Head and Neck 2 Flashcards
contents of the carotid triangle
bifurcation of common carotid artery, internal jugular vein, vagus n, hypoglossal n
cn XII branches into this at about the greater horn of the hyoid bone
nerve to thyrohyoid
innervates most strap muscles
ansa cervicalis
thyrohyoid is supplied by blank
nerve to thyrohyoid (C1)
geniohyoid nerve supply
nerve to geniohyoid (C1)
carotid sheath contents
vagus nerve, internal jugular vein, common carotid
vagus nerve gives off this branch which branches into these two branches
superior laryngeal, internal laryngeal, external laryngeal
larger laryngeal branch
internal laryngeal nerve
medial surface of bifurcation of common carotid that responds to o2 and co2 concentrations
carotid body (chemoreceptor)
a dilation at beginning of internal and end of common carotids, sensitive to pressure
carotid sinus (mechanoreceptor)
carotid body and sinus are supplied by these nerves
CN IX / X
branches of external carotid artery
facial, occipital, lingual, ascending pharyngeal, superior thyroid, superior laryngeal
boundaries of submental triangle
body of hyoid, right and left anterior bellies of digastric muscles, mylohyoid muscle (forms floor)
boundaries of submandibular triangle
inferior border of mandible, anterior belly of digastric, posterior digastric, mylohyoid (floor)
things in submandibular triangle
submandibular gland