Parts of Brachial Plexus
The superior trunk becomes what cord
Lateral Cord
ANTERIORLY What part of the arm does the axillary nerve innervate
upper lateral arm
Triceps Brachii Innervation
Radial nerve
Lesion of upper trunk of brachial plexus (C5/6)
Erb's Palsy
What muscles are innervated by the musculocutaneous nerve
Coracobrachialis, Biceps Brachii, Brachialis
The middle trunk becomes what branch
Radial and Axillary branches
POSTERIORLY what part of the arm does the radial nerve innervate
lower arm, forearm and back of palm
Coracobrachialis action
Flexion, Internal rotation, Adduction
Lesion of lower trunk of brachial plexus (C8/T1)
Klumpke's Palsy
What muscles are innervated by the thoracodorsal nerve
Latissimus Dorsi
C8 becomes what branch
Ulnar branch
palm from thumb to half of ring finger
Brachialis Innervation
Musculocutaneous nerve
What is Crutch Palsy
Radial nerve impingement in posterior cutaneous arm
A lesion in C7 would affect what nerves
Long Thoracic nerve, Upper and Lower Subscapular nerves, Thoracodorsal nerve, Radial nerve, Axillary nerve
What nerves come off the roots section
dorsal scapular nerve and long thoracic nerve
ANTERIORLY what part of the arm does the musculocutaneous nerve innervate
lateral forearm
Pectoralis Major action
Adduction, International rotation
Clavicular and Sternocostal parts - flexion
What nerve is impinged in Saturday Night Palsy
radial nerve
A lesion in the middle trunk would affect what muscles
Teres major, Subscapularis, Latissimus Dorsi, Triceps brachii, Teres minor, Deltoid
What nerves are in the cords section
Lateral pectoral nerve
upper and lower subscapular nerve, thoracodorsal nerve
Medial cutaneous nerves of arm and forearm and medial pectoral nerve
What root nerve innervate the tip of the thumb finger
C6
Biceps brachii action
Flexion and Supination at elbow joint
Flexion of shoulder joint
Adduction and Internal Rotation of humerus
What nerves are affected in Erb's Palsy
Suprascapular, axillary, musculocutaneous
What muscles and actions would be affected by a lesion in the lateral cord
Pectoralis Major - adduction, internal rotation, flexion
Coracobrachialis - flexion, adduction, internal rotation
Biceps Brachii - flexion and supination of elbow joint, flexion of shoulder joint, adduction and internal rotation of humerus
Brachialis - Flexion of arm