What Structure Prevents Reflux of Stomach Contents

question 69

Multiple Choice

What structure prevents reflux of stomach contents?

• A)Pepsinogen
• B)Gastric mucosa
• C)Upper esophageal sphincter
• D)Lower esophageal sphincter
• E)Duodenum

---

Definitions:

Resources

Assets, materials, and inputs needed to produce goods and services.

Overallocated

A situation where resources are disproportionately distributed or excessively committed to a particular project or area, potentially leading to inefficiencies.

Production

Production is the process of creating goods or services through the combination of labor, materials, and technology to meet consumer demand.

Marginal Social Cost

The cost to society of producing one additional unit of a good, including both the cost to the producer and any costs to others from that production.