Which of the following best describes how food moves through the digestive system, from mouth to anus?

Defecation

Emulsification

Peristalsis

Mastication

Answer and Explanation

The Correct Answer is C

A. Defecation: This is the elimination of feces from the rectum, not the process of moving food through the GI tract.

B. Emulsification: This refers to breaking down fat into smaller droplets (done by bile), not the movement of food.

C. Peristalsis: Peristalsis is the rhythmic muscular contraction that propels food through the digestive tract.

D. Mastication: This is chewing, a mechanical process that occurs in the mouth before food enters the esophagus.

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Correct Answer is D

Explanation

A. Causes Na⁺ excretion: Aldosterone promotes sodium reabsorption, not excretion, to increase blood volume and pressure.

B. Depletes blood volume: Aldosterone increases blood volume by retaining sodium and water.

C. Causes K⁺ reabsorption: Aldosterone promotes potassium excretion, not reabsorption.

D. Causes Na⁺ and water reabsorption: Aldosterone acts on the renal tubules to reabsorb sodium, which draws water back into circulation, increasing blood volume.

A. Epiglottis B. Tonsils C. Uvula D. Appendix

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.

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Which of the following best describes how food moves through the digestive system, from mouth to anus?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

Aldosterone:

Correct Answer is D

Explanation

Which flap made of cartilage prevents food and water from entering the respiratory passages?

Correct Answer is A

Explanation

A nurse is reviewing the laboratory findings for a client who had a urinalysis. Which finding should the nurse report to the provider?

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Which of the following is FALSE concerning normal urine?

The sigmoid is part of the:

Impaired hepatic function:

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Which of the following best describes how food moves through the digestive system, from mouth to anus?

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