Scapula Flashcards
Scapula is the ________ bone of the shoulder girdle and goes from the __ to __ rib
posterior,
2nd to 7th rib
scapula: type of bone
flat
anterior surface of scapula is also called
ventral or costal surface
anterior surface of scapula VS posterior surface of scapula is directed
anterior - forward and medially due to oblique plane of scapula
posterior - backwards and laterally
concavity & what does it form
anterior surface VS posterior surface
anterior - slightly concave to form subscapular fossa
posterior - slightly convex
posterior surface is also called
dorsal surface
posterior surface is divided by the ______ to form
spine of the scapula
- small upper area - supraspinous fossa
- large lower area - infraspinous fossa
lateral border vs medial border vs superior border
thickness
length
shape
lateral - thick & oblique
medial - thin & longest & vertical
superior - thin & shortest
on the superior border, there is near its lateral end a
supra-scapular notch and coracoid process
inferior angle vs superior angle
type of angle and location
inferior - acute angle and lies over 7th rib
superior - right angle and lies over 2nd rib
lateral angle is regarded as
head of scapula
free surface of lateral angle has
glenoid cavity for articulation of humerus
glenoid cavity features
pear shaped & shallow
smooth and covered by hyaline articular cartilage
directed laterally and slightly upwards
above glenoid cavity, there is _______
below, there is ______
supra glenoid tubercle (above)
infra glenoid tubercle (below)
surfaces and borders of spine of scapula
two surfaces : upper & lower
two borders : posterial and lateral
the posterier border of the spine of the scapula is called
the crest of the spine and is felt subcutaneously
features of the crest of the spine of the scapula
has upper and lower margins (lips)
has surface in between which shows root of spine (rough near its medial end)
at lateral end, crest bends and turns upwards to form acromion process
the lateral border of the spine of the scapula is bound to
spino-glenoid notch
acromion process carries
oval facet to articulate with lateral end of clavicle at acromio clavicular joint
the lateral border of the acromion process is continuous with the spine at the
acromial angle
what makes up the acromion process
medial border, tip, lateral border
coracoid process arises from
superior border of scapula and is lateral to supra scapular notch
