Epithelial Tissues Have Polarity,with an Apical Side That Faces the Environment

question 33

Multiple Choice

Epithelial tissues have polarity,with an apical side that faces the environment and a basolateral side that faces the interior of the animal.Because of the harsh environmental exposure on the apical side,epithelial cells have a short life span of 2-6 days.Which of the following is the most likely reason that the tissue as a whole does not wear away,despite the short life spans of the cells?

• A)The epithelial tissue is unusually thick.
• B)The degraded tissue is recycled and restored to its original site.
• C)The tissue has cells that actively undergo mitosis and cytokinesis to replace the lost cells.
• D)New cells are transported in the blood to the site where old cells have worn away.

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Definitions:

Compensating Balance

A minimum bank balance that a borrower must maintain as a condition for obtaining a loan, often used to compensate banks for the loan services.

Effective Interest Rate

The real interest rate on a loan or financial product, accounting for the effect of compounding over a given period.

Minimum

The lowest possible amount, quantity, or degree achievable or permissible.

Gross Working Capital

The total of all current assets in a company, which includes items such as cash, inventory, and accounts receivable.