Muscles of the Trunk Flashcards
erector spinae group of muscles
iliocostalis
longissimus
spinalis
iliocostalis lumborum inferior attachment
common tendon
iliocostalis lumborum superior attachment
inferior surface of the anlge of ribs 6 to 12
iliocostalis thoracis inferior attachment
upper surface of the angle of ribs 6 to 12
iliocostalis thoracic superior attachment
angle of ribs 1 to 6
iliocostalis cervicis inferiior attachment
angle of ribs 3 to 7
iliocostalis cervicis superior attachment
posterior tubercles of the transverse processes of C4-6
longissimus thoracis inferior attachment
common tendon
longissimus thoracis superior attachment
transverse processes of T1-T12 & areas between the tubercle & angle of ribs 3 to 12
longissimus cervicis inferior attachment
transverse processes of T1-4
longissimus cervicis superior attachment
posterior tubercles of the transverse processes of C2-6
longissimus capitis inferior attachment
transverse processes of T1-5 and articular processes of C4-7
longissimus capitis superior attachment
posteior margin of the mastoid process of the temporal bone
spinalis thoracis inferior attachment
common tendon
spinalis thoracic superioir attachment
spinous processes of T1-6
spinalis cervicis inferior attachments
ligamentum nuchae & spinous process of C7-T1
spinalis cervicis superior attachments
spinous process of C2
spinalis capitis attachment
blends with semispinalis capitis
innervation to the erector spinae
dorsal rami of adjacent spinal nerves C3-L5
transversospinal group of muscles
multifidi
rotatores
semispinalis
multifidi (lumbar) inferior attachment
mammillry process of lumbar vertebrae, lumbosacral ligaments, deep part of the common tendon of the erector spinae, posterior surface of the sarcum, posterior-superior iliac spine of the pelvis, & the capsule of the lumbar & lumbosacral apophyseal joints
multifidi (thoracic) inferior attachment
transverse processes of T1-12
multifdi (cervical) inferior attachment
articular processes of C3-7
multifidi superior attachment
spinous processes of vertebrae located 2-4 intervertebral segmetns superior
multifidi innervation
dorsal rami of adjacent spinal nerves C4-L4
rotatores, longus & brevis inferior attachment
transverse processes of all vertebrae
rotatores, longus & brevis superior attachment
spinous processes of vertebrae located 1 to 2 intervertebral segments superior
important note about rotatatores longus & brevis
the rotator longus crosses two intervertebral junctions; the more horizontal rotator brevis crosses only one intervertebral junction
rotatores: longus & brevis innervation
dorsal rami of adjacent spinal nerves C4-L4
semispinalis thoracis inferior attachments
transverse processes of T6-10
semispinalis thoracic superior attachments
spinous processes of C6-T4
semispinalis cervicis inferior attachments
transverse processes of T1-6
semispinalis cervicis superior attachment
spinous processes of C2-5, primarily C2
semispinalis capitis inferior attachment
transverse processes of C7-T7 and articular processes of C4-6
semispinalis capitis superior attachment
between the superior & inferior nuchal lines of the occipital bone
semispinalis innervation
dorsal rami of adjacent spinal nerves C1-T6
short segmental group of muscles
interspinalis
intertransversarus
interspinalis muscles innervation
dorsal rami of adjacent spinal nerves C3-L5
obliquus externus abdominis lateral attachment
lateral side of ribs 4 to 12
obliquus externus abdominis medial attachment
anterior half of the outer lip of the iliac crest, linea alba, & contralateral rectus sheaths
obliquus externus abdominis innervation
intercostal nerves T8-T12, iliohypogastric L1, & ilioinguinal L1 nerves
obliquus internus abdominis lateral attachments
anterior 2/3 of the middle lip of the iliac crest, inguinal igametns, & thoracolumbar fascia
obliquus internus abdominis medial attachments
ribs 9 to 12, linea alba, & contralateral rectus sheaths
obliquus internus abdominis innervation
intercostal T8-12, iliohyogastric L1, and ilioinguinal L1 nerves
rectus abdominis superior attachment
xiphoid process & cartilages of ribs 5 to 7
rectus abdominis inferioir attachment
crest of pubis & adjacent ligaments supporting the pubic symphysis joint
rectus abdominis innervation
intercostal nerves T7-T12
transverse abdominis lateral attachments
anterior 2/3 of the inner lip of the iliac crest, thoracolumbar fascia, inner surface of teh cartilages of ribs 6 to 12, & inguinal ligament
transverse abdominis medial attachments
linea alba & contralateral rectus sheaths
transverse adbominis innervation
intercostal T7-T12, iliohypogastric L1, & ilioinguinal L1 nerves
longus capitis inferior attachments
anterior tubercles of transverse processes of C3-6
longus capitis superior attachments
inferior surface of the basilar part of the occipital bone, immediately anterior to the attachment of the rectus capitis anterior