Neck and Trunk Flashcards
Sternocleidomastoid
Sternum and clavicle
Mastoid process
Bilaterally: flexes neck, extends head
Unilaterally: laterally bends neck, rotates face to opposites side
Accessory nerve
Scalene
Transverse processes of the cervical vertebrae
First and second ribs
Bilaterally: assist neck flexion
Unilaterally: neck lateral bending
Lower cervical nerves
Splenius capitis muscle
Lower half of nuchal ligament; spinous process of C7-T3
Lateral occipital bone; mastoid process
Bilaterally: extend head and neck
Unilaterally: laterally bends and rotates the face to same side
Middle and lower cervical nerves
Splenius Cervicis
Spinous process of T3-T6
Transverse process of C1-C3
Bilaterally: extend neck
Unilaterally: laterally bends and rotate face to same side
Middle and lower cervical nerves
Rectus abdominis
Pubic crest
Xiphoid process and costal cartilages of fifth to seventh ribs
Trunk flexion; compression of abdomen
7th-12th intercostal nerves
External oblique
Iliac crest, pubic tubercle, and linea Alba
Lower eight ribs laterally
Bilaterally: trunk flexion; compression of abdomen
Unilaterally: lateral bending to same side; rotation to opposite side
8-12 intercostal, iliohypogastric, and ilioinguinal nerves
Internal oblique
Ingunial ligament, iliac crest, thoracolumbar fascia
8-12 ribs, linea Alba
Bilaterally: trunk flexion; compression of abdomen
Unilaterally: lateral bending, rotation to same side
8-12 intercostal, iliohypogastric and ilioinguinal nerve
Transverse abdominis
Ingunial ligament, iliac crest, thoracolumbar fascia and costal cartilage of last 7 ribs
Pubic crest, abdominal aponeurosis, linea Alba
Compression of abdomen
7-12 intercostal, iliohypogastric and ilioinguinal nerve
Erector spinae muscle
Iliocostalis portion
Longissimus portion
Spinalis portion
Iliocostalis portion
Iliac crest, lower ribs
Angles of ribs, upper ribs, and transverse process of cervical vertebrae
Longissimus
Transverse processes at lower levels
Transverse process at upper levels, mastoid process
Spinalis portion
Spinous processes below
Spinous processes above
Bilaterally: extend neck and head
Unilaterally: rotate head and laterally bend neck and trunk to the same side
Spinal nerves
Transversospinalis
Transverse processes
Spinous processes of vertebrae above
Bilaterally: extend neck and trunk
Unilaterally: rotate head, neck, and truck to opposite side
Spinal nerve
Interspinales
Spinous process below
Spinous process above
Neck and trunk extension
Spinal nerve
Intertransversarii
Transverse process below
Transverse process above
Neck and trunk lateral bending to the same side
Spinal nerve
Quadratus Lumborum
Iliac crest
12 rib, transverse process of all 5 lumbar vertebrae
Trunk lateral bending
12th thoracic and 1st lumbar nerves
Longus colli
Upper: transverse process of C3-C5
Anterior tubercle, flex neck, assist lateral bending
Middle: C5-T3
Lower: T1-T3
Longus capitis
Transverse process C3-C6
Occipital bone
Flex head, upper neck
Rectus capitis anterior
Atlas
Occipital bone
Flexes head, stabilizes A0 joint
Rectus capitis lateralis
Transverse process of atlas
Occipital bone
Laterally bends head, stabilizes AO joint
Obliquus capitis superior
Posterior
Extension and stabilization of AO joint
Obliquus capitis inferior
Posterior
Extension, lateral bending, rotation to same side, stabilization of AA joint
Rectus capitis posterior minor
Posterior
Extension and stabilization of AO joint
Rectus capitis posterior major
Posterior
Extension, lateral bending, rotation to same side and stabilization of AO joint
