Which of the Following Statements About Resting Potential Is True

question 23

Multiple Choice

Which of the following statements about resting potential is true?

• A)A resting membrane allows much more sodium than potassium to diffuse across it.
• B)The concentration of sodium is much higher inside the cell than outside.
• C)The resting potential exists because of differences in glucose concentration inside and outside the cell.
• D)The sodium-potassium pump contributes to the resting membrane potential.

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Definitions:

Deltoid

A large, triangular muscle covering the shoulder joint that is responsible for lifting the arm and giving the shoulder its range of motion.

Muscle Fibers

The cells of muscles that contract to produce movement, consisting of myofibrils, which are themselves composed of sarcomeres, the basic unit of muscle contraction.

Contusion

A contusion is a medical term for a bruise, which is a mark on the skin caused by blood trapped under the surface after an injury to the small blood vessels within the dermis or subcutaneous tissues.

Sprain

An injury to ligaments caused by being stretched beyond their normal capacity and possibly torn.