100,170 views
2 votes
2 votes
The ____________ acts as the first sphincter of the digestive tract by voluntarily controlling entrance into the ____________ .

User Moshe Sommers
by
3.5k points

1 Answer

5 votes
5 votes

Answer:

The orbicularis oris acts as the first sphincter of the digestive tract by voluntarily controlling entrance into the buccal cavity.

Step-by-step explanation:

User Just Lucky Really
by
3.8k points