Nerve Innervations- Thoracic Limb Flashcards
Accessory n.
(AKA dorsal branch of cranial n. XI)
- Brachiocephalicus m.
- Trapezius m.
Ventral branches of Cervical and Thoracic Spinal n.
- Rhomboideus m.
- Omotransversarius m.
Lateral thoracic n.
- Cutaneous trunchi m.
Thoracodorsal n.
- Latissimus dorsi m.
Long thoracic n. & ventral branches of the spinal n.
- Serratus ventralis m.
Cranial & Caudal Pectoral n.
- Pectoral muscles
Axillary n.
Courses between subscapularis m. & teres major m.
- Deltoideus m.
- Teres minor m.
- Teres major m.
- Parts of subscapularis m.
Autonomous Zones:
- Cranial cutaneous antebrachial n.
Suprascapular n.
Courses between supraspinatus m. & subscapularis m.
- Supraspinatus m.
- Infraspinatus m.
Subscapular n.
Courses into the subscapularis m.
- Subscapularis m.
Musculocutaneous n.
Courses alongside the biceps brachii m.
- Coracobrachialis m.
- Biceps brachii m.
- Brachialis m.
Radial n.
Courses towards triceps brachii m.
Appears on the lateral side deep to the lateral head of the triceps brachii m.
- Tensor fasciae antebrachii m.
- Triceps brachii m.
- Anconeus m.
- Extensor carpi radialis m.
- Common digital extensor m.
- Lateral digital extensor m.
- Ulnaris lateralis m.
- Abductor digiti 1 longus m.
- Extensor carpii obliquus m.
- Supinator m.
Autonomous Zones:
Lateral cutaneous antebrachial n.
Median n.
Courses along with the brachial a.
- Flexor carpi radialis m.
- Superficial digital flexor m.
- Deep digital flexor m. (radial head only)
- Pronator teres m.
- Pronator quadratus m.
- Interosseous m.
Autonomous Zones:
Becomes sensory to the palmar paw (digit(s) in large animals)
Ulnar n.
Courses along with the median n. and continues caudal towards the olecranon
- Flexor carpi ulnaris m.
- Deep digital flexor m. (ulnar and humeral heads)
- Interosseous m.
Autonomous Zones:
- Caudal cutaneous antebrachial n.
- Becomes sensory to the lateral paw (digit(s) in large animals)
