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Anatomy > Orthopedics Shoulder > Flashcards

Orthopedics Shoulder Flashcards

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

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

A

Suprascapular C5, 6

21
Q

Infraspinatus Origin

A

Infraspinous Fossa

22
Q

Infraspinatus Insertion

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

2. Capsule of the Shoulder Joint

23
Q

Infraspinatus Action

A
  1. Externally Rotates Arm

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

24
Q

Infraspinatus Nerve

A

Suprascapular C5, 6

25
Q

Teres Minor Origin

A

Middle Half of the Scapula’s Lateral Border

26
Q

Teres Minor Insertion

A
  1. Lowest of Three Facets of the Greater Tubercle of Humerus

2. Capsule of the Shoulder Joint

27
Q

Teres Minor Action

A
  1. Externally Rotates Arm

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

28
Q

Teres Minor Nerve

A

Axillary C5, 6

29
Q

What Muscles make up the Rotator Cuff?

A

Supraspinatus
Infraspinatus
Teres Minor
Subscapularis

30
Q

Teres Major Origin

A

Lower 1/3 of the Scapula’s Lateral Border

31
Q

Teres Major Insertion

A

Medial Lip of the Bicipital Groove of the Humerus

32
Q

Teres Major Action

A
  1. Internally Rotates the Arm
  2. Extends the Arm
  3. Adducts the Arm
33
Q

Teres Major Nerve

A

Lower Subscapular C5,6

34
Q

Subscapularis Origin

A

Subscapular Fossa

35
Q

Subscapularis Insertion

A
  1. Lesser Tubercle of the Humerus

2. Lower part of the Capsule of the Shoulder Joint

36
Q

Subscapularis Action

A

Internally Rotates the Arm

37
Q

Subscapularis Nerve

A

Upper and Lower Subscapular C5,6

38
Q

Pectoralis Major Action

A
  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
Q

Pectoralis Major Nerve

A
  1. Clavicular Portion: Lateral Pectoral C5,6,7

2. Sternal Portion: Medial Pectoral C8, T1

40
Q

Pectoralis Minor Action

A
  1. Depresses Scapula

2. Downwardly Rotates Scapula

41
Q

Pectoralis Minor Nerve

A

Medial Pectoral C8, T1

42
Q

Coracobrachialis Action

A
  1. Flexes Shoulder

2. Assists to Adduct Humerus

43
Q

Coracobrachialis Nerve

A

Musculocutaneous C5,6,7

44
Q

Biceps Brachii Action

A
  1. Flexes Elbow (when supinated)
  2. Supinates Forearm from neutral
  3. Flexes Shoulder (when palm facing up)
45
Q

Biceps Brachii Nerve

A

Musculocutaneous C5,6,7

46
Q

Triceps Brachii Action

A
  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
Q

Triceps Brachii Nerve

A

Radial C7,8

Anatomy (12 decks)

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