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Spinal Ana. Muscles

New muscles-Spinal

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