Brainscape's Knowledge GenomeTM

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


See full index

1 Upper limb anatomy > 2 Glenohumeral joint and proximal humerus > Flashcards

2 Glenohumeral joint and proximal humerus Flashcards

1
Q

What is the name of the cavity on the lateral surface of the scapula?

A

Glenoid cavity

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

What articulates with glenoid cavity?

A

Head of the humerus

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

What type of joint is the glenohumeral joint?

A

Synovial ball and socket joint

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

What is the cartilage around the glenoid cavity?

A

Glenoid labrum

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

What is a tubercle on a bone?

A

Round notdule which significes attachment site of muscle/limb

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

How many tubercles does the humerus have?

A

2 - greater (laterally) and lesser (medially)

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

What are the two necks of the humerus?

A

Anatomical (superior to tubercles) and surgical (inferior to tubercles)
Surgical is where it’s most likley to fracture

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

What is the function of the greater tubercle if the humerus?

A

An attachment for 3 rotator cuff muscles
Supraspinatus
Infraspinatus
Teres minor

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

What is the function of the lesser tubercle if the humerus?

A

An attachment for last rotator cuff muscle
Subscapularis

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

What seperates the two tubercles

A

Intertubercular groove

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

What is the function of the intertubercular groove

A

Attachment of tendons of
Pectoralis major
Teres major
Latissimus dorsi

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

What are bith surfaces of the glenohumeral joint covered in?

A

Hyaline cartilage

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

What is larger the head of the humerus or glenoid fossa?

A

The head of the humerus which means the joint has instability

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

What is the purpose of the ligaments in the glenohumeral joint?

A

To strengthen and ease movements

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

What are the four main ligaments in the glenohumeral joint?

A

Glenohumeral ligaments
Coracohumeral ligament
Transverse humeral ligament
Coracoacromial ligament

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

What makes up the glenohumeral ligaments?

A

3 bands - superior, middle, inferior
Run from glenoid fossa to anatomical neck of humerus

17
Q

What is the function of the glenohumeral ligaments?

A

To strengthen and stabilise anterior aspect of joint capsule

18
Q

Where does coracohumeral ligament attach to?

A

Base of coracoid process to greater tubercle of humerus

19
Q

What is the function of the coracohumeral ligament?

A

Support superior part of joint capsule

20
Q

Where is transverse humeral ligament found?

A

Between greater and lesser tubercle of humerus

21
Q

What is the function of the transverse humeral ligament?

A

Holds long head of tendon of biceps brachii in the intertubercular groove

22
Q

Where is the coracoacromial ligament between?

A

Acromion and coracoid process of the scapula

23
Q

What is the function of the coracoacromial ligament?

A

To prevent superior displacement of the humeral head

24
Q

What is the joint capsule made up of?

A

Fibrous sheath

25
Q

What is the function of a joint capsule?

A

To enclose the structures of a joint

26
Q

Where is the glenohumeral joint capsule?

A

From anatomical neck of humerus to border of glenoid fossa

27
Q

What lines the inner surface of a joint capsule?

A

Synovial membrane which produces synovial fluid (reduces friction between surfaces)

28
Q

In glenohumeral joint what is present to reduce friction?

A

Synovial bursae, two clinically important ones are
Subacromial bursa
Subscapular bursa

29
Q

What is a bursa

A

Sac filled with synovial fluid - wich acts as a cushion between tendons and other joint structures

30
Q

What is the clinical significance of subacromial bursa?

A

Subacromial bursitis - a type of rotator cuff injury
Dislocation

31
Q

What are the movements of the glenohumeral joint?

A

Extension, flexion
Abduction, adduction
Medial, lateral rotation

32
Q

What muscles produce flexion at glenohumeral joint?

A

Biceps brachii
Pectoralis major
Anterior deltoid
Corachobrachialis

33
Q

What muscles produce extension at glenohumeral joint?

A

Posterior deltoid
Latissimus dorsi
Teres major

34
Q

What muscles produce abduction at glenohumeral joint?

A

0-15 Supraspinatus
15-90 Middle deltoid (help from supraspinatus)
Past 90 scapula rotation needs to occur

35
Q

What muscles produce scapula roation past 90 for abduction at glenohumeral joint?

A

Trapezius
Serratus anterior

36
Q

What muscles produce adduction at glenohumeral joint?

A

Pectoralis major
Lattisimus dorsi
Teres major

37
Q

What muscles produce medial rotation at glenohumeral joint?

A

Subscapularis
Pectoralis major
Latissimus dorsi
Teres major
Anterior deltoid

38
Q

What muscles produce lateral roation at glenohumeral joint?

A

Infraspinatous
Teres minor

1 Upper limb anatomy (13 decks)

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