Unit I Mandible and associated structures Flashcards
What forms the temporomandibular joint?
the condylar process of the mandible and temporal bone
Where is the area of attachment on the mandible for muscle of mastication?
the coronoid process
TMJ syndrome, a major cause of migraines, is due to the misalignment of
the condylar process
The superior mental spine is an origin for what muscle?
the genioglossus
The inferior mental spine is an origin for what muscle?
geniohyoid
The digastric fossa is an origin for what muscle?
the anterior belly of the digastric
The mylohyoid line is an origin for what muscle?
mylohyoid
What is the location of the sublingual gland?
the sublingual fossa
The submandibular gland is located where?
submandibular fossa
Origin of the posterior belly of the digastric
mastoid process
Origin of the anterior belly of the digastric
digastric fossa
Insertion of digastric
both bellies insert onto an intermediate tendon on the hyoid
Innervation of anterior belly of digastric
nerve to mylohyoid
innervation of posterior belly of digastric
cervical branch of facial
Function of digastric
elevates hyoid
depresses mandible when hyoid is fixed
Origin of mylohyoid
mylohyoid line
Insertion of mylohyoid
body of hyoid and median raphe
Innervation of mylohyoid
nerve to mylohyoid
Function of mylohyoid
elevates hyoid and floor of mouth
Origin of geniohyoid
inferior mental spine
Insertion of geniohyoid
body of hyoid
Innervation of geniohyoid
C1 fibers through hypoglossal
Function of geniohyoid
elevates hyoid and tongue
Origin of genioglossus
superior mental spine
Insertion of genioglossus
tip and entire undersurface of tongue
Innervation of genioglossus
hypoglossal nerve
Function of genioglossus
draws tongue forward
protrudes tip of tongue
Origin of hyoglossus
body and greater horn of hyoid
Insertion of hyglossus
sides of tongue
Innervation of hyoglossus
hypoglossal nerve
Function of hyoglossus
draws tongue downward
A small portion of the hyoglossus originating from the lesser horn of the hyoid is called
the chondroglossus
Origin of stylogossus
styloid proccess
Insertion of styloglossus
sides of the tongue
Innervation of styloglossus
hypoglossal nerve
Function of styloglossus
draw tongue upward and back
Origin of stylohyoid
styloid process
Insertion of stylohyoid
body of hyoid
Innervation of stylohyoid
facial nerve
Function of stylohyoid
elevates hyoid and tongue
The superficial part of the submandibular gland lies
in the submandibular triangle and fossa
The deep part of the submandibular gland lies
superior to the mylohyoid
Innervation of the submandibular gland
parasympathetic fibers from facial nerve via the submandibular ganglion
Where does the submandibular gland empty?
into the oral cavity on the sublingual caruncle
What is the smallest of the major salivary glands?
What is the smallest of the major salivary glands?
Where does the sublingual gland lie at?
superior to the mylohyoid, in the sublingual fossa
Where does the sublingual gland empty?
on the floor of the mouth along the sublingual fold
Innervation of the sublingual gland
parasympathetic fibers from the facial nerve via submandibular ganglion
List the nerves associated with the mandible
lingual, gossopharyngeal, and hypoglossal
List the blood vessels associated with the mandible
lingual artery and vein, and facial artery and vein
List the lymph nodes associated with the mandible
submandibular and submental