Brainscape's Knowledge GenomeTM

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


See full index

Upper Limb Intro > Joints of Upper Limb > Flashcards

Joints of Upper Limb Flashcards

0
Q

What is the scapulohumeral rhythm?

A

For every 3 degrees of elevation, approximately 2 degrees occur at glenohumeral, 1 degree at scapulothoraic

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

What joints move the pectoral girdle?

A

Sternoclavicular, acromioclaviular, and glenohumeral

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

What are the important movements of the pectoral girdle?

A

Scapular Movements: elevation and depression, protraction and retraction, rotation

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

What type of joint is the sternoclavicular (SC) and where does it articulate?

A

Synovial Saddle joint but functions as a ball-and-socket between the sternal end of the clavicle and the manubrium of the sternum and the 1st costal cartilage

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

What is a benefit and a downfall for an articular disc serving as a shock absorber for the clavicle?

A

Dislocation of clavicle is unusual, but fracture is common

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

What ligament strengthens the capsule superiorly?

A

Interclavicular Ligament

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

What ligament anchors the inferior surface of the sternal end of the clavicle to the 1st rib and its costal cartilage?

A

Costoclavicular ligament

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

The costoclavicular ligament limits?

A

Elevation of the pectoral girdle

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

During full elevation of the limb, the clavicle is raised how many degrees?

A

60 degrees

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

The SC joint can be moved anteriorly or posteriorly over a range up to how many degrees?

A

25 to 30 degrees

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

What nerves supply the SC joint

A

Branches of the medial supraclavicular and subclavian nerve

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

What type of joint is the acromioclavicular joint?

A

Plane synovial

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

What cartilage covers the articular surfaces?

A

Fibrocartilage

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

The ac joint capsule is strengthened superiorly by what?

A

Fibers of the trapezius

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

Where does most of the AC ligament’s strength come from?

A

The coracoclavicular ligament

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

The apex of the vertical conoid ligament is attached to what?

A

The root of the coracoid process

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

What is the wide attachment (base) of the conoid ligament?

A

Conoid tubercle on the inferior surface of the clavicle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What ligament attaches to the superior surface of the coracoid process and inferior surface of the clavicle?

A

Trapezoid ligament

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What ligament allows the scapula and free limbs to be passively suspended from the clavicle?

A

Coracoclavicular Ligament

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What supplies the ac joint?

A

Suprascapular and thoraco-acromial arteries

20
Q

What 3 nerves innervates the AC joint?

A

Supraclavicular, Lateral Pectoral, and Axillary Nerves

21
Q

What joints are involved in flexion?

A

Sternoclavicular, Acromioclavicular, Glenohumeral, and Scapulothoracic Joints

22
Q

What joints are involved in abduction?

A

Sternoclavicular, acromioclavicular, glenohumeral, and scapulothoracic joints

23
Q

What movements are the glenohumeral joint involved in?

A

Flexion, extension, abduction, internal and lateral rotation

24
Q

The axillary nerve wraps around the humerus to form what space between the muscles and bones?

A

The quadrangular space

25
Q

What does more mobility compromise?

A

Stability

26
Q

What glenohumeral structure might be damaged if shoulder dislocation occurs?

A

Glenoid labrum

27
Q

What is the weakest part of the joint capsule?

A

Inferior part – no rotator cuff muscles

28
Q

What lines the internal surface of the glenohumeral fibrous capsule?

A

Synovial Membrane

29
Q

What ligament is only evident in the internal aspect of the capsule and strengthen the anterior aspect of the capsule?

A

Glenohumeral ligaments

30
Q

What is a strong band that passes from the base of the coracoid process to the anterior aspect of the great tubercle?

A

The coracohumeral ligament

31
Q

What ligament strengthens the capsule superiorly?

A

Coracohumeral Ligament

32
Q

What are the intrinsic ligaments that are part of the fibrous layer of the capsule?

A

Glenohumeral ligaments

33
Q

What is the extrinisic protective structure formed by the smooth inferior aspect of the acromion and coracoid process of the scapula?

A

coracoacromial ligament

34
Q

What ligament is so strong that is can prevent superior displacement from the glenoid cavity even if a forceful superior thrust of the humerus were to occur?

A

Coraco-acromial Arch

35
Q

What muscles act to resist dislocation without ducting movement at the joint?

A

Shunt muscles

36
Q

When the arms are at one’s side, what is the deltoid’s functions?

A

Shunt Muscle - Resist dislocation without producing movement

37
Q

Glenohumeral joint is supplied by what 3 arteries?

A

Anterior and Posterior circumflex humeral arteries and branches of the suprascapular artery?

38
Q

What nerves innervate the glenohumeral joint?

A

Suprascapular, Axillary, and Lateral Pectoral Nerves

39
Q

What is the repetitive use of the rotator cuff muscles called?

A

Degenerative tendinitis of the rotator cuff (look at case study)

40
Q

What is a strong ligament that will usually only tear if you fall because of the weight of the upper limb?

A

AC Joint

41
Q

What is the most common dislocation caused by excessive extension and lateral rotation which can also damage the axillary nerve?

A

Glenohumeral Joint

42
Q

What condition results in pain, tenderness, and limitation of movement due to the inflammation and calcification of the subacromial bursa?

A

Calcific Supraspinatus Tendinitis

43
Q

Adhesive scarring between the inflamed capsule of the glenhumeral joint, rotator cuff, subacromial bursa, and deltoid is called?

A

Adhesive capsulitis “Frozen Shoulder”

44
Q

What are the limiting structures for flexion (think ligaments and muscles)

A

Ligaments: Posterior part of Coracohumeral, Trapezoid, Posterior glenohumeral joint
Muscle: Rhomboids, levator scapulae, rotator muscles

45
Q

What are the limiting structures of abduction (think ligaments and muscles)

A

Ligaments: Trapezoid, Inferior Glenohumeral Joint
Muscles: Rhomboids, Levator Scapulae, adductor muscles of glenohumeral joint

46
Q

What are the limiting structures of extension (think muscles and ligaments)

A

Ligaments: Anterior coracohumeral and Anterior joint capsule of glenohumeral
Muscles: Clavicular Head of Pectoralis Major

47
Q

What are the limiting structures of internal (medial) rotation (think ligaments and muscles)

A

Ligaments: Posterior glenohumeral joint capsule
Muscles: Infraspinatus and teres minor

48
Q

What are the limiting structures of lateral (external) rotation (think ligaments and muscles)

A

Ligaments: Glenohumeral, coracohumeral, Anterior glenohumeral
Muscles: Latissimus dorsi, teres major, pectoralis major, subscapularis

Upper Limb Intro (7 decks)

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