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Anatomy > Scapula Region and Shoulder Joint > Flashcards

Scapula Region and Shoulder Joint Flashcards

1
Q

What are the bones of the Pectoral Girdle?

A
  1. Clavicle
  2. Scapula
  3. Sternum
  4. Humerus
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2
Q

What joint is the shoulder joint?

A

The Glenohumeral Joint–> Synovial Joint

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3
Q

What are the features of a Synovial Joint?

A
  1. Capsule with a fibrous outer layer and inner synovial membrane
  2. Hyaline Cartilage lining the bony articulating surfaces
  3. Synovial Fluid
  4. Ligaments to reinforce
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4
Q

What feature of the Glenohumeral joint makes it more mobile than the hip joint?

A

The Glenoid fossa is shallow, allows for more rotation

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5
Q

What are the ligaments of the Glenohumeral Joint?

A
  1. Glenohumeral Ligaments
  2. Coracohumeral Ligament
  3. Transverse Humeral Ligament
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6
Q

Describe the Glenohumeral Ligaments

A

3 bands: Superior, Middle and Inferior, Runs with the joint capsule from the Glenoid Fossa to the Anatomical Neck of the Humerus

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7
Q

Describe the Coracohumeral Ligament

A

Attaches the base of the coracoid process to the Greater Tuberosity of the Humerus

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8
Q

Describe the Transverse Humeral Ligament

A

Holds to tendon of the Long heads of Biceps in the Intertubercular Groove

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9
Q

What is Bursae?

A

It is a fluid-filled pouch, lined by synovial membrane containing synovial fluid

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10
Q

What is the function of Bursae?

A

Reduce friction between bones and soft tissue

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11
Q

What are the Rotator Cuff Muscles?

A
  1. Subscapularis
  2. Supraspinatus
  3. Infraspinatus
  4. Teres Minor
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12
Q

What are the attachments of the Rotator Cuff Muscles?

A

Greater Tuberosity–> Supraspinatus, Infraspinatus and Theres Minor
Lesser Tuberosity–> Subscapularis

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13
Q

What are the origins of Subscapularis?

A

Subscapular Fossa

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14
Q

What is the function of the Subscapularis?

A

Medially Rotate the arm

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15
Q

What is the Nerve Supply of Subscapularis?

A

Upper and Lower Subscapular Nerves

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16
Q

What are the origins of Supraspinatus?

A

Supraspinous Fossa

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17
Q

What is the function of Supraspinatus?

A

Abducts the arm and assists the Deltoid Muscle

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18
Q

What is the nerve supply of Supraspinatus?

A

Suprascapular Nerve

19
Q

What are the origins of Infraspinatus?

A

Infraspinous Fossa

20
Q

What is the function of Infraspinatous?

A

Lateral Rotation of the Arm

21
Q

What is the nerve supply of Infraspinatus?

A

Suprascapular Nerve

22
Q

What are the origins of Teres Minor?

A

Posterior Surface of Scapula

23
Q

What is the function of Teres Minor?

A

Lateral Rotation of the Arm

24
Q

What is the nerve supply of Trees Minor?

A

Axillary Nerve

25
Q

What are the origins of Teres Major?

A

Lower Lateral Part of the Scapula

26
Q

Where does Teres Major Attach?

A

Medial edge of the bicipital groove of the Humerus

27
Q

What is the function of Teres Major?

A
  1. Adducts the Shoulder

2. Medial Rotation of Arm

28
Q

What is the nerve supply of Teres Major?

A
  1. Lower Subscapular Nerve
29
Q

What are the origins of Deltoid?

A

Clavicle and Scapula

30
Q

Where does Deltoid attach?

A

Deltoid tuberosity on the Humerus

31
Q

What is the function of the Deltoid?

A
  1. Anterior Fibres–> Flex the Shoulder
  2. Posterior Fibres–> Extend the Shoulder
  3. Middle Fibres–> Abducts the Shoulder
32
Q

What muscles are involved in Elevation of the Scapula?

A
  1. Superior Trapezius
  2. Rhomboids
  3. Levator Scapulae
33
Q

What muscles are involved in Depression of the Scapula?

A
  1. Pectoralis Minor

2. Serratus Anterior

34
Q

What muscles are involved in Protraction of the Scapula?

A
  1. Pectoralis Minor

2. Serratus Anterior

35
Q

What muscles are involved in Retraction of the Scapula?

A
  1. Rhomboids
  2. Latissimus Dorsi
  3. Middle Trapezius
36
Q

What muscles are involved in Rotation of the Scapula?

A
  1. Serratus Anterior
  2. Superior Trapezius
  3. Inferior Trapezius
37
Q

What muscles are involved in Medial Rotation of the Shoulder?

A
  1. Subscapularis
  2. Teres Major
  3. Sternal Head of Pectoralis Major
  4. Anterior Deltoid
  5. Latissimus Dorsi
38
Q

What muscles are involved in Lateral Rotation of the Shoulder?

A
  1. Infraspinatus
  2. Teres Minor
  3. Posterior Deltoid
39
Q

What muscles are involved in Flexion of the Shoulder?

A
  1. Pectoralis Major
  2. Anterior Deltoid
  3. Biceps Brachii
  4. Coracobrachialis
40
Q

What muscles are involved in Extension of the Shoulder?

A
  1. Latissimus Dorsi
  2. Posterior Deltoid
  3. Teres Major
  4. Triceps
41
Q

What muscles are involved in Adduction of the Shoulder?

A
  1. Pectoralis Major
  2. Latissimus Dorsi
  3. Teres Major
42
Q

What muscles are involved in Abduction of the Shoulder?

A
  1. Deltoid
  2. Supraspinatus
  3. Trapezius and Serratus Anterior
  4. Infraspinatus
  5. Teres Minor
43
Q

What is the blood supply to the shoulder?

A
  1. Anterior and Posterior Circumflex Humeral Arteries
  2. Axillary Artery
  3. Brachial Artery
44
Q

Where is the Circulatory Anastomosis of the Scapula?

A

Between the 1st part of the Subclavian artery and the 3rd part of the Axillary Artery

Anatomy (14 decks)

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