BONES OF THE UPPER LIMB - The pectoral girdle and bones of...

This preview shows page 1 - 11 out of 35 pages.

The pectoral girdle and bones of the free part of thesuperior appendicular skeleton form bones of the upperlimbThe pectoral girdle is joined to the manubrium of thesternum at the sternoclavicular jointThe pectoral girdle is extremely mobileIts supported and stabilized by muscles attached to theribs sternum and vertebrae
CLAVICLEAKA COLLAR BONEDouble curved long boneConnects upper limb to trunkHas two ends;SternalEnd [medial] ;Its enlarged and triangular where it articulates with themanubrium of the sternum at the sternoclavicular joint
Acromial[lateral];Its flat, articulates with the scapula at theacromoclavicular jointThe shaft;Has medial 2/3rdand lateral 1/3rdThe medial 2/3rdis convex anteriorlyThe lateral 1/3rdis flattened and concave anteriorly
surfacesHassuperior and inferiorsurfaces.Superior surface is smoothand has a prominence forinsertion of muscles.The inferior surface is roughbecause strong ligamentsbind it to the 1strib at thesternal end and suspend thescapular from the acromialendNear the acromial end is theconoid tubercle which giveattachment to the conoidligament
In the medial 2/3rdis the subclaivian groove for theattachment of the subclaivus muscle. Most medially hereis the impression for the costoclavicular ligament.

Upload your study docs or become a

Course Hero member to access this document

Upload your study docs or become a

Course Hero member to access this document

End of preview. Want to read all 35 pages?

Upload your study docs or become a

Course Hero member to access this document

Term
Fall
Professor
ProfS
Tags
Anatomy, glenoid cavity, scapular fracture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture