Muscles, innervations and actions Flashcards
Trapezius innervation
spinal accessory nerve, C1-C5 cord levels
Latissimus dorsi innervation
thoracodorsal nerve, ventral rami C6-C8
Levator Scapulae innervation
dorsal scapular nerve, ventral ramus C5 plus ventral rami C3, C4
Rhomboid Major innervation
dorsal scapular nerve, ventral ramus C5 plus ventral ramus C4
Rhomboid Minor innervation
dorsal scapularis nerve, ventral ramus C5 plus ventral ramus C4
Splenius Capitis innervation
dorsal rami C3-C5
Splenius Cervicis innervation
dorsal rami C5-C7
Iliocostalis Lumborum innervation
dorsal rami lower T, all L
Iliocostalis Thoracis innervation
drosal rami T1-T6
Iliocostalis Cervicis innervation
dorsal rami T1, T2; rarely C8
Longissimus Thoracis innervation
dorsal rami T and L nerves
Longissimus Cervicis innervation
dorsal rami C4-C8; T1-T2
Longissimus Capitis innervation
dorsal rami C1-C3; sometimes C4
Spinalis Thoracis innervation
dorsal rami T and upper L
Spinalis Cervicis innervation
dorsal rami C
Spinalis Capitis innervation
dorsal rami T1-T6i lower C, upper T
Semispinalis Thoracis innervation
dorsal rami T1-T6
Semispinalis Cervicis innervation
dorsal rami C6-C8
Semispinalis Capitis innervation
dorsal rami C1-C6
Multifidis innervation
dorsal rami C3-C8, T1-T12, L1-L5, sometimes S1
Rectus Capitis Posteroir Major innervation
supoccipital nerve, dorsal ramus C1
Rectus capitis Posteroir Minor innervation
suboccipital nerve, dorsal ramus C1
Obliquus Capitis Superior innervation
suboccipital nerve, dorsal ramus C1
Obliquus Capitis Inferior innervation
suboccipital nerve, dorsal ramus C1
Quadratus Lumborum innervation
ventral rami T12, L1-L3 or L4
Serratus Posterior Superior innervation
intercostal nerves; ventral rami T2-T5
Serratus Posterior Inferior innervation
intercostal nerves, ventral rami T9-T11
subcostal nerve, ventral ramus T12
Longus Colli innervation
ventral rami C2-C6, sometimes C7
Longus Capitis innervation
ventral rami C1-C3
Rectus Capitis Anterior innervation
ventral rami C1, C2
Rectus Capitis Lateralis innervation
ventral rami C1, C2
Anterior Scalene innervation
ventral rami C2-C6
Middle Scalene innervation
ventral rami C3-C8
Posteroir Scalene innervation
ventral rami C6-C8
Splenius Capitis action
laterally flex head and rotate face to side; bilaterally extend head
Splenius Cervicis action
Laterally flex and rotate neck; bilaterally extend neck
Iliocostalis Lumborum action
Extension, lateral flexion, rotation of L spine; lateral movement of pelvis
Iliocostalis Thoracis action
Extension, lateral flexion T spine
Iliocostalis Cervicis action
extension, lateral flexion, rotation lower C spine
Longissimus Thoracis action
lateral flexion T spine and ribs (L spine inadvertently); bilaterally act in extension of T and L spine, hold T and L spine erect, (increases L lordosis); lateral movement of pelvis
Longissimus Cervicis action
lateral flexion of neck; bilaterally extend neck
Longissimus Capitis action
rotate and laterally flex head; bilaterally extend head
Spinalis Thoracis action
extend T spine
Spinalis Cervicis action
lateral flexion and rotation of C spine; bilaterally extend neck
Spinalis Capitis action
lateral flexion and rotation of head; bilaterally extend head
Semispinalis Thoracis action
extension, rotation and lateral flexion of upper T and lower C spine; bilaterally extend T spine
Semispinalis Cervicis action
extension, rotation, and lateral flexion of C spine; bilaterally extend neck
Semispinalis Capitis action
turns face to side; bilaterally extends head (neck inadvertently)
Rectus Capitis Posterior Major action
turns face to side; bilaterally extends head
Rectus Capitis Posterior Minor
extends head
Obliquus Capitis Superior
lateral flexion of head; bilaterally extends head
Obliquus Capitis Inferior
turns face to side
Quadtatus Lumborum
steadies origin of diaphragm; when pelvis is fixed, its will laterally flex the L spine; bilaterally extends the L spine; stabilizes and depresses the 12th rib
Serratus Posterior Superior
elevate upper 5 ribs in inspiration
Serratus Posterior Inferior
draws lower 4 ribs down and back; forced inspiration
Longus Colli
flexion and extension of neck; rotation ot the contralateral side
Longus Capitis
flex the head
Rectus Capitis Anterior
flex the head
Rectus Capitis Lateralis
laterally flex the head to ipsilateral side