The Appendicular Skeletal System (Scapula and Clavicle)

Coracoid process

"bird head" The coracoid process (crow) is a small hook-like structure on the lateral edge of the superior anterior portion of the scapula. Pointing laterally forward, it, together with the acromion, serves to stabilize the shoulder joint. It

Sternal end (median end) facing sternum

-blocker and more curved in manual workers -superior surface is smooth -blunt with meanie (mediastinum) -1st ossifies through intramembranous ends ossify through endochondrial -right clavicle shorter and thicker

Scapula

-technical term for shoulder blade

Acromian process

The acromion or acromion process is the high-point located at the lateral (i.e. the furthest from the vertebral column) end of the spine of the scapula. The acromion articulates with the clavicle to form the acromioclavicular joint. (top of shoulder)

Supraglenoid tubercle

above gland cavity

Vertebral borders

always medial to vertebras

Infraspinous fossa (anterior)

larger dip, surface of anterior scapula, inferior to the supraspinous fossa

Supraspinous fossa

shallow dip superior to spine

Infraglenoid tubercle

superior border along top

Sternoclavicular joint

synovial gliding joint ball and socket anterior attachment to axial skeleton

Clavicle

the clavicle or collarbone is a long bone that serves as a strut between the shoulder blade and the breastbone

Right and Left differentiation of Scapula

-Acromian process lateral -Spine always posterior -Glenoid cavity always lateral -Subscapular fossa on rib cage -Vertebral border closer to vertebrae

Right and Left Differentiate

-Conoid tubercle points down and posteriorly -Acromial end is flat

Acromial end (lateral end)

Lateral end of the clavicle Flatter end

The Pectoral Girdle

Scapula and clavicle -attaches to the axial skeletal at the sternoclavicular joint The rest of the pectoral girdle is held lousy in place through stabilizing muscle

Subscapular fossa

The subscapular fossa (of the scapula) is a structural feature on the scapula bone (also known as the shoulder blade or shoulder bone).