2026 gross anatomy topic 16

post triangle of neck

what is the anterior border of the posterior triangle of the neck

posterior border of SCM

what is the inferior border of the posterior triangle of the neck

middle 1/3 of clavicle

what is the posterior border of the posterior triangle of the neck

anterior border of trapezius mm

what is the roof border of the posterior triangle of the neck

fascia and platysma mm

what is the floor border of the posterior triangle of the neck

prevertebral fascia covering spenius capitis, levator scapula, anterior, middle and posterior scalene mm

what are the 4 mm of the posterior triangle?

scm

anterior scalene

middle scalene

posterior scalene

what artery is medial to anterior scalene?

3 branches: vertebral a, thyocervical trunk, internal thoracic a

what artery is posterior to anterior scalene?

1 branch: costocervical trunk

what artery is lateral to anterior scalene?

1 branch: dorsal scapula a

lesser occipital n c2 innervates what part of the skin?

skin around posterior ear

greater auricular n c2+c3 innervates what part of the skin?

skin inferior to ear

transverse cervical n c2+c3 innervates what part of the skin?

anterior skin of neck

supraclavicular n c3+c4 innervates what part of the skin?

anterior clavicular region

what nerves are in the posterior triangle of the neck

spinal accessory n

roots of brachial plexus

suprascapular n

dorsal scapular n