Midterm Module Flashcards
Origin of the Trapezius
Medial 1/3 of superior nuchal line; EOP; nuchal ligament; SPs of C7-T12
Insertion of the Trapezius
Lateral 1/3 of clavicle; acromion; spine of scapula
Innervation of the Trapezius
Motor: spinal accessory nerve (CN XI);
Pain and proprioception: C3 and C4 spinal nerves
Action of the Trapezius
Descending part: elevates scapula
Middle part: retracts scapula
Ascending part: depresses scapula
Blood supply of the Trapezius
superficial branch of the transverse cervical a., Dorsal Scapular
Origin of the Latissimus Dorsi
SPs of T7-T12; thoracolumbar fascia; iliac crest; inferior 3 or 4 ribs; inferior angle of scapula
Insertion of the Latissimus Dorsi
Floor of intertubercular groove of humerus
Innervation of the Latissimus Dorsi
Thoracodorsal nerve (C6, *C7, C8)
Action of the Latissimus Dorsi
Extends, adducts and medially rotates the humerus
Blood supply of the Latissimus Dorsi
Thoracodorsal Artery
Origin of the Rhomboid Major
SPs T2-T5
Insertion of the Rhomboid Major
Medial border of scapula (spine to inferior angle)
Innervation of the Rhomboid Major
Dorsal scapular nerve (C4, *C5)
Action of the Rhomboid Major
Retracts scapula; rotates glenoid cavity inferiorly; fix scapular to thoracic wall
Blood supply of the Rhomboid Major
Dorsal scapular artery
Origin of Rhomboid Minor
Nuchal ligament; SPs C7-T1
Insertion of Rhomboid Minor
Medial border of scapula (medial end of scapular spine
Innervation of Rhomboid Minor
Dorsal scapular nerve (C4, *C5)
Action of Rhomboid Minor
Retracts scapula; rotates glenoid cavity inferiorly; fix scapular to thoracic wall
Blood supply of Rhomboid Minor
Dorsal scapular artery
Origin of Levator Scapulae
Posterior tubercles of transverse processes C1-C4
Insertion of Levator Scapulae
Medial border of scapula (superior to root of scapular spine)
Innervation of Levator Scapulae
C3 and *C4 spinal nerves; *dorsal scapular nerve (C5) (some authors include C4)
Action of Levator Scapulae
Elevates scapula; rotates glenoid cavity inferiorly
Blood supply of Levator Scapulae
Transverse cervical and ascending cervical aa
Origin of Serratus posterior superior
Nuchal ligament?; SPs of C7-T2 or T3
Insertion of Serratus posterior superior
Superior border of external surfaces of ribs 2-5 (just lateral to their angles)
Innervation of Serratus posterior superior
2nd-5th intercostal nerves
Action of Serratus posterior superior
Elevates ribs/proprioception?
Blood supply of Serratus posterior superior
Posterior intercostal arteries
Origin of Serratus posterior inferior
SPs of T11-L2 or L3
Insertion of Serratus posterior inferior
Inferior border of external surfaces of ribs 9-12
Innervation of Serratus posterior inferior
Ventral rami T9-T12 spinal nerves
Action of Serratus posterior inferior
Depresses lower ribs/proprioception?
Blood supply of Serratus posterior inferior
Posterior intercostal aa.
Origin of Splenius Capitis
Inferior 1/2 of the ligamentum nuchae, SPs of c7, t1-t4
Insertion of Splenius Capitis
Mastoid Process
Innervation of Splenius Capitis
Dorsal rami
Action of Splenius Capitis
Unilateral- Rotates head ipsilaterally
Bilateral- Extension of head
Blood supply of Splenius Capitis
Superficial branch of the transverse cervical artery
Branches of the occipital artery
Origin of Splenius Cervicis
SPs T4-T6
Insertion of Splenius Cervicis
Posterior tubercles of TPs of C1, C2 and sometimes C3
Innervation of Splenius Cervicis
Dorsal Rami
Action of Splenius Cervicis
unilateral- lateral flexion and rotation of upper cervical vertebrae ipsilaterally
Bilateral- Extension of the C-Spine
Blood supply of Splenius Cervicis
Superficial branch of the transverse Cervical artery and branches of the occipital artery
Origin of Iliocostalis Cervicis
posterior tubercles of TPs C4-C6
Insertion of Iliocostalis Cervicis
angles of ribs 3-6
origin of Iliocostalis Thoracis
TP of C7, superior border of upper 6 ribs
Insertion of Iliocostalis Thoracis
superior border of angles of lower 6 ribs
origin of Iliocostalis Lumborum
Lumbar- tips of TPs of L1-L4 middle layer of TL fascia
Thoracic- Angles of lower 8/9 ribs
Insertion of Iliocostalis Lumborum
L- iliac crest
T- Iliac crest
Origin of Longissimus capitis
Mastoid process
Insertion of Longissimus capitis
TPs of lower 3/4 cervical and upper 4 T vertebrae
Origin of Longissimus Cervicis
TPs C2-C6
Insertion of Longissimus Cervicis
TPs upper 4-5 thoracic vertebrae
Origin of Longissimus Thoracis
Lumbar- accessory processes and TPs of L1-L5
Thoracic- tips of TPs of upper 4 Thoracic vertebrae, TPs and adjacent ribs of lower 8 thoracic vertebrae
Insertion of Longissimus Thoracis
Lumbar- intermuscular aponeurosis
Thoracic- SPs of lumbar vertebrae, median sacral crest, , posterior surface of sacrum, dorsal iliac crest
Origin of Spinalis Capitis
occasional fibers arise from semispinalis capitis muscle
Insertion of Spinalis Capitis
SPs of C7-T1
Origin of Spinalis Cervicis
SPs C2-C4
Insertion of Spinalis Cervicis
Ligamentum Nuchae
Origination of Spinalis Thoracis
SPs of upper thoracic vertebrae
Insertion of Spinalis Thoracis
SPs of T11-L2
Origin of Rotatores Brevis
Lamina of Vertebrae above
Insertion of Rotatores Brevis
TP of Vertebrae immediatley below
Origin of Rotatores Longus
Base of SP of Vertebrae above
Insertion of Rotatores Longus
TP of vertebra 2 levels below
Origin of Multifidus
SPs of vertebrae
Insertion of Multifidus
TPs of 2,3,4, and 5 levels below
Origin of Semispinalis Capitis
Between superior n inferior nuchal line of occiput
Insertion of Semispinalis Capitis
Superior articular process of lower 4 cervical vertebrae and TPs of upper 6 or 7 Thoracic vertebrae
Origin of Semispinalis Cervicis
SPs of 2nd to 5th cervical vertebrae
Insertion of Semispinalis Cervicis
TPs of upper 5 or 6 TPs of Thoracic Vertebrae
Origin of Semispinalis Thoracis
SPs of lower 2 cervical and upper 4 thoracic vertebrae
Insertion of Semispinalis Thoracis
TPs of 6th-10th Thoracic Vertebrae