Chapter 4 Test ppt part 5 Flashcards
Origin: inner surface of the mandible
Insertion: hyoid bone
Function: draws hyoid up and forward; elevate hyoid
Anterior Digastricus
Origin: mastoid process of temporal bone
Insertion: hyoid bone
Function: draws hyoid up and back; elevate hyoid
Posterior Digastricus
Origin: Manubrium & clavicle
Insertion: Inferior margin of hyoid
Action: Depresses hyoid
Sternohyoid Muscle
Origin: superior: intermediate tendon
inferior: upper border of scapula
Insertion: superior: lower border, hyoid
inferior: intermediate tendon
Action: depresses hyoid
Omohyoid Muscle
Makes up floor of oral cavity
Mylohyoid raphe is a tendonous strip at midline
Connects the two muscles and supports tongue
Innervated by V nerve
Mylohyoid Muscle
Origin: inner surface of mandible
Insertion: tongue and corpus hyoid
Action: elevates hyoid
Genioglossus Muscle
Origin: mental spines, inner surface of mandible
Insertion: corpus of hyoid bone
Action: Elevates hyoid bone
Geniohyoid (Superior to the mylohyoid)
Origin: Mylohyoid line; inner surface of mandible
Insertion: Corpus of hyoid
Action: Elevates hyoid or depresses mandible
Mylohyoid Muscle
Origin: hyoid bone (greater cornu and corpus)
Insertion: sides of tongue
Action: elevates hyoid; depresses tongue
Hyoglossus Muscle
Origin: styloid process of temporal bone
Insertion: corpus of hyoid bone
Action: moves hyoid up and back
Stylohyoid
Origin: manubrium sterni and first costal cartilage
Insertion: Oblique line, thyroid cartilage
Action: depresses thyroid cartilage
Sternothyroid Muscle
Helps make fine adjustments to vocal folds
Origin: oblique line, thyroid cartilage
Insertion: greater cornu, hyoid
Action: depresses hyoid or elevates larynx
Thyrohyoid Muscle
Major ligament of the suspensory system is the____
STYLOHYOID LIGAMENT..
