BRACHIAL PLEXUS Flashcards
Formed By
Ventral Branches of Spinal Nerves
C6-C7-C8 and TH1
Location
- Cranial to 1st rib
- btw long muscles of the neck & scalenii muscle
- To medial shoulder –> FL –> Distal FL
Innervation of
- Skin and muscle of Thoracic limb
- Part of shoulder Girdle
- Lateral wall of thorax and abdomen
Type of branches
Mixed
From cerebrospinal fibers
+ Autonomous fibers (from stellate ganglion)
Main Nerves
N. Suprascapularis N. Subscapularis N. Musculocutaneus N. Axillaris N. Radialis N. Ulnaris N. Medianus
Nerves supplying Extrinsic muscles of the FL
N. Brachiocephallicus Nn. Pectoralis cranialis N. Thoracicus Longus N. Thoracodorsalis N. Thoracicus Lateralis N.Intercostobrachialis Nn. Pectoralis caudalis
Nerves supplying Extrinsic muscles of the FL
N. Brachiocephallicus
- C6
- M: Brachiocephallic M
- S: Skin on cranial antibrachi
Nerves supplying Extrinsic muscles of the FL
Nn. Pectoralis Cranialis
C6, C7, C8
M:
- Pectoralis Superficialis M.
- Subclavian M.
Nerves supplying Extrinsic muscles of the FL
N. Thoracicus Longus
C7
M: Serrarus ventralis pars thoracis
Nerves supplying Extrinsic muscles of the FL
N. Thoracodorsalis
(C7) C8 (Th1)
M: Latissimus Dorsi M.
Nerves supplying Extrinsic muscles of the FL
N. Thoracicus Lateralis
C8, T1 M: - Pectoralis Profundus M - Cutaneus Trunchii M - Mm. Preputialis Cranialis (in males)
S:
Skin lateral on Thorax
Covering the Triceps Brachi M.
Nerves supplying Extrinsic muscles of the FL
N.Intercostobrachialis
C8, T1 M: - Pectoralis Profundus M - Cutaneus Trunchii M - Mm. Preputialis Cranialis (in males)
S:
Skin lateral on Thorax
Covering the Triceps Brachi M.
Nerves supplying Extrinsic muscles of the FL
Nn. Pectoralis caudalis
C8, T1, (T2)
M: Pectoralis Profundus
Nerves supplying Extrinsic muscles of the FL
Lymphnodes
Ln. Pectoralis superficialis (M.Pectoralis superficialis)
Ln. Pectoralis Profundus (M.Pectoralis profundus)
Nerves Supplying INTRASIC Muscles of the FL
N.Suprascapularis N.Subscapularis N. Musculocutaneus N. Axillaris N. Radialis N. Medianus N. Ulnaris
Nerves Supplying INTRASIC Muscles of the FL
N.Suprascapularis
C6, C7 M: M.Supraspinatus M.Infraspinatus Art. Humerii
Nerves Supplying INTRASIC Muscles of the FL
N.Subscapularis
C6, C7 (C8)
M: Cranial and medial Part
Nerves Supplying INTRASIC Muscles of the FL
N.Musculocutaneus
C7, C8 M: M.Coracobrachialis M.Biceps Brachii Brachial M. of FL
S: Skin of medial antebrachii
Nerves Supplying INTRASIC Muscles of the FL
N.Axillaris
C7, C8 M: M.Subscapularis (caud) M.Teres major M.Teres Minor M.deltoideus Art.humerii (M.Cleidobrachialis)
S:
Skin of front surf of Antebranchii
Nerves Supplying INTRASIC Muscles of the FL
N.Radialis
C7, C8, Th1 M: M.Triceps Brachii M.Anconeus M. Tensor Fascia Antebrachii M. Brachialis M. Extensor Carpi Radialis M. Extensor Digitorum Communis M. Extensor Digitorum Lateralis M. Extensor Carpi Ulnaris M. Abductor digiti I longus M. Brachioradialis M. Supinator
S:
Skin of lateral Antebrachii
Nerves Supplying INTRASIC Muscles of the FL
N.Medianus
C8, Th1 M: M.Flexor radialis M. Pronator Teres M. Pronator Quadratus M. Flexor digitorum Profundus M. Flexor digitorum superficialis S: Skin palmar to metacarpus \+ digits (with n.ulnaris)
Nerves Supplying INTRASIC Muscles of the FL
N. Ulnaris
C8, T1, (T2) M: M.Flexor carpi Ulnaris M. Flexor digitorum Profundus M. Flexor digitorum Superficialis M.Interosseus
S:
Skin caudal on antebrachii
+ Dorsolat on metacarpus
+ Digits
Nerves Supplying INTRASIC Muscles of the FL
LN
Ln. Cervicalis Superficialis
