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Spinal Ana. Muscles
New muscles-Spinal
| Question | Answer |
|---|---|
| Trapezius O | superior nuchal line, external occipital protuberance, ligamentum nuchae, spinous processes and supraspinous ligament of c7-t12 |
| Trapezius I | Spine of scapula, acromion, distal third of clavicle |
| Trapezius A | Elevates, retracts, depresses scapula, rotates lateral angle of scapula superiorly |
| Trapezius N | Spinal Accessory (XI) |
| Latissimus Dorsi Muscle O | Sp & supraspinous ligament of T6-L5 thorac lumbar fascia, median sacral crest, liac crests, lower four ribs |
| Latissimus Dorsi Muscle I | Intertubercular groove of the humerus (btw insertion of pec maj. & teres major) |
| Latissimus Dorsi Muscle A | Adduction, internal rotation, and extension of the humerus |
| Latissimus Dorsi Muscle N | Thoracodorsal |
| Rhomboid Major O | SP T2-5 & supraspinous ligament |
| Rhomboid Major I | Medial border of scapula inferior to root of scapular spine |
| Rhomboid Major A | Retract scapula, rotate point of shoulder down, depresses glenoid fossa |
| Rhomboid Major N | Dorsal scapular |
| Levator Scapulae O | TP C1-4 |
| Levator I | Medial border of scapula above root of scapular spine |
| Levator A | If neck stabilized, elevate scapula, rotate point of shoulder down If scapula stabilized bilaterally - extend neck; unlaterally - lateral flex and rotate neck to same side |
| Levator N | Dorsal scapular |
| Serratus posterior superior O | C7-T3 SP & supraspinous ligament |
| Serratus posterior superior I | Posterior & superior aspect of 2-5 ribs |
| Serratus posterior superior A | Aids respiration, raises 2-5th ribs |
| Serratus posterior superior N | Ventral rami |
| Serratus posterior inferior O | SP & supraspinous ligament of T 11-L2 |
| Serratus posterior inferior I | Posterior & inferior surfaces of lower four ribs 9-12 |
| Serratus posterior inferior A | Aids respiration, lowers 9th through 12th ribs |
| Serratus posterior inferior N | Ventral rami |
| Splenius Capitis O | lower part of ligamentum nuchae & SP of C7-T3 |
| Splenius Capitis I | mastoid process, temporal one, occiput lateral part of superior nuchal line |
| Splenius Capitis A | Bilaterally: extend head Unilaterally: lateral flex and rotate face to same side |
| Splenius Capitis N | dorsal rami |
| Splenius Cervicis O | SP T3-6 |
| Splenius Cervicis I | TP of C1-3 |
| Splenius Cervicis A | Bilaterally: extend neck Unilaterally: lateral flex & rotate face toward same side |
| Splenius Cervicis N | dorsal primary rami |
| What makes up layer 5? | Illiocostalis (3), Longissimus (3), Capitis (3) |
| What are the 3 Illiocostalis muscles? O & I ? | Lumborum, thoracis (illium to ribs) cervicis (ribs to tp) |
| Illiocostalis N & A | dorsal primary rami, extend & laterally flex spine |
| What are the 3 Longissimus muscles? O & I? | thoracis, cervicis (tp to tp), capitis (tp to mastoid process) |
| Longissimus N & A? | dorsal primary rami, extend & laterally flex |
| What are the 3 muscles of the spinalis? O & I ? | thoracis, cervicis(sp to sp), capitis (sp to EOP) |
| Spinalis N & A? | dorsal primary rami, extend |
| What layer is the Transverso Spinalis muscle group? | layer 6 |
| What makes up layer 6? O & I? | multifidus (mamillary process to SP), rotators(Tp - 1 or 2 segment SP), semispinalis (TP to SP) |
| What is multifidus & rotators used for? | properception |
| What is the levator costorum, longus and brevis action? N? O & I? | respiration, ventral primary rami, ribs to tp |
| What are the muscles that make us the subocciptal triangle? | Obliquus capitis superior, Obliquus capitis inferior, Rectus capitis posterior major |
| What are the contents found in the suboccipital triangle? | vertebral artery, suboccipital nerve, C1 nerve & greater occipital nerve |
| What separates the spinalis capitas from the semispinalis capitis? | greater occipital nerve |
| Where does greater occipital nerve come from? sensory or motor? | C2 sensory |
| Is C1 nerve sensory or motor? | motor |
| Deltoid O & I? A | lateral third of clavicle & acromion and spine of scapula humerus -flexes, medially rotates, abducts, laterally rotates, extends arm |
| Supraspinatus O & I? A | supraspinous fossa of scapula & superior facet of greater tubercle of humerus -helps deltoid abduct arm |
| Infraspinatus O & I? A | infraspinous fossa of scapula & middle facet of greater tubercle of humerus -laterally rotates arm & acts with rotator cuff muscles |
| Teres minor O & I ? A | middle part of lateral border of scapula & inferior facet of greater tubercle - laterally rotates |
| Teres major O & I ? A | posterior surface of inferior angle of scapula & medial lip pf intertubercular sulcus of humerus - adducts, medially rotates arm |
| Subscapularis O & I? A | subscapular fossa & lesser tubercle of humerus - medially rotates arm holds head off glenoid cavity |
| Pectoralis Major 0 & I? A | clavicular head, anterior surface of medial half of clavicle, sternocostal head, anterior surface of sternum, superior 6 costal cartilage & lateral lip of intertubercular sulcus of humerus - adducts & medially rotates humerus |
| Pectoralis Minor O & I? A | 3-5 ribs & medial border of superior surface of coracoid process of scapula - stabilizes scapula by drawling it inferiorly & anteriorly against thoracic wall |
| Rhomboid Minor O | SP C7-T1 & supraspinous ligament |
| Rhomboid Minor I | medial border of scapula @ level of root of scapular spine |
| Rhomboid Minor A | retract scapula, rotate point of shoulder and depress glenoid fossa |
| Rhomboid Minor N | dorsal scapular |
| What are the erector spinae muscle groups? what layer? | Layer 5- Illocostalis, longissimus, spinalis |
| Action of Semispinalis | Bi: extend head Uni: slight rotation head/face to opposite side |
| Action of Multifidus | Bi: extend spine Uni: extend, laterally flex, and rotate vertebral bodies to opposite side |
| Action Rotatores | Bi: extend spine Uni: rotate vertebral bodies to opposite sides |
Created by:
atruelove
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