Deep Back And Suboccipital Triangle Flashcards
blood supply to serratus posterior superior?
posterior intercostal a.
Innervation for Serratus posterior superior
ventral rami T2-T5 intercostal n.
action of serratus posterior superior?
elevates ribs
distal attachment of serratus posterior superior?
superior border of ribs 2-4
proximal attachment of serratus posterior superior?
spinous process of C7-T3 vertebrae and nuchal ligament
innervation of serratus posterior inferior
T9-T11 intercostal nerves and subcostal nerve (T12), ventral rami
blood supply to serratus posterior inferior?
posterior intercostal arteries
action of serratus posterior inferior?
depress ribs
distal attachment of serratus posterior inferior
inferior borders of ribs 8-12, near their angles
proximal attachment of serratus posterior inferior?
spinous processes of T11-L2 vertebrae
origin for splenius cervicis and splenius capitis?
nuchal ligament and spinous processes of C7-T6
insertion of splenius cervicis
tubercles of transverse processes of C2-C3 (sometimes C4) vertebrae
insertion of splenius capitis
lateral parts of mastoid processes and superior nuchal line
actions of splenius capitis and splenius cervicis?
bilaterally: extend head and neck
unilaterally: laterally flex neck and rotate head to side of contracting muscle
Blood supply to splenius capitis and splenius cervicis?
transverse cervical a, occipital a, and muscular branches from aorta
innervation to splenius cervicis and splenius cervicis?
dorsal rami of spinal nerves
3 muscles that make up erector spine group?
iliocostalis, longissimus, spinal (outside->in “I love Spaghetti)
actions of the erector spine group?
bilaterally: extend vertebral column and head
unilaterally: laterally flex vertebral column
innervation of erector spinae group?
dorsal rami of spinal nerves
what are the 3 divisions of the iliocostalis group?
lumborum, thoracis, and cervicis
origin of iliocostalis muscle?
broad common tendon attaches to iliac crest, posterior part of sacrum, sacroiliac ligaments, sacral and inferior lumbar spinous processes, and supraspinous ligament
insertions of iliocostalis muscles?
fibers run superiorly to angles of ribs and transverse processes
blood supply of iliocostalis?
posterior intercostal and lumbar arteries
origin of longissimus thoracis?
SAME AS ILIOCOSTALIS
broad common tendon attaches to iliac crest, posterior part of sacrum, sacroiliac ligaments, sacral and inferior lumbar spinous processes, and supraspinous ligament
insertion of longissimus thoracis?
fibers run superiorly to ribs and adjacent transverse processes of thoracic vertebrae
blood supply to longissimus thoracis?
posterior intercostal arteries
origin of longissimus cervicis?
transverse processes of cervical vertebrae
insertion of longissimus cervicis?
firers run superiorly to ribs and adjacent transverse processes of vertebrae (some parts hard to distinguish from L capitus)
blood supply to longissimus cervicis?
posterior intercostal arteries
origin of longissimus capitis?
transverse processes of cervical vertebrae
insertion of longissimus capitis?
mastoid processes
blood supply to longissimus capitis?
occipital artery
thoracis spinalis fibers run where?
run superiorly from spinous process to spinous process in upper thoracic region
three parts of spinalis group?
thoracis, cervicis and capitis (these two can be difficult to differentiate, capitus may be entirely missing)
blood supply to spinalis group?
posterior intercostal arteries
3 muscle groups within transversospinalis group?
semispinalis, rotatores, multifidus
innervation of transversospinalis group?
dorsal rami of spinal nerves
3 divisions of semispinalis group?
thoracis, cervicis, and capitis
blood supply to semispinalis cervicis?
deep cervical artery
origin/insertion of semispinalis cervicis?
cervical transverse processes to spinous processes of 2nd cervical vertebrae
blood supply to semispinalis thoracis?
posterior intercostal arteries
origin/insertion of semispinalis thoracis?
transverse to spinous processes in thoracic region
action of semispinalis group?
extend head, thoracic and cervical regions; rotates them contralaterally
origin/insertion of semispinalis capitis?
(superficial to cervicis) transverse processes of thoracic vertebrae to nuchal line
blood supply to semispinalis capitis?
deep cervical artery
where do multifidus muscles originate and insert?
originate on transverse processes and insert on spinous processes
what do multifidus muscles cover?
lamina and span vertebral segments from sacrum to cervical region
where are multifidus muscles the thickest?
lumbar region
what is the blood supply for multifidus muscles?
posterior lumbar arteries
what is the action of the multifidus muscle group?
stabilizes vertebrae during localized movements of vertebral column
rotatores brevis runs where?
transverse process of one vertebrae to base of spinous process of next vertebra above (one intervertebral joint)
rotatores longs runs where?
transverse process of one vertebra to spinous process of 2nd vertebrae above (spans 2 intervertebral joints)
where are the rotatores easiest to see?
thoracic region
what is the blood supply to rotators?
posterior intercostal arteries
what are the actions of the rotatores?
extends head, thoracic, & cervical regions; rotates them contralaterally
innervation of interspinales?
dorsal rami of spinal nerves
blood supply to interspinales?
vertebral a., occipital a., posterior intercostal a.
innervation of intertransversari?
dorsal AND VENTRAL rami of spinal nerves
