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35 Cards in this Set

  • Front
  • Back
Trapezius muscle I, O, and action
O: superior nuchal line (ext. occipital protuberance), nuchal ligament, spinous processes of C7-T12,
I: acromion and spine of scapula, lateral 1/3 of clavicle
action: elevates, depresses, and retracts (adducts)scapula, medially rotates scapula (also shrugging)
Trapezius muscle N and A
N: CN XI (spinal accessory)
A: transverse cervical artery
Latissimus dorsi I, O, and action
O: spines of T7-T12, thoracolumbar fascia, iliac crest, inferior 3-4 ribs
I: intertubercular sulcus of humerus (crest of lesser tubercle)
action: adduction, medial rotation, extension of arm
Latissimus dorsi N and A
N: thoracodorsal
A: thoracodorsal
Rhomboid minor I, O, and action
O: nuchal ligament and spinous processes of C7 and T1
I: medial border of scapula near spine
action: adduct, rotate laterally, hold close to thoracic wall
Rhomboid minor N and A
N: dorsal scapular
A: dorsal scapular
Rhomboid major O, I, action
O: spines of T2-T5
I: medial border of scapula inferior to spine
action: adduct, laterally rotate scapula, hold close to thoracic wall
Rhomboid major N and A
N: dorsal scapular
A: dorsal scapular
What muscles does the DORSAL SCAPULAR nerve innervate:
Rhomboids and levator scapulae
Levator scapulae O, I, action
O: transverse processes of upper 4 cervical vertebra
I: superior angle of scapula
action: elevates and laterally rotates scapula (to depress glenoid cavity)
Levator scapulae N and A
N: dorsal scapular
A: dorsal scapular
Serratus posterior superior O, I, action
O: nuchal ligament and spinous processes of C7-T3
I: superior borders of ribs 2-5, lateral to their angles
action: respiration
Serratus posterior superior N and A
N: intercostal
Serratus posterior inferior O, I, action
O: spinous processes of T11-L2
I: inferior borders of ribs 8-12, lateral to angles
action: respiration
Serratus posterior inferior N and A
N: intercostal
What are the borders of the triangle of Petit?
lat dorsi, iliac crest, external abdominal oblique
What are the borders of the triangle of auscultation?
trapezius, lat dorsi, scapula or rhomboids
Splenius O, I, action
O: nuchal ligament and spinous processes of C7-T6
I: (capitis)mastoid process of temporal bone and superior nuchal line; (cervicis) transverse processes of C1-C4
action: lateral flexion and rotate neck; with both parts acting, extension of neck
Splenius N and A
N: posterior rami of spinal nerves
A:
semispinalis capitis O, I, action
O: transverse processes C4-T12
I: below superior nuchal line and spinous processes, spanning 4-6 segments
action: extends head/neck, rotates contralaterally
semispinalis capitis N and A
N: dorsal rami of spinal nerves (great occipital nerve?)
Erector spinae O, I, action
O: iliac crest, sacrum, iliosacral ligaments, L/S spinous processes, supraspinous ligament
I: IC to rib angles and cervical transverse processes, L to C/T transverse processes and mastoid process, S to spinous processes of upper thoracic region and to cranium
action: extension, lateral flexion
Erector spinae N and A
N: dorsal rami of spinal nerves
A: posterior intercostal artery (branches off descending aorta)
Muscles of the erector spinae
Spinalis(thoracis, cervicis, capitis), Longissimus(thor, cerv, cap), iliocostalis(lumborum, thoracis, cervicis)
Transversospinal group of muscles - list 3
semispinalis, multifidus, rotatores(cervicis and thoracis)
Rotatores O, I, action
O: transverse processes
I: spinous processes immediately (brevis) or 2 segments superior(longus)
action: local extension and rotatory movements of vert column
Multifidus O, I
O: posterior sacrum, posterior iliac spine, mamillary processes of lumbar vertebrae, transverse processes/articular proc of C4-C7
I: superomedially by 2-4 segments to spinous processes
LEvatores costarum O, I, action, N
O: transverse processes C7-T11
I: rib between tubercle and angle (lower 4 have long and short parts)
action: elevate ribs, lateral flexion, respiration
N: dorsal rami of spinal nerves
Muscles of suboccipital triangle
Obliquus capitis inferior, obliquus capitis superior, rectus capitis major
Deltoid O, I, action
O: spine of scapula, lateral 1/3 of clavicle, acromion
I: deltoid tuberosity of humerus
action: extension of shoulder joint, lateral and medial rotation, flexion, abduct arm
deltoid N and A
N: axillary
A: posterior circumflex humeral artery
Teres minor O, I, action
O: lateral border of scapula
I: inferior facet of greater tubercle of humerus
action: lateral/external rotation
Teres minor N and A
N: axillary
A: circumflex scapular artery
What are the main lateral (external) rotators?
infraspinatus and teres minor
What arteries run on the medial border and lateral border of the scapula, respectively?
Dorsal scapular artery and circumflex scapular artery