Back Muscles Flashcards
1
Q
Rhomboid Major
A
O= Spinous processes of T2-5 I= Medial border of scapula inf to spine A= Retract scapula medially and superiorly In= Dorsal Scapular
2
Q
Rhomboid Minor
A
O= Nuchal ligs+ spinous processes of C7-T1 I= Medial border of scapula at level of spine A= Retract scapula medially and superiorly In= Dorsal Scapular
3
Q
Levator Scapulae
A
O= Transverse processes of C1-4 I= Sup part of medial border of scapula (above root of spine) A= Lift scapula and rotate medially (down) In= C3-4 cervical nerves and C5 (dorsal scapular)
4
Q
Latissimus Dorsi
A
O= Spinous processes of T7-L5, thoracolumbar fascia, iliac crest, inf 3/4 ribs, inf angle of scapula I= Intertubercular groove A= Adduction, extension and medial rotation of arm and rotator of trunk In= Thoracodorsal nerve
5
Q
Trapezius
A
O= External Occipital Protuberance, sup nuchal line, lig nuchae, spinal processes of C7-T12 I= Lateral 1/3rd clavicle, acromion process, spine of scapula A= elevate, retract, depress and rotate scapula In= Accessory Nerve
6
Q
Serratus Posterior Superior
A
O= Lig nuchae+ supraspinous lig I= Ribs 2-5 A= Elevate ribs 2-5 In= T2-5
7
Q
Serratus Posterior Inferior
A
O= T11-L3+ supraspinous lig I= Ribs 9-12 A= Depress ribs 9-12 In= T9-12
8
Q
Extrinsic Back Muscles
A
Supplied by ventral rami
Superficial= Rhomboids, trapezius, elevator scapulae, latissimus dorsi
Intermediate= Serratus posteriors
9
Q
Intrinsic Back Muscles
A
Supplied by dorsal rami
Superficial= Splenius capitus and cervicis
Intermediate= Spinalis, longissimus, iliocostalis
Deep= Semispinalis, multifidis rotares
10
Q
Splenius Capitus
A
O= Lower 1/12 lig nuchae, C7-T4 I= Mastoid, skull below last 1/3rd sup nuchal line A= Extend head and neck, turn face to ipsilateral side
11
Q
Splenius Cervicis
A
O= Spinous processes of T3-6 I= Transverse processes of C1-3 A= Extend neck and turn face to ipsilateral side
12
Q
Erector Spinae Muscles
A
Spinalis, longissimus, iliocostalis
Med to lat
13
Q
Deep Intrinsic Back Muscles
A
Semispinalis and Mulifidis rotares
From transverse processes to higher spinous processes
