Superficial Back and Shoulder Flashcards Preview

Term 1 Anatomy > Superficial Back and Shoulder > Flashcards

Flashcards in Superficial Back and Shoulder Deck (59):
1

How many sacral vertebrae?

5
fused

2

How many coccygeal vertebrae?

1-3
fused

3

What makes up the shoulder girldle?

Scapula and clavicle

4

Distal attachments of the Trapezius muscle

Spine of the scapula
Acromion
Lateral 1/3 of clavicle

5

Actions of the Trapezius muscle

Retracts
Elevates (shrugging) and
Depresses scapula

6

Innervation of the Trapezius muscle

Spinal accessory nerve
(Cranial nerve XI)

7

Arterial supply of the Trapezius muscle

Superficial branch of transverse cervical artery

8

Superficial branch of transverse cervical artery also supplies

Rhomboids

9

Rhomboids
Names
Where do they arise and attach?

Rhomboid major and minor
Arise from medial border of scapula
Attach to upper thoracic vertebrae

10

What can be used to differentiate the rhomboids?

The beginning of the spine of the scapula

11

Which rhomboid is located more inferiorly?

Rhomboid major

12

Nerve supply to the rhomboids

Dorsal scapular nerve
Comes primarily from cervical spinal nerve C5

13

Action of the rhomboids

Retraction and rotation of the scapula

14

Levator scapulae comes from

attaches to

the superior angle of the scapula and attaches into the sides (transverse processes) of cervical vertebrae

15

Function of levator scapulae

Elevates the scapula

16

Nerve supply of levator scapulae

Dorsal scapular nerve
Comes primarily from cervical spinal nerve C5

17

Test for rhomboids

Tell patients to put hands in gluteal region and move elbows close to each other

18

Triangle of auscultation

On medial side of inferior angle of scapula

19

Deltoid attachments

Same attachments as trapezius
Lateral 1/3 of clavicle
Acromion
Spine of scapula

20

Deltoid actions

1. Flexion (anterior) and abduction
2. Abduction
3. Extension (posterior) and abduction

Also medially and laterally rotates humerus

21

Deltoid does NOT participate in the abduction of the shoulder joint for

15 degrees

22

Deltoid test

Abduct the arm beyond 15 degrees against your hand

23

Abduction beyond 90 degrees must be accomplished by

rotation of the scapula

24

Serratus anterior
arises from
attaches to

arises from ribs 1-8 on the side
goes underneath the scapula and inserts on medial border

25

Serratus anterior actions

Holds scapula in place against thoracic wall

26

Winged scapula indicates loss of function of

Serratus anterior

27

Serratus anterior nerve supply

long thoracic nerve

C5, 6 and 7 wing your way to heaven

28

Winged Scapula test

Ask patient to push against wall
Normal- wont wing out

29

Full abduction muscles

Supraspinatus
Deltoid
Serratus anterior and trapezius

30

Supraspinatus abduction

0-15 degrees

31

Deltoid abduction

15-90 degrees

32

Serratus anterior and trapezius abduction

Rotation of scapula

33

Climbing muscles

Teres major and Latissimus dorsi

34

Teres major
Attachments

Attaches from lateral border of scapula to medial lip of bicipital groove on humerus

Attaches posteriorly

Round shape

35

Latissimus dorsi
Attachments

Attaches from dorsum of back (T6-L5 and lumbosacral fascia) to floor of bicipital groove

Attaches anteriorly

36

Climbing muscles actions

Important when you bring your body closer to your arms
Monkey bars
Cant use axillary crutches
These muscles may be used to adduct the arm and elevate the body
Medial rotation of the humerus

37

Latissimus dorsi innervation

Thoracodorsal nerve
Middle subscapular nerve

38

Teres major innervation

Lower subscapular nerve

39

Rotator cuff muscles

Supraspinatus
Infraspinatus
Teres minor
Subscapularis

40

What do the rotator cuff muscles do?

Surround the head of the humerus
Participate in the rotation of the glenohumeral joint

41

Subscapularis muscle
Attachments

On anterior surface of the scapula
Attaches to the lesser tuberosity of the humerus

42

Subscapularis muscle action

Medially rotates humerus

43

Subscapularis dislocation

Will become stretched and taut if the head of the humerus is dislocated posteriorly

44

Infraspinatus and teres minor location

Located on the posterior aspect and lateral border of the scapula

45

Infraspinatus and teres minor attachment

Attach into the greater tuberosity of the humerus

46

Infraspinatus and teres minor action

Lateral rotation of the humerus

47

Infraspinatus and teres minor dislocation

Will become stretched and taut if the head of the humerus is dislocated anteriorly

48

Supraspinatus
Rotation

does not participate in the rotation of the humerus

49

Supraspinatus location

Arises from within the supraspinous fossa

Its tendon will pass inferior to the acromion process and attach into the superior facet of the greater tuberosity of the humerus

50

Supraspinatus function

initiates the motion of abduction of the arm

initial phase 0-15 degrees

51

Subacromial bursa

positioned between the acromion and the supraspinatus muscle

protects the muscle from rubbing against the acromion process

52

Injuries of rotator cuff muscle

Each of the rotator cuff muscles may be stretched and torn if the head of the humerus is moved in the opposite direction

53

Posterior dislocation

Subscapularis gets stretched

54

Anterior dislocation

Infraspinatus gets stretched

55

Dislocation in the superior direction

Acromion process and the associated acromioclavicular ligaments prevent this

56

Most commonly torn rotator cuff muscle

Supraspinatus

57

Subacromial bursa
Location

positioned between the acromion and the tendon of supraspinatus

may be continuous with the subdeltoid bursa

58

Subdeltoid bursa
Location

Positioned between the greater tubercule of the humerus and the deltoid muscle

Terms used interchangeably

59

Subacromial bursa is in communication with

synovial sac of glenohumeral joint

may be a separate entity