Multiple choice

Which of these is a thick ring - like smooth muscle that separates the stomach from the duodenum of the small intestine?

  1. Pyloric sphincter

  2. Microvilli

  3. Oesophagus

  4. Epiglottis

  5. Caecum

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The pyloric sphincter or valve is a strong ring of smooth muscle at the end of the pyloric canal, which lets food pass from the stomach to the duodenum. It is located at the base of the stomach, and is the contracting ring of muscle that guards the entrance of the small intestine.