Anterior Triangle: Muscular Triangle and Endocrine Glands Flashcards
what are the borders of the anterior triangle
inferior border of mandible, anterior border of SCM and midline of neck
what is the roof of the anterior triangle
deep investing fascia around muscles
what is the floor of the anterior triangle
pretracheal fascia and carotid sheath
what are the subdivisions of the anterior triangle of the neck
submandibular, submental, carotid and muscular
what does the submandibular division contain
submandibular gland, lymph nodes, mylohyoid nerve and parts of facial artery and vein
what does the submental division contain
submental lymph nodes and some small veins
what does the carotid triangle contain
thyroid gland, larynx, pharynx, carotid sheath, branches of cervical plexus, superior root of ansa cervicalis, CNXI and XII and deep cervical lymph nodes
what does the muscular division contain
sternohyoid and sternothyroid muscles, thyroid and parathyroid glands
what do the suprahyoid muscles connect to
skull or mandible
what are the suprahyoid muscles
mylohyoid, digastric, stylohyoid, geniohyoid
what do the infrahyoid muscles connect to
inferior structures (sternum, scapula, thyroid cartilage)
what are the infrahyoid muscles
sternohyoid, omohyoid, thyrohyoid, sternothyroid
what do the suprahyoid muscles do
elevate the hyoid and larynx and constitute substance of floor of mouth
what is the origin of the mylohyoid
mylohyoid line on mandible
what is the insertion of mylohyoid
body of hyoid and fibres of opposite mylohyoid
what are the 2 parts of the digastric
anterior and posterior bellies
what is the origin of the anterior digastric
digastric fossa on lower medial aspect of mandible
what is the insertion of the anterior digastric
attachment of intermediate tendon at hyoid
what is the action of anterior digastric
raises hyoid and lowers mandible
what is the origin of posterior digastric
mastoid notch on medial side of mastoid process
what is the insertion of posterior digastric
attachment of intermediate tendon at hyoid