Neck Muscles Flashcards
Iliocostalis cervicis origin
Angles of upper 6 ribs
Iliocostalis cervicis insertion
Transverse processes of 4th to 6th cervical vertebrae
Iliocostalis cervicis action
Bilateral - extension of vertebral column
Unilateral - bend vertebral column to same side (lateral flexion)
Iliocostalis cervicis innervation
Posterior rami of spinal nerves in area of muscle
Iliocostalis cervicis blood supply
Occipital, deep cervical, vertebral arteries
Longissimus cervicis origin
Transverse processes of upper 4 to 6 thoracic vertebrae
Longissimus cervicis insertion
Transverse processes C2 - C6
Longissimus cervicis action
Bilateral - extension of vertebral column
Unilateral - bend vertebral column towards same side (lateral flexion)
Longissimus cervicis innervation
Posterior rami of spinal nerves in area of muscle
Longissimus cervicis blood supply
Occipital, deep cervical, vertebral arteries
Splenius capitis origin
Ligamentum nuchae, spinous processes of 7th cervical and first 3-4 thoracic vertebrae
Splenius capitis insertion
Mastoid process & occipital bone
Splenius capitis action
Rotation of head and cervical vertebral column to same side
Splenius capitis innervation
Posterior rami of middle cervical spinal nerves
Splenius capitis blood supply
Occipital, deep cervical arteries
Splenius cervicis origin
Spinous processes of T3-T6 vertebrae
Splenius cervicis insertion
Transverse processes of C1-C4
Splenius cervicis action
Rotation of head and cervical vertebral column to same side
Splenius cervicis innervation
Posterior rami of middle cervical spinal nerves
Splenius cervicis blood supply
Occipital & deep cervical arteries
Semispinalis cervicis origin
Transverse processes of upper 5-6 thoracic vertebrae
Semispinalis cervicis insertion
Spinous processes of axis to C5 vertebrae
Semispinalis cervicis action
Extension of vertebral column
Semispinalis cervicis innervation
Posterior rami of cervical and thoracic spinal nerves
Semispinalis cervicis blood supply
Occipital, deep cervical, vertebral arteries
Obliquus capitis inferior origin
Spinous process of axis
Obliquus capitis inferior insertion
Transverse process of atlas
Obliquus capitis inferior action
Rotation of atlas (turn head to same side)
Obliquus capitis inferior innervation
Posterior ramus of C1
Obliquus capitis inferior blood supply
Vertebral artery and occipital arteries
Obliquus capitis superior origin
Transverse process of atlas
Obliquus capitis superior insertion
Occipital bone
Obliquus capitis superior action
Extension and lateral bending of the head
Obliquus capitis superior innervation
Posterior ramus of C1
Obliquus capitis superior blood supply
Vertebral and occipital arteries
Rectus capitis posterior major origin
Spinous process of axis
Rectus capitis posterior major insertion
Occipital bone
Rectus capitis posterior major
Extension of head, rotation of head to same side
Rectus capitis posterior major innervation
Posterior ramus of C1
Rectus capitis posterior major blood supply
Vertebral and occipital arteries
Rectus capitis posterior minor origin
Posterior tubercle of atlas
Rectus capitis posterior minor insertion
Occipital bone
Rectus capitis posterior minor action
Extension of head, rotation of head to same side
Rectus capitis posterior minor innervation
Posterior ramus of C1
Rectus capitis posterior minor blood supply
Vertebral and occipital arteries
Sternocleidomastoid origin
Sternum and medial 1/3 clavicle
Sternocleidomastoid insertion
Mastoid process of temporal bone
Sternocleidomastoid action
Both muscles - flexion of head and neck
One muscle - lateral flexion (turns face to opposite direction)
Sternocleidomastoid innervation
Accessory nerve (motor) spinal nerves C2 C3 (sensory)
Sternocleidomastoid blood supply
Superior thyroid, occipital, suprascapular, posterior auricular arteries
Anterior scalene origin
Transverse processes of C3 - C6 vertebrae
Anterior scalene insertion
First rib
Anterior scalene action
Fixation or elevation of first rib during inhalation. With rib fixed - lateral flexion of neck
Anterior scalene innervation
Anterior rami of cervical spinal nerves at origin of muscle
Anterior scalene blood supply
Ascending cervical artery
Medial scalene origin
Transverse processes C2/3 - C7 vertebrae
Medial scalene insertion
First rib
Medial scalene action
Fixation or elevation of first rib during inhalation, with rib fixed - lateral flexion of neck
Medial scalene innervation
Anterior rami of cervical spinal nerves at origin of muscle
Medial scalene blood supply
Ascending cervical artery
Posterior scalene origin
Transverse processes of C4-C6
Posterior scalene insertion
Second rib
Posterior scalene action
Fixation or elevation of second rib during inhalation, with rib fixed - lateral flexion of neck
Posterior scalene innervation
Anterior rami of cervical spinal nerves at origin of muscle
Posterior scalene blood supply
Ascending cervical artery, superficial branch of transverse cervical artery
Longus colli origin
Bodies of C5-T3
Longus colli insertion
Anterior tubercle C1, bodies of C2&3, transverse processes of C3-C6
Longus colli action
Flexion, possibly lateral flexion of neck
Longus colli innervation
Anterior rami of C2-C6
Longus colli blood supply
Ascending pharyngeal, ascending cervical and vertebral arteries
Longus capitis origin
Transverse processes C3-C6
Longus capitis insertion
Occipital bone
Longus capitis action
Flexion of head and upper cervical vertebrae
Longus capitis innervation
Anterior rami of C1-C3
Longus capitis blood supply
Ascending cervical artery and inferior thyroid artery