Innervation Flashcards
Brachialis
Musculocutaneous C5-C6, (C7)
Biceps brachii
Musculocutaneous C5-C6
Brachioradialis
Radial C5-C6, (C7)
Pronator teres
Median C6-C7
Flexor carpi ulnaris
Ulnar C7-C8
Triceps
Radial C6-C8
Anconeus
Radial C7-C8, (TI)
Supinator
Posterior interosseous (radial) C5-C6
Pronator quadratus
Anterior interosseous (median) C8, TI
Flexor carpi radialis
Median C6-C7
Extensor carpi radialis longus
Radial C6-C7
Extensor carpi radialis brevis
Posterior interosseous (radial) C7-C8
Extensor carpi ulnaris
Posterior interosseous (radial) C7-C8
Deltoid (anterior fibers)
Axillary (circumflex) C5-C6 (posterior cord)
Pectoralis major (clavicular fibers)
Lateral pectoral C5-C6 (lateral cord)
Coracobrachialis
Musculocutaneous C5-C7 (lateral cord)
Biceps
Musculocutaneous C5-C7 (lateral cord)
Deltoid (posterior fibers)
Axillary (circumflex) C5-C6 (posterior cord)
Teres major
Subscapular C5-C6 (posterior cord)
Teres minor
Axillary (circumflex) C5-C6 (posterior cord)
Latissimus dorsi
Thoracodorsal C6-C8 (posterior cord)
Pectoralis major
(sternocostal fibers)
Lateral pectoral C5-C6 (lateral cord)
Medial pectoral C8, Tl (medial cord)
Triceps (long head)
Radial C5-C8, T1 (posterior cord)
Infraspinatus
Suprascapular CS-C6 (brachial plexus trunk)
Supraspinatus
Suprascapular CS-C6 (brachial plexus trunk)
Subscapularis
Subscapular CS-C6 (posterior cord)
Rhomboid major
Dorsal scapular (C4), C5
Rhomboid minor
Dorsal scapular (C4), C5
Levator scapulae
C3-C4 nerve roots C3-C4
Dorsal scapular
Pectoralis minor
Medial pectoral C8, Tl (medial cord)
Trapezius (upper and lower fibers)
Accessory Cranial nerve XI
C3-C4 nerve roots (C3-C4)
Serratus anterior
Long thoracic C5-C6, (C7)
Lateral (external) pterygoid)(ipsilateral muscle)
Mandibular (CN V)
Mylohyoid
Inferior alveolar (CN V)
Geniohyoid
Hypoglossal (Cl XII)
Digastric
Inferior alveolar (CN V) Facial (CN VII)
Masseter
Mandibular (CN V)
Temporalis
Mandibular (CN V)
Medial (internal) pterygoid (contralateral muscle)
Mandibular (CN V)
Stylohyoid
Facial (CN VII)
Rectus capitis anterior
CI-C2
Rectus capitis lateralis
CI-C2
Longus capitis
CI-C3
Hyoid muscles
Inferior alveolar nerve
Facial nerve
Hypoglossal nerve
Ansa cervicalis
Obliquus capitis superior
CI
Sternocleidomastoid
Accessory C2
Splenius capitis
C4-C6
Semispinalis capitis
CI-C8
Longissimus capitis
C6-C8
Spinalis capitis
C6-C8
Rectus capitis posterior minor
CI
Rectus capitis posterior major
CI
Obliquus capitis inferior
CI
Semispinalis capitis
CI-C8
Longus capitis
CI-C3
Longus coli
C2-C6
Scalenus anterior
C4-C6
Scalenus medius
C3-C8
Scalenus posterior
C6-C8
Splenius cervicis
C6-C8
Semispinalis cervicis
CI-C8
Longissimus cervicis
C6-C8
Iliocostalis cervicis
C6-C8
Multifidus
CI-C8, Tl-Tl2, Ll-L5
Interspinalis cervicis
CI-C8
Rectus capitus posterior major
C3-C4
Rotatores brevis
CI
Rotatores longi
CI-C8
Intertransversarii
CI-C8
CI-C2
Rectus lateralis, rectus capitis anterior, longus capitis, longus coli, longus cervicis,
sternocleidomastoid
C3
Longus capitis, longus cervicis, trapezius, scalenus medius
C4
Diaphragm, trapezius, levator scapulae, scalenus anterior, scalenus medius
C5
Rhomboid major and minor, deltoid, supraspinatus, infraspinatus, teres minor,
biceps, scalenus anterior and medius
C6
Serratus anterior, latissimus dorsi, subscapularis, teres major, pectoralis major
(clavicular head), biceps, coracobrachialis, brachialis, brachioradialis, supinator,
extensor carpi radialis longus, scalenus anterior, medius and posterior
C7
Serratus anterior, latissin1Us dorsi, pectoralis major (sternal head), pectoralis
