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MSKI > Scapula, Axillary, Posterior Triangle, and Vertebral Column Muscle Charts > Flashcards

Scapula, Axillary, Posterior Triangle, and Vertebral Column Muscle Charts Flashcards

1
Q

Spinal accessory nerve (CNXI) and C3, C4 spinal nerves

A

Trapezius

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2
Q

Thoracodorsal nerve

A

Latissimus Dorsi

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3
Q

Dorsal scapular nerve and C3, C4 spinal nerves

A

Levator Scapulae

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4
Q

Dorsal scapular nerve

A

Rhomboid Major or Rhomboid Minor

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5
Q

Long thoracic nerve

A

Serratus Anterior

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6
Q

Axillary nerve

A

Deltoid and Teres Minor

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7
Q

Suprascapular nerve

A

Supraspinatus or Infraspinatus

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8
Q

Lower subscapular nerve

A

Teres Major

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9
Q

Radial nerve

A

Triceps Brachii

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10
Q

Upper and lower subscapular nerves

A

Subscapularis

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11
Q

Descending part elevates; ascending part depresses; and middle part retracts scapula; descending and ascending parts act together to rotate glenoid cavity superiorly

A

Trapezius

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12
Q

Latissimus Dorsi action

A

Extends, adducts and medially rotates humerus; raises body toward arms during climbing

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13
Q

Elevates scapula and rotates glenoid cavity inferiorly by rotating scapula

A

Levator Scapulae

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14
Q

Retract scapula and rotate glenoid cavity inferiorly; fix scapula to thoracic wall

A

Rhomboid Major and Rhomboid Minor

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15
Q

Protracts scapula and holds it against thoracic wall; rotates scapula

A

Serratus Anterior

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16
Q

Deltoid action

A

Clavicular (anterior) part: flexes and medially rotates arm;
Acromial (middle) part: abducts arm;
Spinal (posterior) part: extends and laterally rotates arm

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17
Q

Initiates and assists deltoid in abduction of arm and acts with rotator cuff muscles

A

Supraspinatous

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18
Q

Laterally rotates arm; acts with rotator cuff muscles

A

Infraspinatus or Teres Minor

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19
Q

Adducts and medially rotates arm

A

Teres Major

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20
Q

Chief extensor of forearm; long head resists dislocation of humerus (especially important during adduction)

A

Triceps Brachii

21
Q

Subscapularis action

A

Medially rotates arm; as part of rotator cuff, helps hold head of humerus in glenoid cavity

22
Q

Parts of Rotator Cuff

A

Supraspinatus, Infraspinatus, Teres Minor, Subscapularis

23
Q

Lateral and medial pectoral nerves

A

Pectoralis Major

24
Q

Medial pectoral nerve

A

Pectoralis Minor

25
Q

Nerve to subclavius

A

Subclavius

26
Q

Adducts and medially rotates humerus; draws scapula anteriorly and inferiorly; acting alone-clavicular head flexes humerus and sternocostal head extends it from the flexed position

A

Pectoralis Major

27
Q

Pectoralis Minor action

A

Stabilizes scapula drawing it inferiorly and anteriorly against thoracic wall

28
Q

Anchors and depresses clavicle

A

Subclavius

29
Q

Sternocleidomastoid (innervation)

A

Spinal Accessory Nerve (XI)

30
Q

Facial nerve (CN VII)

A

Platysma

31
Q

Semispinalis Capitis (innervation)

A

Dorsal rami of spinal nerves

32
Q

Splenius Capitis (innervation)

A

Dorsal rami of middle cervical spinal nerves

33
Q

Anterior Scalene (innervation)

A

C4-C6 spinal nerves

34
Q

Middle Scalene (innervation)

A

Anterior rami of cervical spinal nerves

35
Q

Posterior Scalene (Innervation)

A

Anterior rami of cervical spinal nerves C7 and C8

36
Q

Ansa cervicalis

A

Omohyoid

37
Q

Depresses mandible (against resistance); tenses skin of inferior face and neck

A

Platysma

38
Q

Semispinalis Capitis action

A

Acting bilaterally: extends head and neck; Acting unilaterally: rotation of head and neck to contralateral side

39
Q

Splenius Capitis action

A

Laterally flexes and rotates head and neck to same side; acting bilaterally extends head and neck

40
Q

Flex head (Lateral cervical spine flexion)

A

Anterior Scalene

41
Q

Flexes neck laterally; elevates 1st rib during forced inspiration

A

Middle Scalene

42
Q

Flexes neck laterally; elevates 2nd rib during forced inspiration

A

Posterior Scalene

43
Q

Depresses, retracts and steadies hyoid bone

A

Omohyoid

44
Q

Erector spinae (Spinalis, Longissimus, and Iliocostalis) innervation

A

Dorsal Rami of Spinal Nerves

45
Q

Erector Spinae (Spinalis, Longissimus, Iliocostalis) action

A

Acting bilaterally: extend vertebral column and head, as back is flexed, control movement via eccentric contraction; Acting unilaterally: laterally flex vertebral column

46
Q

Multifidus (Transversospinails) action

A

Stabilizes vertebrae during local movements of vertebral column;

47
Q

Rotatores (Transversospinalis) action

A

Stabilize vertebrae and assist with local extension and rotatory movements of vertebral column

48
Q

Extends head, thoracic and cervical regions of vertebral column and rotates them contralaterally

A

Semispinalis (Transversospinalis)

49
Q

Transversospinalis (Semispinalis, Multifidus, Rotatores) innervation

A

Dorsal rami of spinal nerves

MSKI (7 decks)

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