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Anatomy Lab > Exam 1 - Back Muscles/Rotator cuff > Flashcards

Exam 1 - Back Muscles/Rotator cuff Flashcards

1
Q

Trapezius Attachments

A
  • Superior nuchal line
  • external occipital protuberance
  • nuchal ligament
  • spinous processes of C7-T12
  • lateral one third of clavicle
  • acromion process of scapula
  • spine of scapula
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2
Q

Trapezius Innervation

A

Spinal Accessory nerve

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3
Q

Vessels supplying trapezius

A

Superficial branches of transverse cervical artery and vein

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4
Q

Actions of trapezius

A
  • Assists in rotating the scapula during abduction of humerus
  • Upper fibers elevate and upward rotate
  • Retract scapula
  • Lower fibers depress scapula and downward rotate
  • Extend vertebral column
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5
Q

Latissimus dorsi attachments

A
  • Spinous processes of T7 to lumbar and sacrum
  • Iliac crest
  • Ribs X to XII (lower 3-4)
  • Intertubercular groove of humerus
  • Inferior angle of scapula
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6
Q

Innervation of latissimus dorsi

A

Thoracodorsal nerve

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7
Q

Vessels supplying latissimus dorsi

A

Thoracodorsal artery and vein

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8
Q

Actions of latissimus dorsi

A
  • *Extends arm/shoulder
  • Adducts
  • Medially rotates humerus
  • Medial rotator of shoulder
  • Indirect depressor/inferior rotator of scapula
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9
Q

Levator scapulae attachments

A
  • Transverse processes of C1 to CIV

- Upper portion of medial border of scapula between superior angle and spine

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10
Q

Innervations of levator scapulae

A

C3, C4, C5 ventral rami nerves

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11
Q

Vessels supplying levator scapulae

A

Dorsal scapular nerve (aka deep branch of transverse cervical artery

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12
Q

Action of levator scapulae

A
  • Elevates scapula
  • Retracts (adducts)
  • Downward rotates scapula
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13
Q

Attachments of Rhomboid major

A
  • Spinous processes of TII to TV

* Medial border of scapula between spine and inferior angle.

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14
Q

Innervation of Rhomboid major

A

Dorsoscapular nerve

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15
Q

vessel of rhomboid major

A

dorsoscapular artery

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16
Q

actions of rhomboid major

A
  • Retracts scapula
  • And elevates scapula
  • Downward rotates scapula
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17
Q

Rhomboid minor attachments

A
  • Lower portion of ligamentum nuchae
  • Spinous processes of CVVII and TVI
  • Medial border of scapula at spine of scapula
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18
Q

innervation of rhombodi minor

A

dorsoscapular nerve

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19
Q

Vessels of rhomboid minor

A

dorsoscapular artery and vein

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20
Q

actions of rhomboid minor

A
  • retracts scapula
  • elevates scapula
  • downward rotates scapula
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21
Q

Attachments of teres major

A
  • Inferior lateral aspect of the scapula

* Proximal lateral humerus

22
Q

innervation of teres major

A

• Lower subscapular nerve

23
Q

action of teres major

A

Medial rotation and extension of the arm at the glenohumeral joint
-shoulder adduction

24
Q

Attachment of deltoid

A
  • Deltoid tuberosity of humerus
  • Spine of the scapula
  • Acromion
  • Anterior border of lateral one-third clavicle
25
innervation of deltoid
axillary nerve
26
Vessels of deltoid
* Posterior humeral circumflex artery and vein | * Thoracoacromial trunk (pectoral, clavicular, acromial, and deltoid branches)
27
actions of deltoid
* Abduct limb * Anterior head: flexor and medial rotator of limb. * Posterior head: extend and laterally rotate
28
attachments of serratus anterior
- Vertebral border of scapula | - Ribs
29
Innervation of serratus anterior
Long thoracic nerve
30
Vessels of serratus anterior
lateral thoracic artery and vein
31
actions of serratus anterior
* *stabilizing the scapula * *scapular protraction * Prevents scapular winging * Accessory breathing muscle (bent over breathing)
32
Attachments of pectoralis major
•crest of the greater tubercle of the humerus - manubrium - medial half of clavicle - body of the sternum - costal cartilages of ribs 1-6
33
Innervation of pectoralis major
• Medial and lateral pectoral nerves
34
Vessels supplying pectoralis major
• Thoracoacromial trunk (pectoral, clavicular, acromial, and deltoid branches)
35
Actions of pectoralis major
* Abduction of humerus * Medial rotator of humerus * Flexor of extended limb * Extender of flexed limb * Stabilize pectoral girdle * Accessory breathing muscle
36
Attachment of pectoralis minor
- Rib 3, 4, 5 | - Corocoid process of scapula
37
Innervation of pectoralis minor
• Medial and lateral pectoral nerve
38
Vessels of pectoralis minor
• Thoracoacromial trunk (pectoral, clavicular, acromial, and deltoid branches)
39
Actions of pectoralis mninor
* Protract scapula * Depress scapula * Downward rotate scapula * If you lock out pectoral girdle it is an accessory breathing muscle
40
Attachment of supraspinatus
* Supraspionous fossa of the scapula | * Superior aspect of the greater tuberosity of the humerus
41
Innervations of supraspinatus
Suprascapular nerve
42
Action of supraspinatus
initiates abduction
43
Attachment of infraspinatus
* Infraspinous fossa | * Greater tuberosity of the humerus
44
Innervation of infraspinatus
suprascapular nerve
45
Vessels supplying infraspinatus
suprascapular artery and vein
46
Action of infraspinatus
Lateral rotation of arm at the glenohumeral joint
47
Attachment of subscapularis
* Subscapular fossa | * Lesser tuberosity of humerus
48
Innervation of subscapularis
Subscapular nerve (upper and lower)
49
Action of subscapularis
Medial rotation of the arm at the glenohumeral joint
50
Attachment of teres minor
* Superior lateral aspect of the scapula | * Greater tuberosity of humerus
51
Innervation of teres minor
axillary nerve
52
action of teres minor
-Lateral rotatoin of arm at the glenohumeral joint

Anatomy Lab (5 decks)

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