731 UE Anatomical Spaces

base of axilla

skin of armpit

apex of axilla

1st rib, clavicle, and superior border of scapula

anterior wall of axilla

pectoralis major and minor

posterior wall of axilla

subscapularis, teres major, latissimus dorsi

axilla medial wall

1-4 ribs, serratus anterior, intercostal muscles

axilla lateral wall

intertubercular groove of humerus

contents of the axilla

• axillary artery

• axillary vein

• axillary lymph nodes

• brachial plexus

quadrangular space superior border

teres minor

quadrangular space inferior border

teres major

quadrangular space medial border

long head of the triceps brachii

quadrangular space lateral border

humeral surgical neck

contents of the quadrangular space

axillary nerve and posterior circumflex artery

triangular space inferior border

teres major

triangular space lateral border

long head of the triceps brachii

triangular space superior border

lower border of the teres minor

contents of the triangular space

circumflex scapular artery

triangular interval lateral border

shaft of humerus/lateral head of triceps brachii

triangular interval medial border

lateral border of the long head of the triceps brachii

triangular interval superior border

teres major

contents of the triangular interval

radial nerve and profunda brachii artery

cubital fossa superior border

an imaginary line between the medial and lateral epicondyles of the humerus

cubital fossa medial border

the lateral boundary of the pronator teres

cubital fossa lateral border

the medial border of the brachioradialis

contents of the cubital fossa

median nerve, brachial artery and vein, radial nerve, biceps tendon, median cubital vein, bicipital aponeurosis

posterior triangle of the neck posterior border

anterior border of trapezius muscle

posterior triangle of the neck anterior border

posterior border of SCM

posterior triangle of the neck inferior border

clavicle

posterior triangle of the neck roof

deep cervical fascia

posterior triangle of the neck floor

muscles (splenius capitis, levator scapulae, scalene muscles)

contents of the posterior triangle of the neck

subclavian artery, transverse cervical artery, suprascapular artery, accessory nerve XI, ventral rami of brachial plexus, cutaneous branch of cervical plexus, suprascapular nerve, phrenic nerve

anterior triangle of the neck lateral border

anterir border of SCM

anterior triangle of the neck anterior border

anterior midline of neck

anterior triangle of the neck superior border

mandible

contents of the anterior triangle of the neck

common carotid artery, jugular veins, vagus nerve X, hypoglossal nerve XII

suboccipital triangle superomedial border

rectus capitis posterior major

suboccipital triangle superlateral border

obliquus capitis superior

suboccipital triangle inferolateral border

obliquus capitis inferior

contents of the suboccipital triangle

vertebral artery and suboccipital nerve