Shoulder Region

glenohumeral joint

acromioclavicular joint

the joint where the acromion and the clavicle meet

supraglenoid tubercle

prominence superior to the glenoid cavity

infraglenoid tubercle

prominence inferior to the glenoid cavity

scapular notch

depression in superior border of scapula

acromion

Outward extension of the shoulder blade forming the point of the shoulder.

coracoid process

process above the glenoid cavity that permits muscle attachment

protraction of scapula

abduction; moving away from the vertebrae

retraction of scapula

adduction; moving toward the vertebrae

superior rotation of scapula

genoid cavity pointing skyward

downward rotation of scapula

glenoid cavity of the scapula facing down

thoracoappendicular muscles

subclavius, pectoralis major, pectoralis minor, serratus anterior

rotator cuff muscles

supraspinatus, infraspinatus, teres minor, subscapularis

deltoid origin

lateral clavicle, spine of scapula, acromion

deltoid insertion

deltoid tuberosity of humerus

deltoid nerve

axillary

deltoid function

abduction, flexion, and extension of arm

teres major origin

inferior angle of scapula

teres major insertion

medial bicipital groove of humerus

teres major nerve

lower subscapular

teres major function

adducts and medially rotates arm

supraspinatus origin

supraspinous fossa of scapula

supraspinatus insertion

superior part of greater tubercle of humerus

suprasinatus nerve

suprascapular

supraspinatus function

assists deltoid in abducting arm

infraspinatus origin

infraspinous fossa of scpula

infraspinous insertion

medial facet of greater tubercle of humerus

infaspinatus function

laterally rotates humerus

teres minor origin

posterolateral border of scapula

teres minor insertion

lower part of greater tubercle

teres minor function

adducts and laterally rotates humerus

subscapularis origin

subscapular fossa

subscpularis insertion

lesser tubercle of humerus; capsule of shoulder joint

subscapularis nerve

upper and lower subscapular

subscapularis function

medially rotates humerus

quadrangular space borders

teres major, teres minor, long head of triceps, lateral head of triceps

quadrangular space

transmits axillary nerve and posterior humeral circumflex artery

triangular space borders

long head of triceps, teres major, teres minor

triangular space

circumflex scapular artery

triangular interval borders

long head of triceps, lateral head of triceps, teres major

triangular interval

contains radial nerve and deep branch of brachial artery