muscles of the mouth (not a lecture)

Question 1

function of obicularis oris?

Answer 1

oal muscle of facial expression, it is the main sphincter muscle of the lips.
it will close the lips to narrow the oral opening.

Question 2

innervation and blood supply of the obicularis oris?

Answer 2

innervation = buccal branches of the facial nerve

blood supply = superior and inferior labial branches of the facial artery

Question 3

what are the 4 muscles of mastication?

Answer 3

• masseter
• temporalis
• medial pterygoid
• lateral pterygoid