Muscles that elevate the upper lip

Question 1

Where does the Levator labii superioris alaeque nasi arise from?

Answer 1

Frontal process of the maxilla

Question 2

Where are the three insertion points of the Levator labii superioris alaeque nasi?

Answer 2

1. Lateral nasal alar cartlidge
2. Dermis ofupper lip
3. Orbicularis oris muscle

Question 3

What branch of the facial nerve innervates the Levator labii superioris alaeque nasi?

Answer 3

Buccal branch

Question 4

What happens when the Levator labii superioris alaeque nasi contracts?

Answer 4

Dilates the nosril and elevates the upper lip

Question 5

Where does the Levator labii superioris arise from?

(3 places)

Answer 5

1. Inferior orbital rim on the maxilla
2. Deep to the orbicularis oculi
3. Superior to the infraorbital forman

Question 6

What are the two places that the fibers of the Levator labii superioris insert?

Answer 6

1. Dermis of the upper lip
2. Orbicularis oris

Question 7

What supplies the Levator labii superioris with blood?

Answer 7

The infraorbital branch of the maxillary artery