Root of Neck Flashcards
Pretracheal layer divisions
•Muscular layer
–Infrahyoid MM
•Visceral layer
–Thyroid, trachea, esophagus
Carotid sheath contents
–Common carotid A
•Internal carotid A
–Internal jugular V
–Vagus N
–Lymphatics
–N to carotid body/sinus
Danger space location
b/w alar fascia & prevertebral layer, closed laterally
Scelen muscle attachments
•Attach to TP of cervical verts
–Lateral flexion of neck
•Anterior & Middle scalenes
–Inf. attachment on 1st rib
•Post scalene on 2nd rib
–Deep/Ant to levator scapulae M
Roots of brachial plexus location
Emerge bw anterior and middle scalenes
1st divison of subclavian a
–Internal thoracic A
–Vertebral A (to brain)
–Thyrocervical trunk
2nd division of subclavian a
–Costocervical trunk
–Dorsal scapular A (variable)
3rd division of subclavian a
–Dorsal scapular A (variable)
developmental connection b/w tongue and thyroid (pyramidal lobe is remnant)
Thyroglossal duct
Vagus nerve branches in neck
Main ganglia Cervical Sympathetic Trunk
Superior cervical ganglion
Level of C2 (=angle of mand.)
Middle cervical ganglion
Level of C6 (=cricoid cart.)
Inf. cervical/Stellate ganglion
Level of vertebral/subclavian A
Collect lymph from entire head and neck
