Posterior Triangle Kusemiju

Question 1

BOUNDARIES OF POSTERIOR TRIANGLE
•Apex –
•Base –
•Roof –
•Floor –
•Ant border –
•Post border –

Answer 1

BOUNDARIES OF POSTERIOR TRIANGLE
•Apex – blunt and upwards at the junction of trapezius and s/c/mastoid
•Base – middle 3rd of clavicle
•Roof – investing layer of deep fascia
•Floor – prevertebra fascial and underlying musls (scaleni msls, splenius capitis, levator )
•Ant border – post border of s/c/mastoid
•Post border – ant. Margin of trapezius mscl

Question 2

SUBDIVISIONS OF POSTERIOR TRIANGLE
•POSTERIOR – ——- and ——— by the ———muscle

Answer 2

SUBDIVISIONS OF POSTERIOR TRIANGLE
•POSTERIOR – Subclavian and Occipital by the inferior belly of omohyoid

Question 3

SUBDIVISIONS OF POSTERIOR TRIANGLE
•POSTERIOR – Subclavian and Occipital by the inferior belly of omohyoid muscle
Subclavian boundaries –
Occipital boundaries –

Answer 3

SUBDIVISIONS OF POSTERIOR TRIANGLE
•POSTERIOR – Subclavian and Occipital by the inferior belly of omohyoid muscle
Subclavian – inferior belly of omohyoid,
clavicle, stenocleidomastoid.(smaller)
Occipital – trapezius, inferior belly of
omohyoid and stenocleidomastoid muscles

Question 4

CONTENTS OF THE POSTERIOR TRIANGLE
•Subclavian -
•Occipital –

Answer 4

CONTENTS OF THE POSTERIOR TRIANGLE
•Subclavian -3rd part of the subclavian artery, subclavian vein, supraclavicular part of brachial plexus, suprascapular artery, vein, nerve and lymphnodes, nerve to subclavius
•Occipital – accessory nerve, occipital artery, part of brachial plexus,cervical plexus branches, transverse cervical vessels and lymphnodes

Question 5

Posterior Triangle of Neck : Contents
•Muscles:
•Vessels:
•Nerves:
LYMPHATIC VESSELS:

Answer 5

Posterior Triangle of Neck : Contents
•Muscles: splenius capitis, levator scapulae, scalenus medius and posterior, omohyoid
•Vessels: Ext. jug. vein; subclavian vein and artery, transverse cervical artery, suprascapular artery; occipital artery
•Nerves: Accessory (NXI); cervical plexus (lesser occipital, greater auricular, transverse cervical, supraclavicular, phrenic; dorsal scapular and nerve to levator scapulae; trunks and roots of brachial plexus
LYMPHATIC VESSELS:
•Deep cervical lymph nodes
•Jugular trunk
•Thoracic duct