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Anatomy > Dorsal Scapular Muscles > Flashcards

Dorsal Scapular Muscles Flashcards

1
Q

What is the P of the Deltoid?

A

Doing yoga poses with arms overhead (all fibers), reaching for (anterior fibers) and putting on (posterior fibers) a seat belt

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2
Q

What is the MA of the Deltoid?

A

Clavicular (Anterior): flexion and medial (internal) rotation of the arm

Acromial (Middle): abduction of the arm

Spinal (Posterior): extension and lateral (external) rotation of the arm

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3
Q

What is the PA of the Deltoid?

A

Clavicle, acromion, and spine of scapula (where trap ends)

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4
Q

What is the DA of the Deltoid?

A

Deltoid tuberosity of humerus

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5
Q

What is the N for the Deltoid?

A

Axillary nerve (C5 and C6)

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6
Q

What is the P of the Pectoralis Major?

A

Reaching across the body into an overhead cabinet or putting on a seatbelt

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7
Q

What is the MA of the Pectoralis Major?

A

Adduction and medial (internal) rotation of the humerus

Protraction (abduction) of the scapula (draws scapula anteriorly and inferiorly)

Horizontal adduction of the arm

Clavicular Head: flexion of the humerus

Sternocostal Head: extension of the humerus from the flexed position

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8
Q

What is the PA of the Pectoralis Major?

A

Clavicular Head: clavicle

Sternocostal Head: sternum, superior 6 costal cartilages, and external oblique muscle

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9
Q

What is the DA of the Pectoralis Major?

A

Lateral lip of intertubercular sulcus of humerus

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10
Q

What is the N for the Pectoralis Major?

A

Lateral and medial pectoral nerves: Clavicular Head (C5 and C6) and Sternocostal Head (C7, C8, T1)

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11
Q

What is the P of the Pectoralis Minor?

A

Taking a deep breath or walking with crutches

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12
Q

What is the MA of the Pectoralis Minor?

A

Protraction (abduction) of the scapula (stabilization by drawing it inferiorly and anteriorly against thoracic wall)

With the scapula fixed, assists to elevate the thorax during forced inhalation

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13
Q

What is the PA of the Pectoralis Minor?

A

Ribs 3-5

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14
Q

What is the DA of the Pectoralis Minor?

A

Coracoid process

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15
Q

What is the N for the Pectoralis Minor?

A

Medial pectoral nerve (C8 and T1) and lateral pectoral nerve (variable)

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16
Q

What is the P of the Infraspinatus?

A

Playing racket sports or table tennis

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17
Q

What is the MA of the Infraspinatus?

A

External rotation of the shoulder (glenohumeral joint)

MAIN EXTERNAL ROTATOR

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18
Q

What is the PA of the Infraspinatus?

A

Infraspinous fossa

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19
Q

What is the DA of the Infraspinatus?

A

Greater tubercle of humerus

20
Q

What is the N for the Infraspinatus?

A

Suprascapular nerve (C5 and C6)

21
Q

What is the P of the Teres Major?

A

Wiping butt and coochie

22
Q

What is the MA of the Teres Major?

A

Adduction and internal (medial) rotation of the shoulder (glenohumeral joint)

23
Q

What is the PA of the Teres Major?

A

Posterior scapula

24
Q

What is the DA of the Teres Major?

A

Medial lip of intertubercular sulcus of the humerus

25
Q

What is the N for the Teres Major?

A

Lower subscapular nerve (C5 and C6)

26
Q

What is the P of the Supraspinatus?

A

Painting overhead or washing your hair

27
Q

What is the MA of the Supraspinatus?

A

Initiates and assists deltoid in abduction of the arm

Stabilize the head of humerus in glenoid cavity, along with the other SITS muscles

28
Q

What is the PA of the Supraspinatus?

A

Supraspinous fossa of the scapula

29
Q

What is the DA of the Supraspinatus?

A

Greater tubercle of humerus

30
Q

What is the N for the Supraspinatus?

A

Suprascapular nerve (C4, C5, and C6)

31
Q

What is the P of the Teres Minor?

A

Washing the back of head and neck

32
Q

What is the MA of the Teres Minor?

A

External rotation of the shoulder (glenohumeral joint) and stabilization of the head of humerus in glenoid cavity

33
Q

What is the PA of the Teres Minor?

A

Lateral border of the scapula

34
Q

What is the DA of the Teres Minor?

A

Greater tubercle of the humerus

35
Q

What is the N for the Teres Minor?

A

Axillary nerve (C5 and C6)

36
Q

What is the P of the Subscapularis?

A

Wiping butt and coochie, putting on a bra, or throwing a baseball

37
Q

What is the MA of the Subscapularis?

A

Internal rotation of the shoulder and stabilization of the head of humerus in glenoid cavity

38
Q

What is the PA of the Subscapularis?

A

Subscapular fossa

39
Q

What is the DA of the Subscapularis?

A

Lesser tubercle of humerus

40
Q

What is the N for the Subscapularis?

A

Upper and lower subscapular nerve (C5, C6, and C7)

41
Q

What is the P of the Serratus Anterior?

A

Pushing open a heavy door

42
Q

What is the MA of the Serratus Anterior?

A

Protraction of the scapula (scapulothoracic joint), upward rotation of the scapula (scapulothoracic joint), and holds the scapula against the thoracic wall

43
Q

What is the PA of the Serratus Anterior?

A

Lateral parts of ribs 1-8 or 1-9

44
Q

What is the DA of the Serratus Anterior?

A

Medial border of scapula

45
Q

What is the N for the Serratus Anterior?

A

Long thoracic nerve (C5, C6, and C7)

SALT- Serratus Anterior Long Thoracic

Anatomy (29 decks)

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