Airway Resistance

question 74

Multiple Choice

Airway resistance

• A) is normally the primary factor determining the amount of flow into/out of the lungs.
• B) is increased when the diameter of the airways becomes reduced.
• C) when elevated requires an increased pressure gradient between the lungs and atmosphere through vigorous respiratory efforts to move even normal volumes of air into and out of the lungs.
• D) both (b) and (c) above.
• E) all of these answers.

---

Definitions:

Ventral Root

The part of a spinal nerve that emerges from the anterior (ventral) part of the spinal cord, carrying motor information from the central nervous system to the muscles.

Median Nerve

A major nerve of the upper limb, running down the arm and forearm, involved in sensation and motor control of the hand.

Biceps Brachii

A muscle of the upper arm responsible for the flexion of the elbow and rotation of the forearm.

Intrinsic Hand Muscles

The muscles located within the hand that are responsible for fine motor movements and control of the fingers.