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Which of the following best describes the chewing of food?

Absorption

Peristalsis

Regulation

Mechanical digestion

Answer and Explanation

The Correct Answer is D

A. Absorption: Absorption refers to nutrients being taken into the bloodstream, mainly in the intestines.

B. Peristalsis: Peristalsis is the muscular movement of food through the digestive tract, not chewing.

C. Regulation: Regulation refers to control mechanisms in digestion but not to the act of chewing.

D. Mechanical digestion: Chewing breaks food into smaller pieces, which is mechanical digestion and prepares food for chemical digestion.

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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. “You don't need a colonoscopy unless you have bleeding when you move your bowels.” B. “You don't need a colonoscopy unless you have a family history of colon cancer.” C. “You need to get a colonoscopy when you are 60 years old.” D. “You need to get a colonoscopy when you are 45 years old.”

Correct Answer is D

Explanation

A. “You don't need a colonoscopy unless you have bleeding when you move your bowels.”: This delays screening and ignores current guidelines.

B. “You don't need a colonoscopy unless you have a family history of colon cancer.”: Screening is recommended for average-risk individuals regardless of family history.

C. “You need to get a colonoscopy when you are 60 years old.”: This is later than current guidelines recommend.

D. “You need to get a colonoscopy when you are 45 years old.”: As per current USPSTF and American Cancer Society guidelines, colon cancer screening starts at age 45 for average-risk adults.

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Which of the following best describes the chewing of food?

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Naxlex Comprehensive Predictor Exams

Aldosterone:

Correct Answer is D

Explanation

A 44-year-old male client presents to the physician's office for a routine physical. When the patient is talking to the nurse, he asks when he needs to get a colonoscopy. The correct response would be:

Correct Answer is D

Explanation

The esophagus is a muscular tube that:

Which of the following word best describes the function of the urinary bladder?

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

Low levels of oxygen stimulate the kidneys to secrete which substance?

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

Pancreatic lipase:

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