Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Functional Anatomy > Shoulder Complex (2B) > Flashcards

Shoulder Complex (2B) Flashcards

1
Q

Attachments of pectoralis major

A
  • proximal = medial clavicle (clavicular head), sternum, upper ribs (sternal head)
  • distal = anterior/medial humerus
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Innervation of pectoralis major

A

Lateral and medial pectoral nerves

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Actions of pectoralis major

A

All fibers
- adduct the shoulder
- internally (medially) rotate the shoulder
- assist to elevate the thorax during forced inhalation (with the arm fixed)
Clavicular fibers
- flex the shoulder
- horizontally adduct the shoulder
Sternocostal fibers
- extend the shoulder

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Attachments of pectoralis minor

A
  • proximal = 3-5th ribs (middle ribs)
  • distal = coracoid process
  • can move either attachment
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Innervation of pectoralis minor

A

Medial pectoral nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Actions of pectoralis minor

A
  • depression the scapula
  • abduction the scapula
  • downwardly rotate the scapula
  • assist to elevate the thorax during force inhalation (with the scapula fixed)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Attachments of coracobrachialis

A
  • proximal = coracoid process
  • distal = anterior/medial humerus
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Innervation of coracobrachialis

A

Musculocutaneous nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Actions of coracobrachialis

A
  • flex the shoulder
  • adduct the shoulder
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Attachments of deltoid

A
  • proximal = lateral clavicle, acromion, lateral spine of the scapula
  • distal = lateral humerus
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Innervation of deltoid

A

Axillary nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Actions of deltoid

A

All fibers
- abduct the shoulder
Anterior fibers
- flex the shoulder
- internally (medially) rotate the shoulder
- horizontally adduct the shoulder
Posterior fibers
- extend the shoulder
- externally (laterally) rotate the shoulder
- horizontally abduct the shoulder

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Muscles of rotator cuff

A
  • SITS
  • supraspinatus
  • infraspinatus
  • teres minor
  • subscapularus
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Attachments of supraspinatus

A
  • proximal = supraspinous fossa
  • distal = lateral humerus
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Innervation of supraspinatus

A

Suprascapular nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Actions of supraspinatus

A
  • abduct the shoulder
  • stabilize the head of humerus in glenoid cavity
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Attachments of infraspinatus

A
  • proximal = infraspinous fossa
  • distal = posterior/lateral humerus
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Innervation of infraspinatus

A

Suprascapular nerve

19
Q

Actions of infraspinatus

A
  • externally (laterally) rotate the shoulder
  • adduct the shoulder
  • stabilize the head of humerus in glenoid cavity
20
Q

Attachments of teres minor

A
  • proximal = lateral border of scapula
  • distal = posterior/lateral humerus
21
Q

Innervation of teres minor

A

Axillary nerve

22
Q

Actions of teres minor

A
  • externally (laterally) rotate the shoulder
  • adduct the shoulder
  • stabilize the head of humerus in glenoid cavity
23
Q

Attachments of subscapularis

A
  • proximal = subscapular fossa
  • distal = anterior/lateral humerus
24
Q

Innervation of subscapularis

A

Upper and lower subscapular nerve

25
Q

Actions of subscapularis

A
  • internally (medially) rotate the shoulder
  • stabilize the head of humerus in glenoid cavity
26
Q

Attachments of teres major

A
  • proximal = lower 1/3 of lateral border of scapula
  • distal = anterior/medial humerus
27
Q

Innervation of teres major

A

Lower subscapular nerve

28
Q

Actions of teres major

A
  • extend the shoulder
  • adduct the shoulder
  • internally (medially) rotate the shoulder
29
Q

Attachments of latissimus dorsi

A
  • proximal = inferior angle of scapula, spinous processes of inferior T-spine, and thoracolumbar fascia/posterior iliac crest
  • distal = anterior/medial humerus
30
Q

Innervation of latissimus dorsi

A

Thoracodorsal nerve

31
Q

Actions of latissimus dorsi

A
  • extend the shoulder
  • adduct the shoulder
  • internally (medially) rotate the shoulder
32
Q

Attachments of trapezius

A
  • proximal = occiput of scull, ligamentum nuchae, and C7-T12 spinous processes
  • distal = lateral 1/3 clavicle, spine of scapula, and acromion
33
Q

Innervation of trapezius

A

Cranial nerve (XI - Accessory)

34
Q

Actions of trapezius

A

Upper fibers
- extend the head and neck
Upper fibers (unilaterally)
- laterally flex the head and neck to the same side
- rotate the head and neck to the opposite side
- elevate the scapula
- upwardly rotate the scapula
Middle fibers
- adduct scapula
- stabilize scapula
Lower fibers
- depression scapula
- upwardly rotate the scapula

35
Q

Attachments of levator scapula

A
  • proximal = transverse processes of C1-4
  • distal = medial border of scapula
36
Q

Innervation of levator scapula

A

Dorsal scapular nerve

37
Q

Actions of levator scapula

A

Unilaterally
- elevate the scapula
- downwardly rotate the scapula
- laterally flex the head and the neck
- rotate the head and neck to the same side
Bilaterally
- extend the head and neck

38
Q

Attachments of rhomboid major and minor

A
  • proximal = spinous processes of C7-T5
  • distal = medial border of scapula
39
Q

Innervation of rhomboid major and minor

A

Dorsal scapular nerve

40
Q

Actions of rhomboid major and minor

A
  • adduct the scapula
  • elevate the scapula
  • downwardly rotate the scapula
41
Q

Attachments of serratus anterior

A
  • proximal = upper ribs
  • distal = medial border of scapula
42
Q

Innervation of serratus anterior

A

Long thoracic nerve

43
Q

Actions of serratus anterior

A

With the origin fixed
- abduct the scapula
- upwardly rotate the scapula
- depression the scapula
- hold the medial border of the scapula against the rib cage
With the scapula fixed
- may act to elevate the thorax during forced inhalation

Functional Anatomy (8 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions