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Which of the following is not a "plumbing" structure of the urinary system?

Urethra

Ureters

Glomeruli

Urinary bladder

Answer and Explanation

The Correct Answer is C

A. Urethra: The urethra is a tube that carries urine from the bladder to outside the body—part of the “plumbing.”

B. Ureters: These are tubes that transport urine from the kidneys to the bladder.

C. Glomeruli: Glomeruli are part of the kidney’s filtration system, not the excretory “plumbing” system.

D. Urinary bladder: The bladder stores urine and is considered part of the urinary “plumbing.”

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Correct Answer is A

Explanation

A. Epiglottis: The epiglottis is a flap of cartilage that covers the laryngeal opening during swallowing to prevent food or liquid from entering the airway.

B. Tonsils: Tonsils are lymphatic tissues in the pharynx that help trap pathogens, not prevent aspiration.

C. Uvula: The uvula helps close off the nasopharynx, not the trachea, during swallowing.

D. Appendix: The appendix is a blind-ended tube attached to the cecum; it plays no role in swallowing or airway protection.

A. Reabsorption B. Filtration C. Storage D. Increase RBC production E. Secretion

Correct Answer is ["A","B","E"]

Explanation

A. Reabsorption: The nephron reabsorbs water, glucose, and electrolytes from the filtrate back into the blood.

B. Filtration: The glomerulus filters blood, initiating urine formation by removing waste, water, and solutes.

C. Storage: Urine storage occurs in the bladder, not the nephron.

D. Increase RBC production: While the kidneys release erythropoietin, which stimulates RBC production, this is not a nephron-specific function.

E. Secretion: The nephron actively secretes waste products like hydrogen ions and drugs into the tubule for excretion.

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Which of the following is not a "plumbing" structure of the urinary system?

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Naxlex Comprehensive Predictor Exams

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