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Anatomy II > Shoulder powerpoint > Flashcards

Shoulder powerpoint Flashcards

1
Q

What provides protection for brachial plexus and subclavian blood vessels

A

The posterior surface of the sternal end of the clavicle

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2
Q

What type of joint is the sternoclavicular joint?

A

Saddle type synovial

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3
Q

What type of joint is the acromioclavicular joint?

A

Planar/ gliding type synovial

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4
Q

What does the suprascapular nerve pass through? What holds it in place?

A

Supra scapular notch; Superior transverse lig.

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5
Q

What makes up the shoulder girdle?

A

Clavicle and scapula

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6
Q

What are the functions of the scapula?

A
  1. Provides attachments for large, strong muscles
  2. Protection of body parts
  3. Scapula acts as pivot point for the level system of the shoulder
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7
Q

Only bony link between shoulder girdle and trunk (keeps shoulder joint away from anterior chest)

A

Sternoclavicular joint

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8
Q

What type of articular cartilage is in the SC joint?

A

Fibrocartilage (most joints have hyaline cartilage)

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9
Q

What is located between the articular surfaces of the SC joint and divide the joint space into 2 cavities?

A

Fibrocartilaginous disc

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10
Q

What are the ligaments of the SC joint?

A
  1. Anterior and Posterior SC lig.’s
  2. Costoclavicular lig.
  3. Interclavicular lig.
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11
Q

Ligaments that limit upward and lateral displacement of medial end of clavicle; Ligament continuous with articular disc; Ligaments reinforce the fibrous joint capsule

A

Anterior and posterior SC lig.’s

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12
Q

Ligament that limits upward and lateral displacement of the medial end of the clavicle; Attaches to costal tuberosity on the clavicle; Reinforces fibrous joint capsule

A

Costoclavicular lig.

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13
Q

Ligament that prevents lateral displacement of medial end of the clavicle; Travels between left and right clavicles across the superior surface of the manubrium

A

Interclavicular ligament

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14
Q

What is different about the articular disc at the AC joint (in comparison to the SC joint)?

A

The disc is usually incomplete and wedge shaped

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15
Q

What is the strongest ligament that binds the clavicle to the scapula?

A

Coracoclavicular ligaments

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16
Q

What are the two parts of the coracoclavicular ligament? which is medial and which is lateral?

A 
Trapezoid = lateral
Conoid = medial
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17
Q

Where is the anatomical neck of the humerus?

A

Where the joint capsule attaches to; the thick part around the head of the humerus

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18
Q

Where is the most likely site for fractures of the humerus?

A

Surgical neck

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19
Q

What is the shape of the shaft of the humerus?

A

Triangular

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20
Q

What does the radial nerve travel through on the humerus?

A

Radial groove

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21
Q

What part of the humerus articulates with the ulna? radius?

A

Trochlea; capitulum

22
Q

What fossas allow the arm to flex and extend at the elbow? name the fossa and the corresponding boney articulation.

A

Radial fossa - head of the radius (flexion)
Coronoid fossa - coronoid process of the ulna (flexion
Olecranon fossa - olecranon process of the ulna (extension)

23
Q

What type of joint is at the humeral-ulnar joint?

A

hinge

24
Q

What type is the humeral-radial joint?

A

Gliding/planar

25
Q

Ligament that forms hammock-like sling under head of humerus

A

Inferior glenohumeral lig

26
Q

The fibrocartilage that surrounds the rim of the glenoid fossa

A

glenoid labrum

27
Q

What ligament helps form tunnel for long head of biceps brachii?

A

Coracohumeral ligament

28
Q

What is the stability for bony structures of the shoulder joint? ligamentous structure? Muscular arrangement?

A

Weak (shallow glenoid fossa); Weak (slap joint capsule); Strong

29
Q

What movements of the shoulder joint/girdle hep stabilized the joint?

A

Elevation and depression for raising loads; upward rotation for lifting heavy loads

30
Q

True or false:

The tendon of the long head of biceps brachii is intracapsular and extrasynovial

A

True

31
Q

Pyramidal structure at the junction of the arm and thorax; contains an apex, base, and four walls

A

Axilla

32
Q

What 3 bones meet to form the apex of the axilla? What enters through the opening (apex) of the axilla?

A
  1. Clavicle - anterior wall
  2. Scapula - posterior wall
  3. 1st rib - medial wall
    All blood vessels and nerves to the upper limb
33
Q

What makes up the base of the axilla?

A

Fascia and skin of the concave axilla

34
Q

What makes up the anterior wall of the axilla?

A
  1. Clavicle

2. Pectoral muscles

35
Q

What makes up the posterior wall of the axilla?

A
  1. Scapula
  2. Subscapularis muscle
  3. Teres major and latissimus dorsi muscles - inferiorly
36
Q

What makes up the medial wall of the axilla?

A
  1. Ribs
  2. Intercostal muscles
  3. Serratus anterior muscle
37
Q

What makes up the lateral wall of the axilla?

A

(Narrow wall)

Intertubercular groove which holds the tendon of the long head of the biceps muscle

38
Q

What is contained in the axilla?

A

Cords and branches of brachial plexus

39
Q

What ligament turns the suprascapular notch into the suprascapular foramen?

A

superior transverse lig of the scapula

40
Q

What travels above and below the transverse ligament in the suprascapular notch?

A 
Above= suprascapular artery and vein
Below = suprascapular nerve
41
Q

What makes up the borders of the quadrangular space?

A
  1. Superior border – teres minor muscle
  2. Inferior border – teres major muscle
  3. Medial border – long head of the triceps brachii muscle
  4. Lateral border – Shaft of humerus and joint capsule
42
Q

What is contained in the quadrangular space?

A
  1. Axillary nerve
  2. muscles
  3. Posterior humeral circumflex artery
43
Q

What makes up the borders of the deltopectoral triangle?

A
  1. Clavicle – superior
  2. Pectoralis major muscle – medial
  3. Deltoid muscle – lateral
44
Q

What is contained in the deltopectoral triangle?

A
  1. Cephalic vein travels in the triangle and then dives deep to join the axillary vein
  2. Coracoid process of scapula
45
Q

What are the intrinsic ligaments of the AC joint? extrinsic?

A

Superior and inferior acromioclavicular ligs; coracoclavicular ligs

46
Q

Joint encases in musculature; Highly mobile joint; Provides mobility between the scapula and thorax and is vital to the motions of the arm

A

Scapulothoracic joint

47
Q

What is the functional significance of shoulder girdle motions?

A
  1. Strong muscles provide power
  2. Fragile bones provide mobility
  3. Functions of different motions
48
Q

What shoulder girdle motion is important for crutch walking?

A

depression

49
Q

______ rotation of scapula occurs in flexion and abduction of the arm.
______ rotation of the scapula occurs in extension, hyperextension and adduction of the arm

A

Upward; Downward

50
Q

_____ of the shoulder girdle muscles is important for the smooth coordinated motion of the scapula

A

Antagonistic lengthening

Anatomy II (8 decks)

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