Brainscape's Knowledge GenomeTM

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


See full index

MSS - MSK Exam 2 > Shoulder Region > Flashcards

Shoulder Region Flashcards

1
Q

attachment of deltoid

A

origin:
lateral 1/3 anterior border of clavicle, acromion, spine of scapula

insertion:
deltoid tuberosity of humerus

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

action of deltoid?

A

anterior - flexes, medially rotates
posterior - extends, laterally rotates

anterior, middle, posterior - abducts

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

innervation of deltoid?

A

axillary nerve

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

subacromial bursa

A

or subdeltoid bursa

directly deep to deltoid and superficial to supraspinatus

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

attachment of suspraspinatus

A

origin:
supraspinous fossa of scapula

insertion:
highest facet, posterior surface greater tubercle of humerus

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

action of supraspinatus

A

initiates abductino of humerus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

innervation of supraspinatus

A

suprascapular nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

what initiates abduction?

A

supraspinatus

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

attachments of infraspinatus

A

origin:
infraspinous fossa of scapula

insertion:
middle facet, posterior surface greater tubercle of humerus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

action of infraspinatus

A

lateral rotation of humerus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

innervation of infraspinatus

A

suprascapular nerve

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

what do you lose first, cutaneous or motor?

A

cutaneous innervation

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

superior transverse scapular ligament

A

closes off the suprascapular notch

  • suprascapular artery passes superior
  • suprascapular nerve passes inferior

both structures supply supraspinatus and send branches around neck of acromion via great scapular notch to the infraspinatus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

teres major attachments?

A

origin:
dorsal surface, inferior angle of scapula

insertion:
crest of lesser tubercle of humerus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

action of teres major?

A

extension, adduction, medial rotation

same as latissimus, but better in horizontal plane

latissimus better in vertical plane

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

innervation of teres major?

A

lower subscapular nerve

17
Q

attachments of teres minor?

A

origin:
middle 1/3 to upper 2/3 of lateral border of scapula

insertion:
lowest facet, posterior surface greater tubercle of humerus

18
Q

action of teres minor

A

alteral rotation of humerus

19
Q

innervation of teres minor

A

axillary nerve

20
Q

tendon of supraspinatus, infraspinatus, teres minor?

A

blend with capsule of glenohumeral joint and strengthen superiorly and posteriorly

21
Q

rotator cuff

A

subscapularis, infraspinatus, teres minor, supraspinatus

holds humerus in glenoid cavity in ALL ranges of motion

22
Q

serratus anterior attachments

A

origin:
outer surface of ribs 1-8 or 9

insertion:
vertebral costal surface of scapula from superior to inferior angle

23
Q

action of serratus anterior

A

protracts scapula, upward rotation of glenoid cavity, fixates scapula to thoracic wall

also accessory to respiration if scapula fixed

24
Q

innervation of serratus anterior

A

long thoracic nerve

-only nerve that is superficial to the muscle it innervates

makes injury common

25
Q

winged scapula?

A

injury to long thoracic nerve paralyzes serratus anterior

elevation of scapula away from body along its medial border and inferior angle

inability to completely abduct upper limb, or push upper limb forward against resistance

26
Q

quadrangular space

A

superior - teres minor
inferior - teres major
medial - long head, triceps muscle
lateral - humerus

27
Q

contents of quadrangular space?

A

axillary nerve

posterior humeral circumflex artery (branch of 3rd portion of axillary)

28
Q

triangular space?

A

superior - teres minor
inferior - teres major
lateral - long head triceps

29
Q

contents of triangular space?

A

circumflex scapular artery

-branch of subscapular artery from 3rd portion of axillary

30
Q

scapular anastomosis

A

blockage of axillary artery can result in flow reversal within branches of subclavian and axillary artery (no valves)

31
Q

anastomoses of scapular?

A

suprascapular and transverse cervical anastomose with circumflex scapular and thoracodorsal artery

acromial branch of thoracoacromial anastomose with circumflex humeral artery loop

transverse cervical artery anasatomose with branches intercostal arteries

MSS - MSK Exam 2 (13 decks)

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