Submandibular triangle Flashcards
Origin and insertion of the diagstric, anterior belly
origin: digastric fossa of mandible
insertion: hyoid bone via digastric tendon
Origin and insertion of the digastric, posterior belly
origin: medial aspect of mastoid process
insertion: hyoid bone via the digastric tendon
innervation of the digastric, anterior belly
mylohyoid nerve (CN V3)
innervation of digastric, posterior belly
CN VII
Action of digastric, anterior belly
lowers mandible or raises hyoid
action of digastric, posterior belly
elevates and retracts hyoid
origin and insertion of mylohyoid
origin: mylohyoid line of mandible
insertion: hyoid bone and mylohyoid raphe
origin and insertion of geniohyoid
origin: inferior mental spine of mandible
insertion: hyoid bone
origin and insertion of stylohyoid
origin: syloid process
insertion: body of hyoid bone
innervation of mylohyoid
mylohyoid nerve (CN V3)
innervation of geniohyoid
C1 branch traveling with CN XII
innervation of stylohyoid
CN VII
action of mylohyoid
supports and elevates floor of mouth
raises hyoid
action of geniohyoid
draws mandible and hyoid toward each other
action of stylohyoid
eleavates and retracts hyoid
Origin and insertion of hyoglossus
origin: greater horn of the hyoid bone
insertion: lateral tongue
Origin and insertion of genioglossus
origin: superior mental spine
insertion: hyoid bone, tongue
Origin and insertion of styloglossus
origin: styloid process
insertion: lateral tongue
Origin and insertion of palatoglossus
origin: posterior margin of he hard palate, palatine aponeurosis
insertion: lateral tongue
innervation of hyoglossus
CN XII
innervation of genioglossus
CN XII
innvervation of styloglossus
CN XII
innervation of palatoglossus
CN X, pharyngeal branches
action of hyoglossus
depresses and retracts the tongue
action of genioglossus
protrudes, depresses and retracts the tongue
action of the styloglossus
retracts and elevates the tongue
action of the palatoglossus
depresses the palate
elevates the back of the tongue
