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Unit 2 MTP > Muscle Chart > Flashcards

Muscle Chart Flashcards

1
Q

Serratus anterior origin

A

Lateral parts of rib 1-8

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2
Q

Serratus anterior insertion

A

Medial border of the scapula

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3
Q

Serratus anterior action

A

protract the scapula
Hold scapula against thoracic wall

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4
Q

Serratus anterior innervation

A

Long thoracic n (C5-C7)

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5
Q

Serratus anterior artery

A

Lateral thoracic a
Superior thoracic a

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6
Q

Subclavius origin

A

First rib and its cartilage

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7
Q

Subclavius insertion

A

Inferior surface of the clavicle

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8
Q

Subclavius action

A

Anchors and depresses clavicle

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9
Q

Subclavius innervation

A

Nerve to the subclavius C5

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10
Q

Subclavius artery

A

Clavicular branch of Thoracoacromial a

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11
Q

Pectoralis Major origin

A

Sternum
Superior 6 costal cartilages
Aponeurosis of external abdominal oblique muscle

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12
Q

Pectoralis Major insertion

A

Lateral lip of intertubercular sulcus of the humerus

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13
Q

Pectoralis Major action

A

Flexion, medial rotation, and adduction of the humerus

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14
Q

Pectoralis Major innervation

A

Clavicular head: Lateral pectoral n (C5-7)
Subcostal head: Medial pectoral n (C8-T1)

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15
Q

Pectoralis Major artery

A

Pectoral branch of thoracoacromial a

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16
Q

Pectoralis minor origin

A

Ribs 3-5 near their costal cartilage

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17
Q

Pectoralis minor insertion

A

Coracoid process of the scapula

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18
Q

Pectoralis minor action

A

Pull the scapula inferiorly and anteriorly against thoracic wall

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19
Q

Pectoralis minor innervation

A

Medial pectoral n (C8-T1)

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20
Q

Pectoralis minor artery

A

Pectoral branch of thoracoacromial a

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21
Q

Supraspinatus origin

A

Supraspinous fossa

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22
Q

Supraspinatus insertion

A

greater tubercle of the humerus (highest facet)

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23
Q

Supraspinatus action

A

Initiates first 10-15 degrees of abduction of the arm
Helps hold humerus into joint
Helps extension of arm

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24
Q

Supraspinatus innervation

A

Suprascapular n (C4-6)

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25
Q

Supraspinatus artery

A

Suprascapular a

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26
Q

Infraspinatus origin

A

Infraspinatus fossa

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27
Q

Infraspinatus insertion

A

greater tubercle of the humerus (middle facet)

28
Q

Infraspinatus action

A

Laterally rotates the arm
Helps hold humerus into joint
Helps extension of arm

29
Q

Infraspinatus innervation

A

Suprascapular n (C4-6)

30
Q

Infraspinatus artery

A

Suprascapular a
Circumflex scapular a

31
Q

Teres minor origin

A

Middle 1/3 of lateral border of the scapula

32
Q

Teres minor insertion

A

greater tubercle of the humerus (inferior facet)

33
Q

Teres minor action

A

Laterally rotates the arm
Helps hold humerus into joint
Helps extension of arm

34
Q

Teres minor innervation

A

Axillary n (C5-C6)

35
Q

Teres minor artery

A

Circumflex scapular a
Posterior circumflex humeral a

36
Q

Subscapularis origin

A

Subscapular fossa

37
Q

Subscapularis insertion

A

Lesser tubercle of humerus

38
Q

Subscapularis action

A

Adducts and medially rotates the arm
Helps hold humerus into joint
Helps extension of arm

39
Q

Subscapularis innervation

A

Upper and lower subscapular n (C5-C7)

40
Q

Subscapularis artery

A

Subscapular a

41
Q

Teres Major origin

A

dorsal surface of the inferior angle of the scapula

42
Q

Teres Major insertion

A

Medial crest of the intertubercular sulcus of the humerus

43
Q

Teres Major action

A

Adducts and medially rotates the arm
Assists Lat Dorsi in extension of flexed arm

44
Q

Teres Major innervation

A

Lower subscapular n (C5-C6)

45
Q

Teres Major artery

A

Thoracodorsal branch of subscapular a
Posterior circumflex humeral a

46
Q

Deltoid origin

A

Lateral 1/3 of the clavicle
Acromion
Lower lip of the crest of the spine of the scapula

47
Q

Deltoid insertion

A

Deltoid tuberosity of the humerus

48
Q

Deltoid action

A

Clavicular head: flexes and medially rotates arm
Acromial head: abducts arm
Scapular head: Extends and laterally rotates arm

Stabilizes glenohumeral joint during heavy lifting with adducted arm

49
Q

Deltoid innervation

A

Axillary n (C5-C6)

50
Q

Deltoid artery

A

Posterior circumflex humeral a
Anterior circumflex humeral a
Acromial branch of thoracoacromial a
Deltoid branch of thoracoacromial a
Subscapular a

51
Q

What three muscles insert on the greater tubercle of the humerus?

A

Supraspinatus - highest facet
Infraspinatus - middle facet
teres minor - lowest facet

52
Q

What are the muscles of the rotator cuff?

A

Supraspinatus
Infraspinatus
Teres Minor
Subscapularis

53
Q

Nerves of the pectoral region and rotator cuff

A
  1. Long thoracic n
  2. Nerve to subclavius
  3. Medial pectoral n
  4. Lateral pectoral n
  5. Suprascapular n
  6. Axillary n
  7. Upper subscapular n
  8. Lower subscapular n
54
Q

Nerves of the arm

A
  1. Musculocutaneous n
  2. Radial n
    (50/50)
55
Q

Nerves of the anterior forearm

A
  1. Median n (50%)
  2. Ulnar n (FC Ulnaris, FD Profundis)
  3. Anterior interosseous n
56
Q

Nerves of the posterior forearm

A
  1. Deep radial n (80%)
  2. Radial n (brachioradialis, ECRL)
57
Q

Nerves of the hand

A
  1. Deep branch of the ulnar n (~70%)
  2. Recurrent branch of median n
  3. Superficial branch of ulnar n
  4. Palmar digital n
58
Q

Radial n innervation

A

Triceps brachii
Brachialis (w/MSC)
Brachioradialis
Anconeus
Extensor carpi radialis longus

59
Q

Deep radial n innervation

A

Extensor carpi radialis brevis
Supinator
Extensor carpi ulnaris
AbPL
EPL
EPB
Extensor indicis
ED
EDM

60
Q

Median n innervation

A

Flexor carpi radialis (C6, C7)

Palmaris longus (C7, C8)

Pronator teres (C6, C7)

Flexor digitorum Superficialis (C6-C8)

61
Q

Ulnar n innervation

A

Flexor digitorum profundus (medial part)

Flexor carpi ulnaris

62
Q

Anterior interosseous innervation

A

Flexor digitorum profundus (lateral part)

Pronator quadratus

63
Q

Deep branch of ulnar n innervation

A

Abductor digiti minimi
Flexor digiti minimi
Opponens digiti minimi
Adductor pollicis
Flexor pollicis brevis - deep head
Lumbricals (medial half)
Palmar interosseous
Dorsal interosseous

64
Q

Recurrent branch of median n innervation

A

Abductor pollicis brevis
Flexor pollicis brevis - superficial head
Opponens pollicis
Lumbricals (lateral half)

65
Q

Superficial branch of ulnar n innervation

A

palmaris brevis

Unit 2 MTP (5 decks)

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