Synch 10- Scapulothoracic, SC, AC, and GH joints

PlayfulHarmony avatar
PlayfulHarmony
·
·
Download

Start Quiz

Study Flashcards

42 Questions

What type of joint is the Scapulothoracic joint?

Physiological joint

Which joint provides a moveable base for the humerus, increasing the range of motion at the shoulder joint?

Scapulothoracic joint

Which movement of Scapula involves abduction away from the midline of the spine?

Protraction

What role does the Scapulothoracic joint play in overhead work?

Provides glenohumeral stability

What type of movement involves upward sliding on the ribcage, such as shrugging the shoulders?

Elevation

Which of the following shoulder movements would cause the scapula to rotate upwards?

Flexion of Arm

In upward rotation of the scapula, what happens to the glenoid cavity?

It rotates superiorly

The sternoclavicular joint is a...

Saddle synovial joint

How many degrees of freedom does the SC joint have (sternoclavicular joint)?

3

Which joint provides the moveable base for the humerus and helps absorb shocks to outstretched arms?

Scapulothoracic joint

Which joint allows downward rotation with concave and convex articular surfaces?

Sternoclavicular joint

Which joint is described as a planar synovial joint with subtle movement?

Acromioclavicular joint

Which ligament of the SC joint prevents the clavicle from moving superiorly?

Costoclavicular ligament

Which structure deepens the glenoid cavity to make articular surfaces congruent?

Glenoid labrum

Which ligament of the SC joint is considered extrinsic?

Interclavicular ligament

Which movement of the SC joint has the largest ROM?

Elevation

Which ligaments prevents superior dislocation of AC (acromioclavicular) joint?

Coracoclavicular ligaments

Which bursa facilitates movements of the supraspinatus tendon?

Subacromial bursa

Which joint movements include elevation, depression, protraction, retraction, and rotation of the clavicle?

Sternoclavicular joint movements

Which of these ligaments wraps around the tendon of the long head of biceps?

Transverse humeral ligament

What is the range of horizontal adduction at the shoulder joint?

140 degrees

In which axis does rotation of the shoulder joint occur?

Longitudinal axis of the humerus

What is the range of flexion at the shoulder joint?

180 degrees

The final position of flexion can be reached by how many degrees of abduction?

180 degrees

What muscles are involved in horizontal abduction at the shoulder joint?

Posterior deltoid, Infraspinatus, Teres major and minor, Rhomboid muscles, Trapezius, Latissimus dorsi

What is the position of reference for measuring the range of transverse movements of the shoulder joint?

90 degrees abduction of shoulder in the frontal plane

At what degree does lateral rotation occur at the shoulder joint?

80 degrees

What is the range of horizontal abduction at the shoulder joint?

30 degrees

At what degree does medial rotation occur at the shoulder joint?

90 degrees

What is the position of the forearm to measure the range of movements of rotation at the shoulder joint?

Forearm lying in a sagittal plane with the elbow bent at 90 degrees

The articular surfaces of the GH joint are covered by ______ cartilage. (what type of cartilage?)

The head of the humerus has great congruency with the glenoid fossa

False

Glenoid labrum is composed of fibrocartilage that attach to the margins of the glenoid cavity

True

Short head of biceps is involved in horizontal adduction

True

Bursae serve to decrease ______ between muscle and joint capsule

Coracohumeral ligament connects the coracoid process to the......

Greater tubercle of the humerus

The coracohumeral ligament serves to keep the biceps tendon in its groove during any GH movement

False

What direction are shoulder dislocations most common in?

Inferior

Which nerve is most likely to be damaged with shoulder dislocation?

Axillary nerve

Which of these ligaments supports the GH joint anteriorly?

All of the above

Which of these ligaments supports the GH superiorly?

Coracoacromial ligament

The GH is supported posteriorly by the ______ muscles

Study Notes

Shoulder Joint Anatomy and Physiology

  • Sternoclavicular joint allows downward rotation, with concave and convex articular surfaces
  • Supportive ligaments include sternoclavicular, interclavicular, and costoclavicular ligaments
  • Joint movements include elevation, depression, protraction, retraction, and rotation of the clavicle
  • Acromioclavicular joint is a planar synovial joint with subtle movement
  • Ligaments of the AC joint include acromioclavicular, trapezoid, and conoid ligaments
  • Glenohumeral joint is a ball and socket synovial joint with three degrees of freedom
  • Glenoid labrum deepens the glenoid cavity to make articular surfaces congruent
  • GH joint capsule attaches to the glenoid cavity and anatomical neck of humerus
  • GH joint ligaments include capsular, transverse humeral, and coracohumeral ligaments
  • Coracoacromial arch is formed by the smooth inferior aspect of the acromion and coracoid processes
  • Rotator cuff muscles are fused to the joint capsule, except for the biceps
  • Bursae around the GH joint, including subscapular, subacromial, and subdeltoid bursae, protect underlying tendons and muscles

Test your knowledge of shoulder joint anatomy and physiology with this quiz! Explore the intricate details of sternoclavicular, acromioclavicular, and glenohumeral joints, along with ligaments, movements, and supportive structures.

Make Your Own Quizzes and Flashcards

Convert your notes into interactive study material.

Get started for free

More Quizzes Like This

TRAUMATOLOGIA DOS MEMBROS SUPERIORES
20 questions
Shoulder Girdle Anatomy and Function
5 questions
Shoulder Quiz
24 questions

Shoulder Quiz

ComprehensiveOrangutan avatar
ComprehensiveOrangutan
Use Quizgecko on...
Browser
Browser