When a Muscle Fiber Receives an Action Potential from a Neuron

question 70

Multiple Choice

When a muscle fiber receives an action potential from a neuron, how many sarcomeres in the fiber contract?

• A) All of the sarcomeres in the fiber contract.
• B) The number that contracts is inversely proportional to the strength of the action potential.
• C) The number that contracts is directly proportional to the strength of the action potential.
• D) Approximately one half of the sarcomeres in the fiber contract.

---

Definitions:

Spontaneous Remission

The unexpected improvement or cure of a disease or condition without medical intervention.

Spontaneous Recovery

A phenomenon where previously extinguished responses reappear after a period of time without exposure to the conditioned stimulus.

Placebo Remission

The phenomenon where a patient's symptoms are alleviated without any therapeutic intervention, attributed to the individual's belief in the treatment's efficacy.

Behaviour Therapy

A type of psychotherapy that focuses on changing unwanted behaviors through various techniques, such as conditioning.