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Gross Anatomy: Unit Two. > Anterior chest, arm and review muscles > Flashcards

Anterior chest, arm and review muscles Flashcards

1
Q

supraspinous origin

A

suprascapular fossa of the scapula

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2
Q

supraspinous insertion

A

superior facet of the greater tubercle of the humerus

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3
Q

supraspinatus innervation

A

suprascapular nerve (C4, C5, C6)

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4
Q

supraspinatus action

A

initates and assits the deltoid with abduction of the shoulder, acts with other rotator cuff muscles

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5
Q

infraspinatus origin

A

infrascapular fossa of the scapula

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6
Q

infraspinatus insertion

A

middle facet of the greater tubercle of the humerus

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7
Q

infraspinatus innervation

A

suprascapular nerve (C4,C5, C6)

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8
Q

infraspinatus action

A

laterally rotate the shoulder joint, helps hold the humeral head in cavity

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9
Q

trapezuis origin and insertion

A

origin: nuchal ligament, spinous processes of C7-T12, Medial 3rd of Superior Nuchal line, External Occipital Proturbernce
insertion: Acromin and Spine of the Scapula and the lateral clavicle

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10
Q

trapezuis innervation and action

A 
innervation: spinal accessory nerve (CN XI) 
Action:
    Decending fibers: elevates scapula
    Midde Fibers: depresses scapula
    Ascending fibers: retract scapula
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11
Q

Rhomboid Major and Minor origin

A

Major: Spinous processes of T2-T5
Minor: Nuchal ligament, Spinous processes of C7-T1

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12
Q

Rhomboid Major and Minor insertion

A

Minor: at the root of the spine of the scapula on the medial border
Major: below the spine of the scapula on the medial border (to the inferior angle)

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13
Q

Rhomboid Major and Minor innervation and action

A

Major and Minor: Dorsal-scapular Nerve (C5)

retracts the scapula

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14
Q

Levator Scapulae Origin

A

posterior tubercles of transverse processes of C1-C4

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15
Q

Levator Scapulae insertion

A

attaches above the spine of the scapula on the medial border

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16
Q

Levator Scapulae innervation and action

A

Dorsal-scapular nerve

elevates scapula

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17
Q

Subscapularis origin

A

on the subscapular fossa on the anterior scapula

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18
Q

subscapularis insertion

A

lesser tubercle of the humerus

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19
Q

subscapularis innervation

A

Upper and Lower Subscapular Nerves (C5,C6,C7)

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20
Q

teres minor origin

A

middle part of the lateral border of the scapula

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21
Q

teres minor insertion

A

inferior facet of the greater tubercle of the humerus

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22
Q

teres minor innervation

A

Axillary Nerve (C5, C6)

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23
Q

teres minor action

A

laterally rotate the shoulder joint, and help to hold the humeral head in the cavity

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24
Q

teres major origin

A

inferior lateral border of the scapula and posterior surface of the inferior border of the scapula

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25
Q

teres major insertion

A

medial lip of the intertubercular sucus of the humerus

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26
Q

teres major innveration

A

lower subscapular nerve (C5, C6)

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27
Q

teres major action

A

adduct and medially rotates the shoulder joint

28
Q

Deltoid origin

A

lateral 3rd of the clavicle

Acromion and spine of the scapula

29
Q

Deltoid insertion

A

Deltoid tuberosity of the humerus

30
Q

Deltoid innervation

A

Axillary Nerve (C5, C6)

31
Q

Deltoid Action

A

Anterior: flexes and medially rotates the shoulder joint
Middle: abducts shoulder joint
Posterior: extends and laterally rotates shoulder joint

when they all work the arm get lifted all the way up

32
Q

Subclavius origin

A

Junction of the 1st rib and the costal cartilage

33
Q

Subclavius insertion

A

Anterior surface of the medial border of the scapula

34
Q

Subclavius innervation

A

Subclavin nerve (C5,C6)

35
Q

Subclavius action

A

Anchors the depresses the clavicle

36
Q

Latissimus Dorsi origin

A

Spinous process of inferior 6 thoracic
Thoracolumbar fascia
Iliac crest
Inferior 3-4 ribs

37
Q

Latissimus Dorsi insertion

A

Inter tubercular sucus of the humerus

38
Q

Latissimus dorsi innervation

A

Thoracodorsal nerve (C5,6,7)

39
Q

Latissimus Dorsi action

A

Extends, adducts, and medially rotates the shoulder

40
Q

Pectoralis Major Origin

A

two heads:
clavicular head: anterior surface for the medial half of the clavicle
sternocostal head: anterior septum, superior 6 costal cartilages and the aponeurosis of external oblique muscle

41
Q

Pectoralis Major Insertion

A

lateral lip of the intertubercule sucus of the humerus

42
Q

Pectoralis Major innervation

A

Lateral and Medial Pectoral Nerves
Clavicular head: C5, C6
Sterno-head: C7,C8,T1

43
Q

Pectoralis Major action

A

adducts and medially rotates the shoulder joint
draws the scapula anteriorly and inferiorly
*When it acts alone the clavicular head flexes and the sterno head extends from a flexed position

44
Q

Pectoralis Minor origin

A

3rd and 5th ribs near the costal cartilages

45
Q

Pectoralis Minor insertion

A

Medial and Superior Surface of the Coracoid Porcess of Scapula

46
Q

Pectoralis Minor innervation

A

Medial Pectoral Nerve (C8,T1)

47
Q

Pectoralis Minor action

A

Stablizes the scapula by drawing it against the thoracic wall

48
Q

Serratus Anterior origin

A

external surface of the lateral parts of the 1st and 8th ribs

49
Q

Serratus Anterior insertion

A

anterior surface of the medial border of the scapula

50
Q

Serratus Anterior innervation

A

long thoracic nerve (C5, C6, C7)

51
Q

Serratus Anterior action

A

Protracts the scapula
Hold the scapula to the thoracic wall
Rotates the scapula

52
Q

Sternocleidomastoid origin

A

Mastoid process of he temporal bone

Superior nuchal line

53
Q

Sternocleidomastoid insertion

A

There is a sterno head and a clavicular head

54
Q

Sternocleidomastoid innervation

A

spinal accessory nerve (CN XI)

55
Q

Sternocleidomastoid action

A

Unilateral: tilts the head the same side and rotates face superiorly towards opposite side

Bilaterally: extends the neck to AO joint, flexes head to the sternum

56
Q

Scalene posterior origin

A

Posterior tubercles of the transverse processes of C4-C6

57
Q

Scalenes posterior insertion

A

2nd rib

58
Q

Scalenes posterior innervation

A

Anterior rami of c7 and c8

59
Q

All the scalenes motion

A

Lateral flex the neck, and elevates the rib they attach to

60
Q

Scalenes middle origin

A

Posterior tubercles of the transverse processes of c4-7

61
Q

Scalenes middle insertion

A

First rib

62
Q

Scalenes middle innervation

A

Anterior rami

63
Q

Scalenes anterior origin

A

Anterior tubercles of C3-6

64
Q

Scalenes anterior insertion.

A

First rib

65
Q

Scalenes anterior innervation

A

Cervical spinal nerves of c4-6

66
Q

Subscapularis action

A

Medial rotates the shoulder

Adducts the shoulder

Gross Anatomy: Unit Two. (10 decks)

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