Which Skeletal Muscle Serves as an Accessory Respiratory Muscle

question 54

Multiple Choice

Which skeletal muscle serves as an accessory respiratory muscle?

• A) rectus abdominus.
• B) diaphragm.
• C) external intercostal.
• D) internal intercostal.
• E) none of the above

---

Definitions:

Neutral Stimulus

A stimulus that initially produces no specific response other than focusing attention, until it is paired with an unconditioned stimulus.

Unconditioned Stimulus

In classical conditioning, a stimulus that unconditionally—naturally and automatically—triggers a response.

Conditioned Stimulus

A previously neutral stimulus that, after becoming associated with the unconditioned stimulus, eventually comes to trigger a conditioned response.

Operant Conditioning

A learning process through which the strength of a behavior is modified by reinforcement or punishment.