Muscle Innervations Flashcards
Sternocleidomastoid (SCM)
spinal accessory, C2, C3
Scalenes
C4-6 spinal (a), C3-8 (m), C4-6 (p)
Descending part of trapezius
spinal accessory, 3rd & 4th cervical
Internal intercostals
intercostal
External intercostals
intercostal nerve to specific segment
Diaphragm
phrenic
External oblique
intercostal & subcostal
Transversus abdominus
ventral 7-12th thoracic spinal, 1st lumbar spinal
Rectus abdominus
anterior 6-12th, thoracic spinal
Splenius capitis
2nd & 3rd cervical
Splenius cervicis
lower cervical
Erector spinae: iliocostalis
thoracic & lumbar (lumborum), thoracic (thoracic), cervical & thoracic (colli)
Erector spinae: longissimus
thoracic & lumbar (thoracis), cervical & upper thoracic (cervicis), cervical & upper thoracic (capitis)
Erector spinae: spinalis
thoracic & upper lumbar (thoracis), lower cervical & upper thoracic (colli)
Transversospinales: multifidi
cervical, thoracic, lumber
Transversospinales: semispinalis
thoracic (thoracis), lower cervical & upper thoracic (colli), 2nd & 3rd cervical (capitis)
Transversospinales: rotatores
thoracic
Pec major
C5-T1 (medial, lateral, pectoral)
Pec minor
C5-T1
Subclavius
C5-C6
Serratus anterior
C5, 6, 7 (long thoracic)
Trapezius
spinal accessory, C3-C4 spinal
Latissimus dorsi
C6-C8 (thoracodorsal)
Levator scapulae
C5 (dorsal scapular), C3, C4
Rhomboid major
C4-C5 (dorsal scapula)
Rhomboid minor
C4-C5
Deltoid
axillary
Supraspinatus
C4, 5, 6 (suprascapular)
Infraspinatus
C5-C6 (suprascapular)
Teres minor
C5-C6 (axillary)
Subscapularis
C5-C7 (upper & lower subscapular)
Teres major
C5-C7 (lower subscapular)
Coracobrachialis
C5-C7 (musculocutaneous)
Biceps brachii
musculocutaneous (C5-6)
Bracialis
musculocutaneous (C5-6)
Brachioradialis
radial (C5-6)
Triceps brachii
radial (C6-8)
Anconeus
radial (C7-8)