true?
- Which of the following statements, is true about dehydration? Select one: Greater risk for elderly than for adults. Due to failure of the body’s heat-regulating mechanisms. Characterize by colourless urine. May prompt an increased appetite.Which of the following individuals will benefit the MOST from consuming a sports beverage? A. Elderly person who is taking a diuretic B. Athlete who excercises intensely for more than one hour C. Adult who participates in regular physical activity 30 minutes a day. D. Child who will not drink milk.The largest amount of water leaves the body via________.a. the GI tractb. the skin as sweatc. expirationd. urine
- Every day, about 9 l of water comes to the gastrointestinal tract. What proportion of the water has been reabsorbed when the intestinal contents reach the rectum? a) 50% b) 99% c) 1% d) 85% e) 10%Renin is released in response to ________.a. increased blood pressureb. decreased blood pressurec. ACEd. diureticsOne advantage of the excretion of urea instead of uric acid isthat ureaa. requires less energy than uric acid to produce.b. can be concentrated to a greater extent.c. is not a toxic substance.d. requires no water to excrete.e. is a larger molecule.
