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Back layer1,2 & 3
Muscles of the back, layer 1,2 & 3
Question | Answer |
---|---|
Trapezius muscle OIIA? | O: EOP, middle 1/3 of Superior Nuchal line, nuchal ligament and SP of C7-T12 I: lateral 1/3 of clavicle, spine of scapula, acromion process I: Spinal accessory n. (CN XI) (motor) and ventral rami (C3-C4) (sensory) A: Scapular D, E, R, Ips lat flex |
Latissimus Dorsi OIIA? | O: Thoracolumbar facia, SP T6-L5, illiac crest, sacram, ribs 8-12 I: Floor of intertubercular groove of humerus I: Thoracal N. C6-C8 A: Shoulder Internal rotation, Extension, adduction |
Rhomboid Major muscle OIIA? | O: SP T2-T5 I: Medial border of the scapula, below the spinous process I: Dorsal subscapular N. C5 A: Scapular retraction, elevation, downward scapular rotation, Scap stabilization |
Rhomboid Minor OIIA | O: SP C7-T1 I: Medial border of the scapula at the spinous process I: Dorsal Subscapular N. C5 A: Retraction, elevation, downward rotation, stabilization |
Trapezius and latissimus dorsi muscles are what layer? | Layer 1 |
Rhomboid major and minor, and levator scapulae muscles are all what layer muscles? | Layer 2 |
Levator scapulae OIIA | O: TP C1-C4 I: Superior angle of the scapula and medial border of the scapula above the spine I: Dorsal Subscapular N. C5 and dorsal ventral rami A: Scapular elevation, downward rotation Ipsilateral lateral flexion |
Serratus posterior superior OIIA | O: Ligamentum nuchae and SP C7-T3 I: Superior borders of ribs 2-5 I: 1-4 intercostal nn. (ventral rami T1-T4) A: Elevation of the ribs 2-5 |
Serratus posterior inferior OIIA | O: SP T11-L3 I: Inferior borders of ribs 9-12 I: Intercostal nn. 9-12 (ventral rami T9-T12) A: Depression of ribs 8-12 |
What layer are the serratus posterior inferior and superior muscles? | Layer 3 |
Are the muscles in these cards, layers 1-3 extrinsic or intrinsic? | Extrinsic |
Whats an extrinsic muscle? | Activates the limbs |