Question

________ act as valves along the gastrointestinal tract to control the flow of food material.

Question 14 options:

Sphincters


Salivary glands


Circular muscles


Longitudinal muscles

Answer 1

A. Sphincters

Step-by-step explanation:

Answer 2

Sphincter

Step-by-step explanation:

A ring-like muscle that forms valves in the digestive system. There are 5 located in the digestive system.