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Back Layer 4, 5
Back layer 4, 5
| Question | Answer |
|---|---|
| Splenius capitis OIIA | O: Ligamentum nuchae, SP C7-T3 I: Lteral 1/3 superior nuchal line and mastoid process I:dorsal rami C1-T1 A: B/L Head ext., U/L ipsilateral lateral flexion and rotation |
| Splenius cervisis OIIA | O: SP T3-T6 I: TP C1-C3 I: dorsal rami lower C/S nerves A: B/L neck ext. U/L ipsilateral lateral flexion and rotation |
| Illiocostalis Lumborum OI | O: Common tendon of erector spinae, illiac crest I: INferior borders ribs 6-12 at rib angles |
| Illiocostalis thoricis OI | O: Superior borders of ribs 6-12 at angles I: ribs 1-6 at angles, TP C7 |
| Illiocostalis Cervisis OI | O: 3-6 ribs at angles I: Posterior tubricles of TP C4-C6 |
| Illiocostalis actions are? | B/L spinal ext, maintain post. U/L ipsilateral lateral flexion |
| Longissimus Thoracis OI | O: Common tendon of erector spinae, TP L1-L5, accessory process L1-L5 I: TP T1-T12, 3-12 ribs medial cartilage |
| Longissimus Cervicis OI | O: TP T1-T5 I: posterior tubricles TP C2-C6 |
| Longissimus capitis OI | O: TP T1-T5 I: Posterior margin mastoid process |
| Longissimus muscles action is? | B/L spinal ext (cervicis & thoricis) U/L lateral flextion. Capitis B/L extends the head, U/L ipsilateral rotation |
| All of the erector spinae muscles are layer? | Layer 5 |
| All of the muscles in layers 4 and 5 are? | Intrinsic muscles, move spine |
| Spinalis thoricis OI | O: SP T11-L2 I: SP T1-T4 |
| Spinais cervicis OI | O: Ligamentum nuchae, SP C7-T2 I: SP C2-C4 |
| Spinalis capitis OI | O: SP lower C/S and upper T/S I: Between inferior and superior nuchal lines |
| Spinalis actions are? | B/L spinal and head ext |
| Erector spinae muscles go in what order from lateral to medial? | Illiocostalis, Longissimus, Spinalis |
| Erector spinae muscles are all innervated by? | dorsal rami in area |