W7 - Shoulder Girdle: Bones, Ligaments & Muscles Flashcards

1
Q

What bones make up the shoulder girdle

A

Clavicle
Scapula
Sternum

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2
Q

What is the shoulder joint called

A

Gleno-humeral joint

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3
Q

What joint joins the sternum and the clavicle

A

Sternoclavicular joint

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4
Q

What is the function of the shoulder girdle

A

Increases ROM in the upper limb by changing the position of the glenoid fossa
Clavicle absorbs tension & compresses stress allowing forces to be transmitted from upper limb to the trunk

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5
Q

What shape is the clavicle

A

“S” shape

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6
Q

Describe the medial end of the clavicle

A

Convex anteriorly
Rounded triangular shape
Joins with the sternum = sternoclavicular joint

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7
Q

Describe the lateral end of the clavicle

A

Concave anteriorly
Broad and flatter
Articulates with the acromion process of scapula = acromioclavicular joint

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8
Q

What attaches to the deltoid tubercle of the clavicle

A

Anterior fibres of deltoid

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9
Q

What attaches to the trapezoid line and conoid tubercle of the clavicle

A

Coro clavicular ligament

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10
Q

What attaches in the subclavian groove of the clavicle

A

Subclavian vessels

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11
Q

What attaches to the costal tuberosity of the clavicle

A

Costoclavicular ligament joints

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12
Q

What 5 muscles attach to the clavicle

A

Sternocleidomastoid
Pectoralis Major
Trapezius
Deltoid
Subclavius

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13
Q

Describe the location and shape of the scapular

A

Sits posteriorly
Flat bone
Forms glenohumeral joint & acromiclavicular joint

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14
Q

Name the 3 borders of the scapular

A

Medial, lateral and superior

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15
Q

Name the 2 angles of the scapula

A

Superior and inferior

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16
Q

What does the spine of the scapula divide it into

A

Supraspinous Fossa
Infraspinous fossa

17
Q

What are the 3 divisions of the sternum

A

Manubrium
Sternum
Xiphoid process

18
Q

Name 3 other Boney landmarks on the sternum

A

Sternal notch
Clavicular notch
Sternal angle

19
Q

Classify the acromioclavicular joint

A

Synovial plane joint (ONLY GLIDING MOVEMENTS)
Covered in fibrocartilage

20
Q

Classify the sternoclavicular joint

A

Synovial saddle joint
Convex clavicle covered in fibrocartilage, manubrium concave covered in hyaline cartilage & costal cartilage of first rib

21
Q

What does the scapulothoracic junction do

A

Joins scapular to the thorax

22
Q

Describe the subclavius muscle

A

Inferior to clavicle
From: costochondral junction of 1st rib To: inferior surface of middle 1/3 clavicle
Nerve supply: subclavian nerve C5,6
Stabilises SCJ & depresses lateral end of clavicle

23
Q

Describe pectoralis minor

A

Anterior chest wall
From: anterior & superior surface of ribs 3,4,5 To: coracoid processes of the scapula
Nerve supply: medial & lateral pectoral nerve C5-8, T1
Shoulder girdle depression, protraction and accessory muscle respiration

24
Q

Describe serratus anterior muscle

A

From: anterior surface of medial border of scapula To: lateral surface of upper 8-9 ribs
Nerve supply: long thoracic nerve C5-7
Shoulder girdle protraction and lateral rotation of scapula

25
Q

Describe trapezius muscle

A

From: superior nuchal line & external occipital protuberance, ligamentum nuchae, spinous processes C7-T12, supraspinous ligament To: lateral 1/3 clavicle, acromion and spine of scapula, medial end of scapula line
Nerve supply: accessory nerve C3-4

26
Q

Describe levator scapulae muscle

A

From: superior portion of medial border of scapula To: transverse processes C1-4
Nerve supply: dorsal scapular nerve C4-5
Actions: elevation, medial rotation, cervical extension, cervical side flextion

27
Q

Describe Rhomboid minor muscle

A

From: spinous processes c7-T1 To: medial border of scapula at root of spine
Nerve supply: dorsal scapular nerve C4-5
Actions: elevation and retraction

28
Q

Describe rhomboid major muscle

A

From: spinous processes T2-5 To: medial border of scapula from root of spine to inferior angle
Nerve supply : dorsal scapular nerve C4-5
Actions: elevation and retraction