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Shoulder
MSA
50
Anatomy
Undergraduate 4
11/13/2011

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Cards

Term

Where is the brachial plexus formed?

Definition
Ventral Primary Rami C5-T1
Term
Upper limb primarily consists of
Definition
Arm, shoulder, forearm, wrist, hand
Term
Shoulder joint, or pectoral girdle, are formed by 
Definition
Scapula, clavicle, maniubrium of sternum
Term
Medial end of clavicle articulates with
Definition

Maniubrium of sternum

Term
Lateral end of clavicle articulates with
Definition
Acromion of scapula
Term
Clavicle serves as support for
Definition
Scapula and arm
Term

Clavicle enables _______for deeps inspiration

Definition
Elevation of ribs
Term
Scapula overlays ribs
Definition
2-7
Term

_________ is a thick projecting ridge of bone that continues laterally to form acromion process

Definition
Spine of scapula
Term

Humerus articulates with

Definition
Radius and ulna
Term
Greater and lesser tubercles of the humeral head provide attachment and leverage to
Definition
Scapulohumeral muscles
Term
Surfaces of the AC joint  are covered by
Definition
Fibrous cartilage
Term

Movements of the SC joint

Definition
Elevation, depression, protraction, retraction, circumduction
Term
SC joint is reinforced by
Definition
Sternoclavicular, interclavicular, and costoclavicular ligaments
Term
Glenohumeral joint covered in
Definition
Hyaline cartilage
Term
Movements of GH joint
Definition

Abduction, adduction, flexion, extension, circumduction, and rotation

Term
GH joint innervated by
Definition
Axillary, suprascapular, lateral pectoral nerve
Term
GH joint receives blood from
Definition

Suprascapular, humeral circumflex, and scapular circumflex arteries

Term
Function of the GH joint
Definition

To keep the head of the humerous down into the glenoid cavity

Term
Ligaments of the GH joint
Definition
Superior, middle, lateral GH; transverse, coracohumeral, coracoacromial
Term
Superior, middle, lateral GH; transverse, coracohumeral, coracoacromial
Definition
Term
Rotator cuff formed by
Definition
Subscapularis, supraspinatus, infraspinatus, teres minor
Term
Function of the rotator cuff
Definition
Hold the head of the humerus DOWN in the cavity
Term
Function of Shoulder bursae
Definition

Form lubricating mechanism between rotator cuff and coracromial arch during shoulder joint movement

Term
Quadrangular space is bounded by the 
Definition

Teres minor and subscapularis muscle(Superiorly)

                Teres major (inferiorly)

long head of the triceps (medially)

Term
Upper triangular space
Definition

Teres minor,  teres major, long head triceps

Term
Lower triangular space
Definition
Teres major, long head triceps, medial head triceps
Term
Suprascapular artery suppies
Definition

Supraspinatus and infraspinatus muscles; shoulder and AC joint

Term
Axillary artery branches
Definition
Supreme thoracic, thoarcoacromial, lateral thoracic, subscapular
Term
Brachial artery extends from
Definition
Inferior border of teres major
Term
Brachial branches
Definition
Deep brachial, superior ulnar collateral, inferior ulnar collateral
Term
Cephalic vein empties into the 
Definition
Axillary vein
Term

Brachial plexus consists of

Definition
Roots, trunks, cords, branches
Term
Branches of BP
Definition
Dorsal scapular, long thoracic
Term
Trunks of BP
Definition
Superior, middle, inferior
Term
Cords of BP
Definition
Lateral, posterior, medial
Term
Terminal Nerves of BP
Definition
Axillary, Musculocutaneous, radial, median, ulnar
Term
Cutaneus nerves
Definition

Supraclavicular, medial brachial cutaneous, medial antebrachial cutaneous, lateral brachial cutaneous, lateral antebrachial cutaneous, posterior brachial, antebrachial cutaneous, intercostal brachial

Term
Shoulder musculature groups
Definition
Superficial extrinsic, deep extrinsic, intrinsic
Term
Superficial extrinsic muscles
Definition
Latissimus dorsi, trapezius
Term
Deep intrinsic muscles
Definition
Levator scapulae, rhomboid major, rhomboid minor, serratus anterior
Term
Intrinsic muscles
Definition
Deltoid, teres major, rotator cuff group
Term
Pectoral muscles:
Definition

Pectoralis major, pectoralis minor, subclavius, serratus anterior

Term
Pect Major is innervated by
Definition
Medial and lateral pectoral nerves
Term
Pect minor is innervated by
Definition
Medial pectoral nerve
Term
Supraspinatus OIA
Definition

O: clavicle, acromion, scapular spine

                I: Deltoid tuberosity, halfway down humerus

                A: abductor, flexion, and extension of the humerus

Term
Teres Minor OIA
Definition

O: Upper two thirds of the lateral border of the scapula

                I: Lowermost of the three facets of the greater tuberosity of the humerus

                A: adductor and lateral rotator of the humerus, main action is as a member of RTC

Term
Infraspinatus OIA
Definition

O: Infraspinous fossa of the scapula

                I: Middle facet of the greater tuberosity of the humerus

                A: Lateral rotator of the humerus

Term
Subscapularis OIA
Definition

O: Medial two thirds of the costal surface of scapula

                I: Lesser tuberosity, shoulder joint capsule, the front upper shaft of the humerus

                A: adductor, medial rotator of the humerus

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