mandible and muscles of mastication Flashcards
what part of the mandible articulates with the temporal bone
condylar process
what muscle attaches to the superior mental spine
genioglossus
what muscle attaches to the inferior mental spine
geniohyoid
what passes through the lingual foramina
sublingual arteries
what type of joint is the temporomandibular joint
synovial
what is the function of the articular disc in the temporomandibular joint
permits a hinging movement and a foward and backward gliding movement
what is the function of the articular capsule in the temporomandibular
ensures that the joint is sealed, keeping the lubricating synovial fluid within the joint and provides stability to the joint by limiting joint movement
what muscles is the temporomandibular disk attached to
lateral pterygoid muscles
what is the TMJ innervated by
mandibular nerve (third root of trigeminal nerve)
what arteries supply the TMJ
the superficial temporal artery and maxillary artery
what artrey supplies the lateral pterygoid muscle
pterygoid branch of maxillary and ascending palatine branch of the facial artery
where does the lateral pterygoid muscle arise from
greater wing of the sphenoid and and lateral aspect of the lateralpterygoid plate
where does the lateral pterygoid muscle insert
hollow in jaw infront of condylar process and onto the capsule of the TMJ and infront of edge of articular disk
what is the function of the lateral pterygoid muscle
opens jaw
what innervates the lateral pterygoid muscle
mandibular branch of the trigeminal nerve
where does the medial pterygoid muscle arise from
Arises from both the pterygoid plates; the medial aspect of the lateral one, and the lateral aspect of the medial one as well as the tuber of the maxilla
what is the medial pterygoid muscle innervated by
the medial pterygoid branch of the mandibular division of the trigeminal nerve
what arteries supply the medial pterygoid muscle
the pterygoid branches of maxillary artery and muscular branches of the facial artery
where does the temporalis arise from
temporal fossa and fascia
what is the temporalis innervated by
the deep temporal nerves of the mandibular nerves
where does the temporalis attach
. They insert on the outer aspect, and the inner aspect of the coronoid process, and also on the anterior part of the ramus of the mandible
what artery supplies the temporalis
the anterior deep temporal artery (ADTA), the posterior deep temporal artery (PDTA), and the middle temporal artery (MTA).
where does the masseter arise from
zygomtatic arch
where does the masseter attach
angle and ramus of mandible
what is the masseter innervated by
mandibular branch of crainal nerve V
what artery supplies the masseter
the masseteric artery, a branch of the internal maxillary artery
where does the sphenomandibular ligament run
from spine of sphenoid to the lingula
where does the stylomandibular ligament run
styloid process to angle of mandible
what is the function of the lateral temporomandibular ligament
Prevents posterior displacement of the resting condyle and initiates translation of condyle upon mouth opening.
what is the lateral temporomandibular ligament attached to
zygomatic process of temporal bone and the lateral surface and posterior border of the neck of the condyle
