Spinal Lab - Muscles Actions Flashcards
Splenius Cervicis
Laterally flex and rotate neck; BILATERALLY extend neck
Iliocostalis Lumborum
Extension, lateral flexion, rotation of L spine; lateral movement of pelvis
Iliocostalis Thoracis
Extension, lateral flexion T spine
Iliocostalis Cervicis
Extension, lateral flexion, rotation lower C spine
Longissimus Thoracis
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
Lateral flexion of neck; BILATERALLY extends neck
Spinalis Thoracis
Extend T spine
Spinalis Cervicis
Lateral flexion and rotation of C spine; BILATERALLY extend neck
Spinalis Capitis
Lateral flexion and rotation of head; BILATERALLY extend head
Semispinalis Thoracis
Extension, rotation, and lateral flexion of upper T and lower C spine; BILATERALLY extend T spine
Semispinalis Cervicis
Extension, rotation, and lateral flexion of C spine; BILATERALLY extend neck
Semispinalis Capitis
Turns face to side; BILATERALLY extends head (neck inadvertently)
Rectus capitis posterior major
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
Quadratus Lumborum
Steadies origin of diaphragm; when pelvis is fixed, it 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; rotation to the contralateral side
Longus Colli
Flexion and extension of neck; rotation to the contralateral side
Longus Capitis
Flex the head
Rectus Capitis Anterior
Flex the head
Rectus Capitis Lateralis
Laterally flex the head to ipsilateral side
Splenius Capitis
Laterally flex head and rotate face to side; BILATERALLY extend head
