Anatomy Deep Back and Spinal Cord Flashcards
Origin and insertion of the splenius capitis…
Origin: Nuchal ligament and spinous processes of C7-T3
Insertion: Mastoid process and occipital bone
Innervation of splenius capitus
Posterior ramus of spinal nerves C3, C4
Blood supply of the splenius capitus
muscular branches of the aorta
Actions of the splenius capitus
extend, rotate, laterally flex the head
Origin and insertion of the splenius cervicis
Origin: Spinous process of T3-T6
Insertion: Tranverse process C1-C3
Innervation of splenius cervicis
Dorsal rami of C5, C6
Blood supply of splenius cervicis
Transverse cervical artery and occipital artery
Actions of the splenius cervicis
Bilaterally: extend neck and head
Unilaterally: Lateral flexion, rotation to the same side
Origin and insertion of iliocostalis..
Origin: Sacrum, lliac Crest,Spinous Processes of T11-L5
Insertion: Angles of ribs and transverse processes C4-C6
Innervation of iliocostalis
Posterior (dorsal) branch of spinal nerve
Blood supply of iliocostalis
Muscular branches of the aorta
Actions of iliocostalis
Unilaterally: laterally flex the vertebral column to the same side
Bilaterally: Extend the vertebral column.
Origin and insertion of longissimus
Origin: Sacrum, Iliac Crest, Spinous processes of lower thoracic and lumbar, transverse processes of T1-T5
Insertion: Mastoid process, transverse processes of all thoracic vertebrae, upper lumbar, and C2-C6
Innervation of the longissimus
Posterior (dorsal) branch of spinal nerve
Blood supply of longissimus
Lateral Sacral Artery
Actions of the longissimus
Laterally: Flex the head and neck to the same side
Bilaterally: Extend the vertebral column
Origin and insertion of spinalis
Origin: Spinous process of upper lumbar and lower thoracic vertebrae, nuchal ligament and spinous process of C7, Spinous process of upper thoracic vertebrae.
Cervicis Insertion: Spinous process of C2-C6, T3-T8, between inferior and superior nuchal line
Innervation of spinalis
Posterior branch of spinal nerve
Blood supply of spinalis
Lateral Sacral Artery
Actions of spinalis
Laterally: Flex the head and neck to the same side.
Bilaterally: Extend the vertebral column
Origin and insertion of semispinalis capitis
Origin: Transverse processes of lower cervical and higher thoracic column
Insertion: Area between superior and inferior nuchal line
Innervation of semispinalis capitis
Greater occipital nerve
Actions of semispinalis capitis
Extends the head
Origin and insertion of semispinalis
Origin: transverse process of T1-T5 vertebrae
Insertion: spinous processes of C1-C5 vertebrae
Innervation of semispinalis cervicis
Dosral primary rami of C5 and C6
Actions of the semispinalis cervicis
Extention of the cervical spine
Lateral flexion of the cervical spine to the ipsilateral side
Rotation of the cervical spine to ipsilateral side
Blood supply of semispinalis cervicis
Superior intercostal artery
Dorsal rami of posterior intercostal arteries
Origin and insertion of multifidus
Cervical origin: Articular processes of lower cervical vertebrae
Thoracic Origin: Transverse processes all
Lumbar region: sacrum, thoracolumbar fascia, iliac crest, PSIS
Insertion: Spinous processes from L5-C2
Innervations of multifidus
Dorsal Rami of spinal nerves
Actions of multifidus
Proprioception
Bilaterally: Extension of back
Unilaterally: Lateral flexion to contralateral side, rotation to contralateral side
Blood supply of multifidus
muscular branches of aorta
