As Hearing Takes Place, an Electrical Potential Is Set Up

question 42

Multiple Choice

As hearing takes place, an electrical potential is set up, sending nerve impulses to the brain. What actually causes the electrical potential to be formed?

• A) Bending of the hair cells in the organ of Corti by the basilar membrane.
• B) Contact between the hammer and the anvil.
• C) Friction between the basilar and tectorial membranes.
• D) Passage of the cochlear fluid through the oval window.

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Definitions:

Labour Efficiency Variance

The difference between the actual hours worked and the standard hours expected to produce a certain level of output, valued at the standard labour rate.

Credit Balance

An account balance that shows money owed to the account holder, often indicating a creditor position in financial records.

Materials Price Variance

The difference between the actual cost of direct materials and the expected (standard) cost multiplied by the actual quantity purchased or used.

Labour Rate Variance

The difference between the actual cost of labor and the expected (or standard) cost.