In a Sail Switch, When a Large Amount of Airflow

question 4

Multiple Choice

In a sail switch, when a large amount of airflow passes across the sail, enough force is produced to cause the ____ to operate the contacts of the switch.

• A) metal arm
• B) bellows
• C) spring
• D) lever

---

Definitions:

Serous Membrane

A thin membrane lining certain internal cavities of the body, producing a lubricating fluid to reduce friction between organs.

Pericardium

A double-layered membrane surrounding the heart, protecting it and anchoring it to the surrounding walls.

Abdominopelvic Cavity

A body cavity comprising both the abdominal and the pelvic cavities, housing major organs of digestion, reproduction, and excretion.

Anterior Body Cavity

The front part of the body cavity that houses organs in the thoracic and abdominopelvic regions.