Written — back, shoulder, and nerves

passes posterior to pectoralis minor into the arm becomes brachial artery when it passes distal to the inferior border of the teres major

Where does Axillary artery pass? When does it become brachial artery?

Laterally flexes the neck and rotates the head to the side fo active muscles (Splenius Capitis only)Extend neck and head when working together (Splenius Capitis and cervicis)

When acting alone, what does the splenius muscle do? Acting together?

Superior portion of subscapularis

What structures does the upper subscapular nerve innervate?

Flexor carpi ulnaris and ulnar half of flexor digitorum profundus (forearm); most intrinsic muscles of hand; skin of hand medial to axial line of digit 4

What structures does the ulnar nerve innervate?

Latissimus Dorsi

What structures does the thoracodorsal nerve innervate?

All muscles of posterior compartments of arm and forearm; skin of posterior and inferolateral arm, posterior forearm, and dorsum of hand lateral to axial line of finger 4

What structures does the Radial nerve innervate?

Muscles of anterior compartment of arm (coracobrachialis, biceps brachii, and brachialis) skin of lateral aspect of forearm

What structures does the musculocutaneous nerve innervate?

Pectoralis minor and sternocostal part of pectoralis major

What structures does the median pectoral nerve innervate?

Muscles of anterior forearm compartment (except for flexor carpi ulnaris and ulnar half of flexor digitorum profundus); 5 intrinsic muscles in thenar half of palm and palmar skin

What structures does the median nerve innervate?

Skin of medial side of arm. As far distally as medial epicondyle of Humerus and Olecranon of Ulna

What structures does the medial cutaneous nerve of arm innervate?

Skin of medial side of forearm, as far distally as wrist

What structures does the media cutaneous nerve of forearm innervate?

Primarly Pec major, some pec minor

What structures does the lateral pectoral nerve innervate?

Glenohumeral (shoulder) joint, teres minor and deltoid muscles, skin of superolateral arm (over inferior part of deltoid)

What structures does the Axillary nerve innervate?

Inferior portion of subscapularis and teres major

What structures does Lower Subscapular nerve innervate?

Supraspinatus, Infraspinatus muscles, glenohumeral (shoulder) joint

What structures do the Suprascapular nerve innervate?

Rhomboids; occasionally levator scapulae

What muscles do the dorsal scapular nerve innervate?

anterior rami of the C5-T1 nerves, which constitute the roots of brachial plexus

What is the brachial plexus formed by?

Bilaterally: extend vertebral column and neck; as back is flexed, control movement by carefully lengthening fibers

Unilaterally: laterally flex vertebral column

What do the erector spinae muscles do? Bilaterally and Unilaterlly

left and right carotid arteries

what arteries supply blood to head?

- Iliocostalis

- Longissimus

- Spinalis

What are the 3 muscles in the erector spinae?

Upper limbs

The Brachial Plexus is a net work of nerves supplying the ...

union of the accompanying brachial and basilic veins at the inferior border of the teres major

The Axillary vein is formed by what

subclavian vein

The axillary vein ends at the lateral border of the first rib where it becomes the ...

Long thoracic nerve

nerve innervation for serratus anterior?

Brachial

Axillary artery turns into ... artery as you go down

Superior: pericardiacphrenic and musculophrenic arteries, branches of internal thoracic artery and the superior phrenic arteries arising from thoracic aorta

arteries supplying the superior surface of diaphragm?

Superior trunk: from the union of C5 and C6 roots

Middle trunk: a continuation of the C7 root

Inferior trunk: from union of the C8 and T1 roots

In the inferior part of the neck, the roots of the brachial plexus unite to form three trunks

A superior trunk from ...

A middle trunk from ...

An inferior trunk: from...