Scapula Flashcards Preview

► Med Misc 25 > Scapula > Flashcards

Flashcards in Scapula Deck (50):
1

What is the scapula also known as?

The shoulder blade

2

What does the scapula articulate with?

The humerus 
The clavicle

3

Where does the scapula articulate with the humerus?

At the glenohumeral joint

4

Where does the scapula articulate with the clavicle?

At the acromioclavicular joint

5

What does the scapula connect?

The upper limb to the trunk

6

What shape is the scapula?

Triangular, flat

7

What does the scapula act as?

The site of attachment for 17 muscles

8

What is the anterior surface of the scapula termed?

Costal

9

Why is the anterior surface termed costal?

Because it’s the side facing the ribcage

10

What does the costal surface of the scapula covering most of its surface?

A concave depression, called the subscapular fossa

11

What originates from the subscapular fossa?

The subscapularis muscle

12

What is the subscapular fossa?

One of the rotator cuff muscles

13

What originates from the superolateral surface of the costal scapula?

The coracoid process

14

What is the corocoid process?

A hook-like projection

15

Where does the coracoid process lie?

Just under the clavicle

16

Why is the coracoid process significant?

The short head of the biceps brachii and pectoralis minor attach here 
The coracobrachialis muscle originates from this projection

17

What does the lateral surface of the scapula face?

The humerus

18

What is the lateral surface of the scapula the site of?

The glenohumeral joint 
Various muscle attachments

19

What is the glenoid fossa?

A shallow cavity

20

What is the purpose of the glenoid fossa?

It articulates with the humerus to form the glenohumeral joint

21

What part of the lateral surface of the scapula is important clinically?

The superior part

22

Why is the superior part of the lateral surface of the scapula important clinically?

As it articulates with the humerus to make up the shoulder joint, or glenohumeral joint

23

What is the supraglenoid tubercle?

A roughening immediately superior to the glenoid fossa

24

What is the importance of the supraglenoid tubercle?

It is the place of attachment of the long head of the biceps brachii

25

What is the infraglenoid tubercle?

A roughening immediately inferior to the glenoid fossa

26

What is the importance of the infraglenoid tubercle?

It is the place of attachment of the long head of the triceps brachii

27

Where does the posterior surface of the scapula face?

Outwards

28

What is the posterior surface of the scapula the site of?

The majority of the rotator cuff muscles in the shoulder

29

What is the most prominent feature of the posterior surface of the scapula?

The spine

30

What does the spine do?

Runs transversely across the scapula, dividing the surface in two

31

What is the area below the spine of the scapula called?

Infraspinous fossa

32

What does the infraspinous fossa display?

A convex shape

33

What originates from the infraspinous fossa?

The infraspinatus muscle

34

What is the area above the spine of the scapula called?

Supraspinous fossa

35

How does the supraspinous fossa differ from the infraspinous?

It is much smaller, and more convex is shape

36

What originates from the supraspinous fossa?

The supraspinatus muscle

37

What is acromion?

A projection of the spine that arches over the glenohumeral joint

38

What does the acromion articulate with?

The clavicle

39

What is the clinical relevance of the scapula?

Fractures of the scapula 
Winged scapula

40

How common are fractures of the scapula?

Relatively uncommon

41

What are fractures of the scapula an indication of?

Severe chest trauma

42

Where are fractures of the scapula frequently seen?

High speed road collisions, crushing injuries, or sports injuries

43

Does the fractured scapula require intervention?

Not much

44

Why does the fracture of the scapula not require much intervention?

As the tone of the muscles holds the pieces in place for healing to occur

45

What muscle is involved in winging of the scapula?

The serratus anterior

46

Where does the serratus anterior muscle originate from?

Ribs 2-8

47

What does the serratus anterior attach too?

The costal surface of the scapula, pulling it against the rib cage

48

What innervates the serratus anterior?

The long thoracic nerve

49

What happens if the long thoracic nerve gets damaged?

The scapula protrudes out of the back when pushing with the arm

50

How can the long thoracic nerve become damaged?

By trauma to the shoulder, repetitive movements involving the shoulder, or by structures becoming inflamed and pressing on the nerve