The muscular ring controlling the passage of food from the pharynx int…

Question

The muscular ring controlling the passage of food from the pharynx into the oesophagus is the upper oesophageal:

Accepted Answer

A. Sphincter

1. It opens and closes.
2. It guards the entrance.
3. It is the upper oesophageal sphincter.
_Source: OpenStax Anatomy and Physiology 2e, Chapter 23, The Digestive System._

Answer

Suture ring

Answer

Sinus ring

Answer

Septum ring

The muscular ring controlling the passage of food from the pharynx into the oesophagus is the upper oesophageal:

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