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Anatomy > Scapular and Pectoral Muscles > Flashcards

Scapular and Pectoral Muscles Flashcards

1
Q

Deltoid origin

A

Lateral one third of the clavicle, acromion, and spine of scapula

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2
Q

Deltoid insertion

A

Deltoid tuberosity

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3
Q

Deltoid actions

A

Abducts arm, anterior fibers flex and medially rotate arm, posterior fibers extend and laterally rotate arm

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4
Q

Deltoid innervation

A

Axillary nerve

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5
Q

Deltoid blood supply

A

Posterior circumflex humeral artery

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6
Q

Supraspinatus origin

A

Surpaspinous fossa

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7
Q

Supraspinatus insertion

A

Greater tubercle of the humerus

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8
Q

Supraspinatus actions

A

Abducts arm

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9
Q

Supraspinatous innervation

A

Suprascapular nerve

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10
Q

Supraspinatous blood supply

A

Suprascapular artery

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11
Q

Infraspinatous origin

A

Infraspinous fossa

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12
Q

Infraspinatous insertion

A

Greater tubercle of the humerus

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13
Q

Infraspinatous actions

A

Laterally rotates arm

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14
Q

Infraspinatous innervation

A

Suprascapular nerve

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15
Q

Infraspinatous blood supply

A

Suprascapular artery

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16
Q

Teres minor origin

A

Axillary border of the scapula

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17
Q

Teres minor insertion

A

Greater tubercle of the humerus

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18
Q

Teres minor actions

A

Laterally rotates arm

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19
Q

Teres minor innervation

A

Axillary nerve

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20
Q

Teres minor blood supply

A

Circumflex scapular artery

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21
Q

Teres major origin

A

Axillary border of the scapula

22
Q

Teres major insertion

A

Lesser tubercle of the humerus

23
Q

Teres major actions

A

Extends, adducts, and medially rotates arm

24
Q

Teres major innervation

A

Lower subscapular nerve

25
Q

Teres major blood supply

A

Circumflex scapular artery and thoracodorsal artery

26
Q

Subscapularis origin

A

Subscapular fossa

27
Q

Subscapularis insertion

A

Lesser tubercle of the humerus

28
Q

Subscapularis actions

A

Medially rotates the arm

29
Q

Subscapularis innervation

A

Upper and lower subscapular nerve

30
Q

Subscapularis blood supply

A

Subscapular artery

31
Q

Pectoralis major origin

A

Sternum, costal cartilages 2-6, clavicle

32
Q

Pectoralis major insertion

A

Lateral lip of intertubercular groove

33
Q

Pectoralis major actions

A

Adducts, medially rotates, flexes arm; extends flexed arm; depresses and protracts pectoral girdle

34
Q

Pectoralis major innervation

A

Medial and lateral pectoral nerve

35
Q

Pectoralis major blood supply

A

Thoracoacromial and lateral thoracic artery

36
Q

Pectoralis minor origin

A

Ribs 2-5

37
Q

Pectoralis minor insertion

A

Coracoid process of scapula

38
Q

Pectoralis minor actions

A

Depressed and protracts pectoral girdle

39
Q

Pectoralis minor innervation

A

Medial pectoral nerve

40
Q

Pectoralis minor blood supply

A

Thoracoacromial and lateral thoracic artery

41
Q

Subclavius origin

A

1st costal cartilage

42
Q

Subclavius insertion

A

Inferior surface of clavicle

43
Q

Subclavius actions

A

Depresses clavicle; resists lateral dislocation

44
Q

Subclavius innervation

A

Nerve to subclavius

45
Q

Subclavius blood supply

A

Thoracoacromial artery

46
Q

Serratus anterior origin

A

Ribs 1-9

47
Q

Serratus anterior insertion

A

Ventral surface of medial border of scapula

48
Q

Serratus anterior actions

A

Protracts and superiorly rotates scapula

49
Q

Serratus anterior innervation

A

Long thoracic nerve

50
Q

Serratus anterior blood supply

A

Lateral thoracic and sub scapular artery

Anatomy (6 decks)

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