Question

which of the following properties is most directly associated with changes to a muscle cells membrane potential (the voltage across the plasma membrane)?

elasticity

contractility

excitability

extensibility

check answer

Explanation:

• Elasticity refers to the ability of muscle to recoil to its original resting length after being stretched.
• Contractility is the ability of muscle to shorten forcefully.
• Excitability (also called responsiveness) is the ability of muscle to receive and respond to a stimulus. A stimulus (e.g., a nerve impulse) causes a change in the muscle cell's membrane potential (the voltage across the plasma membrane).
• Extensibility is the ability of muscle to be stretched.

Answer:

excitability