Prior to chemical tests for glycosuria, clinicians checked for sweetness of the urine as a sign of
pyelitis
diabetes mellitus
renal calculus
acute glomerulonephritis
The Correct Answer is B
A. Pyelitis is an infection of the renal pelvis and does not cause sweet-smelling urine.
B. Diabetes mellitus often causes glycosuria (glucose in urine), which can make urine taste sweet.
C. Renal calculus (kidney stones) does not affect urine sweetness.
D. Acute glomerulonephritis affects kidney function and urine appearance but does not specifically cause sweet-smelling urine.
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Correct Answer is C
Explanation
A. Esophageal glands secrete mucus to lubricate the esophagus, but they do not cause acid reflux.
B. Pharyngeal constrictors are muscles that help in the swallowing process, not in preventing acid reflux.
C. The lower esophageal sphincter (LES) is a ring of muscle that controls the passage of food from the esophagus to the stomach. If the LES is weakened or relaxes inappropriately, stomach acid can flow back into the esophagus, causing acid reflux or "heartburn."
D. The upper esophageal sphincter controls the passage of food from the pharynx into the esophagus, but it is not involved in preventing acid reflux.
Correct Answer is A
Explanation
A. Renal corpuscle: Blood plasma is filtered in the renal corpuscle, which includes the glomerulus and Bowman's capsule.
B. Renal capsule: The renal capsule is the outer protective layer of the kidney and does not filter blood plasma.
C. Renal tubule: The renal tubule is involved in reabsorption and secretion, not in the initial filtration of blood plasma.
D. Renal column: The renal column is a structural part of the kidney, not involved in filtering blood plasma.