Why Are Epithelial Cells Continually Being Shed from the Villi

question 199

Multiple Choice

Why are epithelial cells continually being shed from the villi?

• A) The intracellular enzymes digest important cellular constituents, causing the cells to disintegrate and slough.
• B) The body needs a continual supply of protein derived from the digestion of these cells.
• C) New cells are continually being produced in the crypts at the base of the villi and migrate upward.
• D) Acid entering the small intestine from the stomach constantly destroys the small intestinal lining, causing the cells to slough.

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Definitions:

Equipment

Tangible assets used in operations, such as machinery or computers, that have a useful life beyond one accounting period.

MACRS

Modified Accelerated Cost Recovery System, a method of depreciation in the United States that allows businesses to recover investments in certain property through tax deductions over a specified life.

Scrap Value

The estimated value that an asset will realize upon its sale at the end of its useful life; often used in depreciation calculations.

Depreciation Expense

The allocation of the cost of a tangible asset over its useful life, reflecting wear and tear, obsolescence, or other declines in value.