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Anatomy SHOULDER GIRDLE
EXAM 1
47
Anatomy
Graduate
07/25/2016

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Term
intramembranous ossification
examples
Definition
direct ossification, embryonic flat bone formation.
e.g., skull, maxilla, mandible, pelvis, clavicle
Term
endochondral ossification
Definition
replacement of the cartilage model by bone, as in long bones
Term
WHAT ARE ELEMENTS OF SHOULDER GIRDLE & UPPER ARM?
Definition
CLAVICLE
SCAPULA
UPPER HUMERUS
AXILLA
Term
What does the clavicle do (broadly)
Definition
acts as a strut holding the upper extremity in place
Term
parts of the clavicle
Definition
lateral portion
medial portion
Term
lateral clavicle
Definition
-lateral to the coracoid process
-flattened horizontally
Term
coracoclavicular joint components
-medial, lateral
-type of joint
Definition
-CONOID LIGAMENT: medial
-TRAPEZOID LIGAMENT: lateral
-a syndesmosis
Term
medial calvicle
-components
-articulates with?
Definition
-typical long bone
-triangular on cross section
-articulates with sternum sternoclavicular joint
Term
between the medial clavicle and manubrium
Definition
articular disc
Term
calvicular ossification
Definition
--primary center of ossification in the middle
--secondary center of ossification is at the sternal end and epiphysis
Term
severity of clavicular fracture depends on...
Definition
integrity of the coracoclavicular ligaments
Term
important structures behind the clavicle in danger in event of fracture
Definition
-blood vessels
-brachial plexus
Term
medial connection of long head of the biceps
Definition
supraglenoid tubercle
Term
medial connection of long head of the triceps
Definition
infraglenoid tubercle
Term
inferior angle of the scapula, muscle insertions
Definition
Rhomboid major
teres major
serratus anterior
Term
superior angle of the scapula
insertions
Definition
levator scapulae
Term
suprascapular ligament
Definition
above the suprascapular notch
Term
muscles that attach to the coracoid process
Definition
short head of the biceps brachii
coracobrachialis
pectoralis minor
Term
teres major origin and insertion
Definition
origin - Posterior aspect of the inferior angle of the scapula

insertion - Medial lip of the inter-tubercular sulcus of the humerus
Term
teres major action
Definition
-adducts the humerus
-internally rotates the humerus
-extend the humerus from the flexed position
-protract shoulder
-shoulder depression
Term
teres major nerve
Definition
lower subscapular nerve
-segmental levels c5-6
Term
teres major blood supply
Definition
subscapular and circumflex scapular arteries
Term
muscles that attach to the medial border of the scapula
Definition
-levator scapulae
-rhomboid major
-rhomboid minor
Term
lateral border of the scapula
Definition
from the inferior angle to the infraglenoid tubercle
Term
muscle that attach to the lateral border of the scapula, from top to bottom
Definition
-long head of triceps
-teres minor
-teres major
Term
at the end of the spine of the scapula, underneath the acromion
Definition
spinoglenoid notch
Term
trapezius muscle insertions
Definition
spine of the scapula
acromion
lateral third of the clavicle
Term
trapezius origins
Definition
from superior nuchal line to spine of t12 vertebra
Term
insertion of the subscapularis muscle
Definition
lesser tubercle of the humerus
Term
muscles that attach to the crest of the lesser tubercle
Definition
teres major and latissimus dorsi
Term
muscles that attach to the greater tubercle of the humerus
Definition
-supraspinatus
-infraspinatus
-teres minor
Term
muscles that attach to the crest of the greater tubercle
Definition
pectoralis major
Term
what sits in the bicipital groove?
Definition
tendon of the long head of the biceps brachii
Term
what attaches to the anatomical neck of the humerus?
Definition
fibrous capsule
Term
Three important spaces of the shoulder that are bordered by the triceps include
Definition
Quadrangular Space
Triangular Space
Triangular Interval
Term
Quadrangular Space
borders
Definition
medial: long head of triceps
lateral: humeral shaft
superior: teres minor
inferior: teres major
Term
Quadrangular Space
contents
Definition
-axillary nerve: to innervate the teres minor and deltoid sensation to the lateral arm
-posterior humeral circumflex artery
Term
Triangular space
borders
Definition
inferior: teres major
lateral: long head of triceps
superior: lower border of teres minor
Term
triangular space
contents
Definition
scapular circumflex artery
Term
triangular interval
borders
Definition
superior: teres major
lateral: lateral head of the triceps or the humerus
medial: long head of the triceps
Term
triangular interval
contents
Definition
profunda brachii artery
radial nerve
Term
glenohumeral joint blood supply
Definition
-anterior and posterior circumflex humeral arteries
-suprascapular arteries
-scapular circumflex arteries
Term
innervation of the glenohumeral joint
Definition
Suprascapular nerve
Axillary nerve
Lateral pectoral nerve
Term
bursae
Definition
-small fluid filled sac lined by synovial membrane
-provides a cushion between bones and tendons or muscles around a joint
Term
shoulder bursae
Definition
-subdeltoid bursa
-subcoracoid bursa
-subacromial bursa
Term
dislocation statistic regarding direction
Definition
90% are anterior dislocation
Term
Types of separated shoulder and descruptions
Definition
Type 1 - damage to the acromioclavicular joint
Type 2 - acromioclavicular joint it totally busted
Type 3 - acromioclavicular joint and coracoacromial
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