1 / 16

TRAPEZIUS

TRAPEZIUS. IV. COMMITTEE LAB-2. muscle's origin : base of triangle situated along vertebral column muscle's insertion : apex pointing toward tip of shoulder. Occipital bone. Scapula. Vertebral column. TRAPEZIUS. IV. COMMITTEE LAB-2. Superior and inferior fibers work together

kaiya
Download Presentation

TRAPEZIUS

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. TRAPEZIUS IV. COMMITTEE LAB-2 muscle'sorigin: base of triangle situated along vertebral column muscle'sinsertion: apexpointingtoward tip of shoulder Occipital bone Scapula Vertebralcolumn

  2. TRAPEZIUS IV. COMMITTEE LAB-2 Superiorandinferiorfibersworktogether torotatethelateralaspect of thescapulaupward, whichneedstooccurwhenraisingtheupperlimbabovethehead.

  3. TRAPEZIUS IV. COMMITTEE LAB-2 Thetrapeziusalsobracestheshouldersbypullingthescapulaeposteriorlyandsuperiorly, fixingthem in position on thethoracicwallwithtoniccontraction; consequently, weakness of thismusclecausesdrooping of theshoulders.

  4. TRAPEZIUS IV. COMMITTEE LAB-2 Motor innervation of trapeziusaccessorynerve [XI] descendsfromtheneckontothedeepsurface of themuscle. Proprioceptivefibersfromtrapeziuspass in thebranches of thecervicalplexusandenterthespinalcord at spinalcordlevels C3 &C4.

  5. IV. COMMITTEE LAB-2 LATTISIUMUS DORSI • Spinous processes of T7 to L5 • Sacrum • Iliac crest • Ribs 10 to 12 Floor of intertubercular sulcus of humerus

  6. IV. COMMITTEE LAB-2 LATTISIUMUS DORSI • Extend • Adducthumerus (arm,upperlimb) • Mediallyrotate Apley scratch test. can alsodepresstheshoulder, preventingitsupwardmovement

  7. IV. COMMITTEE LAB-2 LATTISIUMUS DORSI Incombinationwithpectoralismajor powerfuladductor of thehumerus playsa major role in downwardrotation of thescapula in associationwiththismovement.

  8. IV. COMMITTEE LAB-2 LATTISIUMUS DORSI Innervation: thoracodorsalnerve

  9. Levatorscapulae Upper portion medial border of scapulasuperiortoroot of spine of scapula

  10. Levatorscapulae actswiththedescendingpart of thetrapeziustoelevatethescapula, orfixit! resistsforcesthatwoulddepress it, as whencarrying a load.

  11. RHOMBOID MINOR Lower portion of ligamentumnuchae Spinous processes of C7 and T1 Medial border of scapula at the spine of scapula

  12. IV. COMMITTEE LAB-2 RHOMBOID major Spinous processes of T3 to T5 Medial border of scapula between spine &inferior angle

  13. RHOMBOID major et mInor IV. COMMITTEE LAB-2 Retract (adduct) and elevate scapula Assistserratusanteriorin holding thescapulaagainstthethoracicwallandfixingthescapuladuringmovements of theupperlimb.

  14. Innervation:dorsal scapular nervebranch of brachial plexus C4 & C5 IV. COMMITTEE LAB-2

  15. SerratusposterIor SUPERIOR SERRATUS POSTERIOR INFERIOR IV. COMMITTEE LAB-2 attachedtothevertebralcolumnandassociatedstructuresmedially Eitherdescend (fibers of serratusposteriorsuperior) orAscend (fibers of serratusposteriorinferior) toattachtotheribs. Thesetwomusclesthereforeelevateanddepresstheribs .

  16. SerratusposterIor SUPERIOR SERRATUS POSTERIOR INFERIOR IV. COMMITTEE LAB-2 firstfourintercostalspinelnerves . lastfourintercostalspinelnerves

More Related