Muscles of the lips and cheeks

Question 1

Position of m. orbicularis oris

Answer 1

Circularly disposed around the oral opening and forms the bulk of both lips. The muscle in the upper lip also attaches to the lateral nostril.

Question 2

Origin of m. buccinator

Answer 2

Ventro-lateral edge of the maxilla

Question 3

Insertion of m. buccinator

Answer 3

Dorso-lateral edge of the mandible. Forms the bulk of the cheek.