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35 Cards in this Set
- Front
- Back
Trapezius muscle I, O, and action
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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) |
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Trapezius muscle N and A
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N: CN XI (spinal accessory)
A: transverse cervical artery |
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Latissimus dorsi I, O, and action
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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 |
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Latissimus dorsi N and A
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N: thoracodorsal
A: thoracodorsal |
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Rhomboid minor I, O, and action
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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 |
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Rhomboid minor N and A
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N: dorsal scapular
A: dorsal scapular |
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Rhomboid major O, I, action
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O: spines of T2-T5
I: medial border of scapula inferior to spine action: adduct, laterally rotate scapula, hold close to thoracic wall |
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Rhomboid major N and A
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N: dorsal scapular
A: dorsal scapular |
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What muscles does the DORSAL SCAPULAR nerve innervate:
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Rhomboids and levator scapulae
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Levator scapulae O, I, action
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O: transverse processes of upper 4 cervical vertebra
I: superior angle of scapula action: elevates and laterally rotates scapula (to depress glenoid cavity) |
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Levator scapulae N and A
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N: dorsal scapular
A: dorsal scapular |
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Serratus posterior superior O, I, action
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O: nuchal ligament and spinous processes of C7-T3
I: superior borders of ribs 2-5, lateral to their angles action: respiration |
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Serratus posterior superior N and A
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N: intercostal
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Serratus posterior inferior O, I, action
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O: spinous processes of T11-L2
I: inferior borders of ribs 8-12, lateral to angles action: respiration |
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Serratus posterior inferior N and A
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N: intercostal
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What are the borders of the triangle of Petit?
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lat dorsi, iliac crest, external abdominal oblique
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What are the borders of the triangle of auscultation?
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trapezius, lat dorsi, scapula or rhomboids
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Splenius O, I, action
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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 |
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Splenius N and A
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N: posterior rami of spinal nerves
A: |
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semispinalis capitis O, I, action
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O: transverse processes C4-T12
I: below superior nuchal line and spinous processes, spanning 4-6 segments action: extends head/neck, rotates contralaterally |
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semispinalis capitis N and A
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N: dorsal rami of spinal nerves (great occipital nerve?)
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Erector spinae O, I, action
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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 |
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Erector spinae N and A
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N: dorsal rami of spinal nerves
A: posterior intercostal artery (branches off descending aorta) |
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Muscles of the erector spinae
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Spinalis(thoracis, cervicis, capitis), Longissimus(thor, cerv, cap), iliocostalis(lumborum, thoracis, cervicis)
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Transversospinal group of muscles - list 3
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semispinalis, multifidus, rotatores(cervicis and thoracis)
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Rotatores O, I, action
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O: transverse processes
I: spinous processes immediately (brevis) or 2 segments superior(longus) action: local extension and rotatory movements of vert column |
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Multifidus O, I
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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 |
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LEvatores costarum O, I, action, N
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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 |
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Muscles of suboccipital triangle
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Obliquus capitis inferior, obliquus capitis superior, rectus capitis major
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Deltoid O, I, action
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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 |
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deltoid N and A
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N: axillary
A: posterior circumflex humeral artery |
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Teres minor O, I, action
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O: lateral border of scapula
I: inferior facet of greater tubercle of humerus action: lateral/external rotation |
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Teres minor N and A
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N: axillary
A: circumflex scapular artery |
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What are the main lateral (external) rotators?
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infraspinatus and teres minor
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What arteries run on the medial border and lateral border of the scapula, respectively?
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Dorsal scapular artery and circumflex scapular artery
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