Unit 10 - Shoulder - Bones, Joints, Ligaments, Muscles

Which muscle has 3 heads

(3 = Tri) Triceps Brachii (long - scapula, lateral - lateral humerus, medial (posterior humerus)

Anterior shoulder muscles (3)

(A - BiCeP) 1) Pectoralis Major (chest, superficial, ADD, Int Rotation 2) Biceps Brachii (upper arm, shoulder flexion, elbow flexion, forearm supination) 3) Coracobrachialis (upper arm, shoulder flexion, ADD)

Which muscle runs through the bicipital groove

(Bi & Bi) . Biceps Brachii short head - coracoid process long head - glenoid (superior) *** attaches to the radius (radioal) tuberosity

Posterior shoulder muscles (3)

(P - ToTaL) 1) Triceps Brachii (posterior upper arm - 3 heads, shoulder and elbow extension) 2) Latissimus Dorsi (posterior back, superficial, shoulder ADD, Ext, Int Rotation) 3) Teres Major - (posterior shoulder, ADD, Ext, Int Rotation)

Scapular Muscles

3 Posterior - TLR (trailer) - Trapezius (elevation, depression, retraction), Levator Scapulae (elevation), Rhomboids (retraction) 1 Lateral/Posterior - Serratus Anterior (Protraction) 1 Anterior - Pectoralis Minor (Protraction, Depression

Which shoulder ligaments stabilize the AC joint

Acromioclavicular & Coracoclavicular (holds down the clavicle) ligament

What joint forms the clavical (acromion process) and scapula

Acromioclavicular joint (AC)

What ligaments attach to the CORAcoid process

CORAcohumeral & CORAcoclavicular ligaments

Which shoulder ligament forms the Acromial Arch

Coracoacromial ligament

Which shoulder ligament stabilizes the Superior GH joint?

Coracohumeral & Coracoacromial ligament (forms "Acromial Arch" over the humeral head

Which muscle has 3 regions (anterior, lateral, posterior) and is superficial

Deltoid - ABD, Flexion, Extension

What joint connects the Glenoid and Humeral

Glenohumeral joint

Which shoulder ligament has the fibrocartilage ring inside the GH joint (runs along outer edge of glenoid) - connects with the long head of biceps tendon

Glenoid Labrum

Glenohumeral Ligament (GHL)

Humeral head to Anterior Glenoid (Superior GHL, Middle, Inferior) Multidirectional Reinforces GH joint capsul

Which scapular muscle has a minor and major

Rhomboids (minor is superior to major)

Name the 4 shoulder joints

SAGS (droopy shoulder SAGS) 1) Sternoclavicular (Sterum to Clavical) 2) Acromioclavicular (Acromion process (Scapula) to Clavicle) 3) Genohumeral (Glenoid (Scapula) to Humeral head) 4) Scapulothoracic Joint (Scapular to Posterior Rib)

Rotator Cuff Muscles (4)

SITS supraspinatus (ABD), infraspinatus . (Ext Rotation), teres minor (Ext Rotation), subscapularis (Int Rotation)

Which of the shoulder joints is a non-traditional joint?

Scapulothoracic joint

Which scapular muscle prevents scapular "winging" (shoulder blade/scapula sticks out) - scapular protraction

Serratus Anterior

Which shoulder ligament holds the long head of biceps tendon in the bicipital groove

Transverse Humeral Ligament

Most superficial scapular muscle

Trapezius

Which scapular bone forms a "roof' over the humerus head?

acromion process

combination of shoulder muscles working together

downward rotators (rhomboids, levator scapulue, pectoralis minor) (RoLP down)

Scapular Motions

elevation (superior motion - shoulder shrug), depression (inferior), protraction (lateral - shoulders forward), retraction (medial), upward rotation (inferior angle rotates lateral), downward rotation (rotates medial)

Shoulder motions

flexion / extension, abduction / ADDuction (horizontal), internal / external rotation

Which large muscle goes through the armpit, attaches ???

latissimus dorsi

Which shoulder landmark tells you anterior or posterior side of the scapula

spine

What does the Rotator Cuff Muscles stabilize

stabilizes humeral head against glenoid

combination of shoulder muscles working together

upward rotators (S&T - STep up)