Deeper Structures Of The Canine Head

Question 1

Name the 3 muscles of mastication for mouth closing (paired).

Answer 1

1. Pterygoid
2. Masseter
3. Temporalis

Question 2

Pterygoid, masseter & temporalis muscles are all innervantes by branches of mandibular branch of…

Answer 2

Trigeminal nerve (CN V)

Question 3

Name the muscles of mastication for mouth closing(paired).

Answer 3

Digastricus

Question 4

What are digastricus muscles innervanted by rostrally and causally?

Answer 4

Rostral part - Branch of mandibular branch Trigeminal Nerve (CN V);

Caudal part - Branch of facial nerve (CN VII)

Question 5

Name the origin of the pterygoid.

Answer 5

Lateral pterygoid, palatine & sphenoid bones

Question 6

Name the insertion of pterygoid.

Answer 6

Inner, medial surface of mandible

Question 7

Name the action of pterygoid.

Answer 7

Closes jaws and moves mandible laterally side to side - important in herbivores