What is the space between the arm and chest wall, which is th shape of a truncated pyramid
Axilla
What makes up the apex of the axilla
Its formed by the triangular space bounded by the clavicle scapula and the first rib
What makes up the base of the axilla
Skin and fascia
What makes up the anterior wall of the axilla
The pectoralis major
What makes up the posterior wall of the axilla
Latissimus dorsi and teres major
What makes up the medial wall of the axilla
Serratus anterior and upper ribs
What makes up the lateral wall of the axilla
Proximal medial aspect of the arm (bicipital furrow)
What are the contents of the axilla
Brachial plexus, axillary artery and vein, lymph nodes and adipose tissue
What is the axillary sheath
The deep fascia that encloses the brachial plexus and the blood vessels
What are the spinal nerve roots of a normal brachial plexus
C5, C6, C7, C8, T1
What spinal nerve roots make up the upper trunk
C5 and C6
What spinal nerve root make up the middle trunk
C7
What spinal nerve roots make up the lower trunk
C8, T1
Segmental innervation of dorsal scapular
C5
Dorsal scapular nerve motor supply
Rhomboid major, rhomboid minor, levator scapula
Dorsal scapular articular supply
Acromioclavicular joint
Segmental innervation of long thoracic nerve
C5,C6,C7
Long thoracic nerve motor supply
Serratus anterior
Segmental innervation of suprascapular nerve
C5 and C6
Suprascapular nerve motor supply
Supraspinatus and infraspinatus
Suprascapular nerve articular supply
shoulder joint and acromioclavicular joint
Segmental innervation of nerve to subclavius
C5 and C6
Nerve to subclavius motor supply
Subclavius and diaphragm
Nerve to subclavius articular supply
Sternoclavicular Joint
Segmental innervation of lateral pectoral nerve
C5, C6, C7
Lateral pectoral nerve motor supply
Pectoralis Major
Segmental innervation of musculocutaneous nerve
C5, C6, C7
Musculocutaneous nerve motor supply
Coracobrachialis, biceps brachii, and brachialis
Musculocutaneous nerve articular supply
Elbow Joint
Musculocutaneous nerve cutaneous supply
Lateral aspect of the forearm
Segmental innervation of medial pectoral nerve
C8 and T1
Medial pectoral nerve motor supply
Pectoralis major and pectoralis minor
Segmental innervation of medial brachial cutaneous nerve
T1
Medial brachial cutaneous nerve cutaneous supply
Medial aspect of arm
Segemental innervation of ulnar nerve
C8 and T1
Ulnar nerve motor supply
Flexor carpi ulnaris, half of flexor digitorum profundus, muscles associated with the fifth digit (hypothenar muscles)
Ulnar nerve articular innervation
Elbow and wrist joints
Segmental innervation of median nerve
C6, C7, C8, T1
Median nerve motor supply
Anterior forearm (pronator teres, flexor carpi radialis, palmaris longus, flexor digitorum superficialis, flexor pollicus longus, pronator quadratus and half of the flexor digitorum profundus), first digit (thenar muscles)
Median nerve articular supply
Elbow and wrist joint
Median nerve cutaneous supply
lateral 3/4 of the palmar surface of the palm and the skin of the first 3.5 digits (palmar and dorsal aspects)
Segmental innervation of upper subscapular nerve
C5
Upper subscapular nerve motor supply
Subscapularis
Segmental innervation of lower subscapular nerve
C6
Lower subscapular motor supply
subscapularis and teres major
Segmental innervation of axillary nerve
C5 and C6
Axillary nerve motor supply
Deltoid and teres minor
Axillary nerve articular supply
Shoulder joint and acromioclavicular joint
Axillary nerve cutaneous supply
Lateral aspect of the arm
Segmental innervation of radial nerve
C5, C6, C6, C8, T1
Radial nerve motor supply
Triceps brachii, anconeus, all posterior forearm muscles
Radial nerve articular supply
Elbow and wrist joints
Radial nerve cutaneous supply
Posterior arm and forearm, dorsum of hand, small area of skin below the thumb on the palmar aspect of the hand
Dermatome of C4
Skin over the tip of the shoulder
Dermatome of C5
Lateral side of the arm
Dermatome of C6
Lateral side of the forearm, digits one and half of two
Dermatome of C7
Skin of palm, digits two (half), three and four
Dermatome of C8
Medial side of forearm, digit five
Dermatome of T1
Medial side of arm
Dermatome of T2
Skin of axilla
Which nerve is the first to come off of the lateral cord
Lateral Pectoral Nerve
Which nerve passes through the belly of the coracobrachialis muscles and then runs between the biceps brachii and the brachialis muscles
Musculocutaneous Nerve
What is the first nerve to come off of the medial cord
Medial Pectoral Nerve
What nerve is associated with the surgical neck of the humerus
Axillary Nerve
What is the most common type of injury to the Brachial Plexus
Erb-Duchenne Palsy
Erb-Duchenne Palsy will greatly reduce movements of what part of the body
Shoulder
Klumpke’s Palsy will greatly reduce movement of what part of the body
Hands
