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Anatomy > Orthopedics Shoulder > Flashcards

Orthopedics Shoulder Flashcards

(47 cards)

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1
Q

Trapezius Action

A
  1. Elevates the Scapula
  2. Upwardly Rotates the Scapula
  3. Downwardly Rotates the Scapula
  4. Retracts Scapula
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2
Q

Trapezius Nerve

A

Motor: Spinal Accessory (Cranial 11)
Sensory: Ventral Rami of C3 and C4

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3
Q

Latissimus Dorsi Action

A
  1. Extends the Arm from Flexed Position
  2. Internally (Medially) Rotates the Arm
  3. Adducts the Arm
  4. Downwardly Rotates the Scapula
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4
Q

Latissimus Dorsi Nerve

A

Thoracodorsal (C6,7,8)

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5
Q

Levator Scapulae Action

A
  1. Elevates the Scapula
  2. Extends and/or Laterally Flexes Neck
  3. Assists to Downwardly Rotate the Scapula
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6
Q

Levator Scapulae Nerve

A

Dorsal Scapular C5

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7
Q

Rhomboid Minor Action

A
  1. Retracts the Scapula
  2. Assists to Downwardly Rotate the the Scapula
  3. Eccentrically Helps to Control Rate of Scapular Upward Rotation During Arm Elevation
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8
Q

Rhomboid Minor Nerve

A

Dorsal Scapular C5

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9
Q

Rhomboid Major Action

A
  1. Retracts the Scapula
  2. Assists to Downwardly Rotate the Scapula
  3. Eccentrically Helps to Control Rate of Scapular Upward Rotation During Arm Elevation
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10
Q

Rhomboid Major Nerve

A

Dorsal Scapular C5

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11
Q

Serratus Anterior Action

A
  1. Protracts the Scapula
  2. Assists to Upwardly Rotate the Scapula
  3. Functionally Prevents Winging
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12
Q

Serratus Anterior Nerve

A

Long Thoracic C5,6,7

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13
Q

Deltoid Origin

A
  1. Anterior Portion: Lateral Portion of Clavicle
  2. Middle Portion: Acromion Process
  3. Posterior Portion: Scapular Spine
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14
Q

Deltoid Insertion

A

Deltoid Tuberosity

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15
Q

Deltoid Action

A
  1. Anterior Portion: Flexes and Internally Rotates Arm
  2. Middle Portion: Abducts the Arm
  3. Posterior Portion: Extends and Externally Rotates Arm
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16
Q

Deltoid Nerve

A

Axillary

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17
Q

Supraspinatus Origin

A

Supraspinous Fossa

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18
Q

Supraspinatus Insertion

A
  1. Uppermost of Three Facets of the Greater Tubercle of Humerus
  2. Capsule of the Shoulder Joint
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19
Q

Supraspinatus Action

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A
  1. Abducts the Arm (almost solely for first 20 degrees)

2. Helps guide Humeral Head into Central Glenoid with Elevation of Shoulder

20
Q

Supraspinatus Nerve

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A

Suprascapular C5, 6

21
Q

Infraspinatus Origin

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A

Infraspinous Fossa

22
Q

Infraspinatus Insertion

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A
  1. Middle Facet of the Greater Tubercle of the Humerus

2. Capsule of the Shoulder Joint

23
Q

Infraspinatus Action

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A
  1. Externally Rotates Arm

2. Helps produce inferior translation and compression into Glenoid (along with other rotator cuff muscles)

24
Q

Infraspinatus Nerve

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A

Suprascapular C5, 6

25
Teres Minor Origin
Middle Half of the Scapula's Lateral Border
26
Teres Minor Insertion
1. Lowest of Three Facets of the Greater Tubercle of Humerus | 2. Capsule of the Shoulder Joint
27
Teres Minor Action
1. Externally Rotates Arm | 2. Helps produce inferior translation and compression into Glenoid (along with other rotator cuff muscles)
28
Teres Minor Nerve
Axillary C5, 6
29
What Muscles make up the Rotator Cuff?
Supraspinatus Infraspinatus Teres Minor Subscapularis
30
Teres Major Origin
Lower 1/3 of the Scapula's Lateral Border
31
Teres Major Insertion
Medial Lip of the Bicipital Groove of the Humerus
32
Teres Major Action
1. Internally Rotates the Arm 2. Extends the Arm 3. Adducts the Arm
33
Teres Major Nerve
Lower Subscapular C5,6
34
Subscapularis Origin
Subscapular Fossa
35
Subscapularis Insertion
1. Lesser Tubercle of the Humerus | 2. Lower part of the Capsule of the Shoulder Joint
36
Subscapularis Action
Internally Rotates the Arm
37
Subscapularis Nerve
Upper and Lower Subscapular C5,6
38
Pectoralis Major Action
1. Adducts the Arm 2. Internally Rotates the Arm 3. Horizontal Adduction of the Arm 4. Flexes Shoulder from Extended Position 5. Depresses Arm and Shoulder
39
Pectoralis Major Nerve
1. Clavicular Portion: Lateral Pectoral C5,6,7 | 2. Sternal Portion: Medial Pectoral C8, T1
40
Pectoralis Minor Action
1. Depresses Scapula | 2. Downwardly Rotates Scapula
41
Pectoralis Minor Nerve
Medial Pectoral C8, T1
42
Coracobrachialis Action
1. Flexes Shoulder | 2. Assists to Adduct Humerus
43
Coracobrachialis Nerve
Musculocutaneous C5,6,7
44
Biceps Brachii Action
1. Flexes Elbow (when supinated) 2. Supinates Forearm from neutral 3. Flexes Shoulder (when palm facing up)
45
Biceps Brachii Nerve
Musculocutaneous C5,6,7
46
Triceps Brachii Action
1. Long Head: Extends Elbow, Adducts Arm, Assists in Shoulder Extension from a Flexed Position 2. Lateral Head: Elbow Extension 3. Medial Head: Elbow Extension
47
Triceps Brachii Nerve
Radial C7,8

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