minor, triceps, pronator teres, flexor carpi radialis, flexor digitorum
superficialis, extensor carpi radialis longus, extensor carpi radialis brevis,
extensor digitorum, extensor digiti minimi, scalenus medius and posterior
C8
Pectoralis major (sternal head), pectoralis minor, triceps, flexor digitorum superficialis, flexor digitorum profundus, flexor pollicis longus, pronator quadratus, flexor carpi ulnaris, abductor pollicis longus, extensor pollicis longus, extensor pollicis brevis, extensor indicis, abductor pollicis brevis, flexor pollicis brevis, opponens pollicis, scalenus medius and posterior
T1
Flexor digitorum profimdus, intrinsic muscles of the hand (except extensor pollicis brevis), flexor pollicis brevis, opponens pollicis
Orbicularis oris
VII (Zygomatic, buccal, and mandibular branches)
Depressor anguli oris
VII (Buccal and mandibular branches)
Levator anguli oris
VII (Zygomatic and buccal branches)
Zygomaticus major
VII (Zygomatic and buccal branches)
Risorius
VII (Zygomatic and buccal branches)
Levator labii superioris
VII (Zygomatic and buccal branches)
Buccinator
VII (Buccal branches)
Mentalis
VII (Mandibular branches)
Nasalis
VII (Zygomatic and buccal branches)
Orbicularis oculi
VII (Temporal and zygomatic branches)
Procerus
VII (Temporal and zygomatic branches)
Corrugator
VII (Temporal branches)
Frontalis
VII (Temporal branches)
Extensor indices (second finger)
Posterior interosseous (radial) C7-C8
Extensor digiti minimi (little finger)
Posterior interosseous (radial) C7-C8
Flexor digitorum profundus
Anterior interosseous (median) C8, Tl
Anterior interosseous (median): C8, Tl
lateral two digits
Ulnar: medial two digits C8, Tl
Flexor digitorum superficialis
Median C7-C8, Tl
Lumbricals
First and second: median; third C8, Tl and fourth: ulnar (deep C8, Tl terminal branch)
Interossei
Ulnar (deep terminal branch) C8, Tl
Flexor digiti minimi (little finger)
Ulnar (deep terminal branch) C8, Tl
Dorsal interossei
Ulnar (deep terminal branch) C8, Tl
Abductor digiti minimi (little finger)
Ulnar (deep terminal branch) C8, Tl
Palmar interossei
Ulnar (deep terminal branch) C8, Tl
Extensor pollicis longus
Posterior interosseous (radial) C7-C8
Extensor pollicis brevis
Posterior interosseous (radial) C7-C8
Abductor pollicis longus
Posterior interosseous (radial) C7-C8
Flexor pollicis brevis
Superficial head: median (lateral C8, Tl terminal branch)
Deep head: ulnar C8, Tl
Flexor pollicis longus
Anterior interosseous (median) C8, Tl
Opponens pollicis
Median (lateral terminal branch) C8, Tl
Abductor pollicis brevis
Median (lateral terminal branch) C8, Tl
Adductor pollicis
Ulnar (deep terminal branch) C8, Tl
Opponens digiti minimi
Ulnar (deep terminal branch) C8, Tl
Rectus abdominis
T6-Tl2
External abdominal oblique
T7-Tl2
Internal abdominal oblique
T7-Tl2,Ll
Spinalis thoracis
Tl-Tl2
Iliocostalis thoracis
Tl-Tl2
Longissimus thoracis
Tl-Tl2
Semispinalis thoracis
Tl-Tl2
Interspinalis
Tl-Tl2
Intertransverse
Tl-Tl2
Transverse abdominis
T7-Tl2, Ll
Serratus posterior superior (2nd to 5th ribs)
2- 5 intercostal
Iliocostalis cervicis (1st to 6th rib)
C6-C8
Levatores costarum (all ribs)
Tl-Tl2
Quadratus lumborum (12th rib)
Tl2, Ll-L4
Intercostals (internal and external)
1-11 intercostal
Diaphragm
Phrenic
External intercostals
1-11 intercostal
Transverse thoracis (sternocostalis)
1-11 intercostal
Iliocostalis lumborum
Ll-L3
Longissimus
Tl-L3
Serratus posterior inferior
T9-Tl2
Transversalis
Ll-L5
Intertransversarii
Ll-L5
Psoas major
Ll-L3
Erector spinae -iliocostalis lumborum,
longissimus thoracis
Ll-L3
Ll-L5
Gluteus maximus
Ll-L5