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3200 Principles of Human Movement > Ch 5 Shoulder Joint > Flashcards

Ch 5 Shoulder Joint Flashcards

1
Q

What 3 bones serves as the main attachments for the shoulder joint?

A

Clavicle, Scapula, Humerus

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2
Q

Shoulder joint in specific can be called the _______ joint

A

Glenohumeral Joint

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3
Q

The glenohumeral joint (GH) or shoulder joint are defined by what 3 characteristics?
M______
B______________
E___________

A

Multiaxial
Ball & socket
Enarthrodial

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4
Q

Shoulder joint is commonly injured due to its

A

anatomical design

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5
Q

What 3 characteristics describe why the shoulder joint is so prone to injury?
S______________
L____________
L__________________

A

Shallowness of glenoid fossa,
Laxity of ligaments,
Lack of strength & endurance

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6
Q

(Shoulder joint vs Shoulder Girdle movement)
Abduction =
Adduction =
Flexion =
Extension =

A

Upward rotation
Downward rotation
Elevation
Depression

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7
Q

(Shoulder joint vs shoulder girdle movement)
Internal rotation =
External rotation =
Horizontal abduction =
Horizontal adduction =
Diagonal abduction =
Diagonal adduction =

A

Protraction
Retraction
Retraction
Protraction
Retraction/ Depression
Protraction / Elevation

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8
Q

Movement of the humerus medically around its long axis toward the midline =

A

Internal rotation

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9
Q

Movement of humerus laterally around its long axis away from the midline =

A

External rotation

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10
Q

What are the anterior muscles

A
  • Pec major
  • Coracobrachialis
  • Subscapularis
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11
Q

What are the posterior muscles

A
  • Latissimus Dorsi
  • Teres major
  • Infraspinatus
  • Teres minor
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12
Q

What are the superior muscles

A
  • Deltoid
  • Supraspinatus
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13
Q

What is the origin of pec major?
What is the insertion?

A
  • Medial anterior surface of clavicle AND first six ribs at sternum
  • flat tendon 2-3 inches outer intertubercular groove (humerus)
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14
Q

What are the actions of pec major?

A
  • adduction of humerus
  • internal rotation of humerus
  • horizontal adduction of humerus
  • diagonal adduction of humerus
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15
Q

What is the origin of corachobracialis?
What is the insertion?

A
  • coracoid process of scapula
  • middle medial humerus shaft
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16
Q

What are the actions of coracobrachialis?

A
  • flexion of GH
  • horizontal adduction of GH
  • Diagonal adduction of GH
17
Q

What are the origins of the deltoid?
What is the insertion?

A
    1. Anterior 3rd of clavicle 2. Lateral acromion 3. Inferior spine of scapula
  • deltoid tuberosity of humerus
18
Q

What are the actions of deltoid?

A
  • horizontal abduction and adduction
  • flexion
  • extension
  • abduction
19
Q

What is the origin of latissimus dorsi?
What is the insertion? (Same as Teres major)

A
  • posterior ilium // lower 6 thoracic vertebrae // lower 3 ribs
  • medial intertubercular groove (humerus)
20
Q

What is the action of latissimus dorsi? (Same as Teres major)

A
  • adduction of GH
  • extension of GH
  • internal rotation of GH
21
Q

What is the origin of Teres major?
What is the insertion? (Same as lats)

A
  • inferior third of lateral border scapula
  • medial intertubercular groove
22
Q

What is the action of Teres major? (Same as Lat)

A
  • adduction of GH
  • Extension of GH
  • internal rotation of GH
23
Q

What is the origin of supraspinatus?
What is the insertion?

A
  • medial 2/3 of supraspinatus fossa
  • superior of greater tubercle
24
Q

What are the actions of supraspinatus?

A
  • abduction of humerus
  • stabilization of humerus
25
Q

What is the origin of infraspinatus?
What is the insertion? (Same as Teres minor)

A
  • posterior side of scapula, below spine of scapula
  • posterior greater tubercle (kind of below supraspinatus which is SUPERIOR greater tubercle, one is on top the other is on the back)
26
Q

What is the action of infraspinatus? (Same as Teres minor)

A
  • external rotation
  • horizontal abduction
  • diagonal abduction
  • extension
  • stabilization of glenoid fossa
27
Q

What is the origin of Teres minor?
What is the insertion? (Same as infraspinatus)

A
  • lateral border of scapula on posterior side
  • greater tubercle on posterior side
28
Q

What is the action of Teres minor? (Same as infraspinatus)

A
  • external rotation
  • horizontal abduction
  • diagonal abduction
  • extension
  • stabilization of glenoid fossa
29
Q

What is the origin of subscapularis?
What is the insertion?

A
  • anterior surface of subscapular fossa
  • lesser tubercle of humerus
30
Q

What is the action of subscapularis?

A
  • internal rotation of GH
  • adduction of GH
  • extension of GH

3200 Principles of Human Movement (3 decks)

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