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25 Cards in this Set

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elements of pectoral girdle
clavicles and scapulae
clavicles
collarbones; slender, slightly curved bones that extend horizontally across the superior thorax
functions of clavicles
provide attachment for muscles
act as braces
transmit compression forces from upper limbs to axial skeleton
scapulae
thin, triangular flat bones lying on the dorsal surface of the rib cage

also known as shoulder blades
borders of the scapula
superior border - shortest and sharpest
medial border, also known as vertebral border - parallels vertebral column
lateral border, also known as axillary border - abuts the axilla and ends in the glenoid cavity
glenoid cavity
shallow fossa on the scapula, articulating with the humerus to form the shoulder joint
angles of the scapula
lateral angle - where the glenoid cavity lies
superior angle - where the superior and medial borders meet
inferior angle - where the medial and lateral borders meet; moves as arm is raised and lowered
surfaces of the scapula
anterior surface is slightly concave and relatively featureless
posterior surface bears a prominent spine which ends laterally in the acromion
acromion
flat, triangular projection at the lateral end of the scapula's spine
coracoid proces
process projecting anteriorly from the lateral part of the superior scapular border; attachment point for biceps muscle; bound to the clavicle by ligaments
suprascapular notch
nerve passageway just medial to the coracoid process
infraspinous fossa
fossa lying just inferior to the spine of the scapula
supraspinous fossa
fossa lying just superior to the spine of the scapula
subscapular fossa
shallow concavity formed by the entire anterior surface of the scapula
arm
anatomically speaking, only the area between the shoulder and elbow
humerus
only bone of the arm; articulates with the scapula at the shoulder and with the radius and ulna at the elbow
head of the humerus
at the proximal end of the humerus; fits into the glenoid cavity of the scapula
anatomical neck of the humerus
slight constriction just inferior to the head
greater tubercle
lateral to the lesser tubercle
lesser tuburcle
medial to the greater tubercle
intertuburcular groove
separates the humerus' tuburcles

also called bicipital groove
bicipital groove
separates the humerus' tuburcles

also called intertuburcular groove
surgical neck of the humerus
area just inferior to the humurus' tubercles
deltoid tuberosity
tuberosity midway down the shaft of the humerus on the lateral side; attachment site for the deltoid muscle
radial groove
groove descending obliquely along the posterior surface of the humerus' shaft