In the Lungs, an Example of the Body's Reserve Capacity

question 54

Multiple Choice

In the lungs, an example of the body's reserve capacity is that

• A) some areas of the lung can be closed off during rest and opened again when needed during exercise.
• B) capillary beds in the lungs are reversibly collapsible, allowing blood to be shunted to additional areas during exercise.
• C) pulmonary blood flow is completely under the control of the autonomic nervous system, dilating arteries and arterioles to adjust blood flow.
• D) All of the statements are True.
• E) None of the statements are True.

---

Definitions:

Debit Balance

Occurs when the total of debits in an account exceeds the total of credits, which can be typical for accounts like expenses, assets, and losses.

Allowance for Doubtful Accounts

A contra-asset account used to estimate the portion of a company's accounts receivable that may not be collectible.

Allowance for Doubtful Accounts

A contra-asset account that represents the estimated portion of accounts receivable that may not be collectible.

Uncollectible Receivables

Amounts due from customers that are considered unlikely to be collected and are written off as a loss.