The shoulder

Question 1

What is a girdle

Answer 1

a structure that surrounds and makes a circular area.

Question 2

What is the order of shoulder articulation within the shoulder?

Answer 2

Scapular articulating with left clavicle, clavicle articulating with the sternum. Sternum articulating with the right clavicle and the clavicle articulating with the scapular on the right.

Question 3

What does the pectoral girdle have that is different to the pectoral girdle?

Answer 3

There is a gap in the middle of the girdle which provides great mobility. However, when muscle is included it completes the girdle

Question 4

what are the 3 true joints of the pectoral girdle?

Answer 4

Sternoclavicular joint
Acromioclavicular joint
Glenohumeral joint

Question 5

What are the 2 other joints of the pectoral girdle?

Answer 5

scapulothoracic articulation

Subacromial articulation

Question 6

How is the clavicle shaped?

Answer 6

It is an extended ‘s’ shape which enables 180 degrees of lateral abduction

Question 7

What are the features of the clavicle?

Answer 7

• The sternal facade in the medial side, this surface articulates with the sternum
• The impression for the costoclavicular ligament, this is to the left of the sternal facade
• The body of the clavicle which receives the muscle
• The articulation surface for the acromioclavicular joint
• Acromion (sticks out)
• trapezoid line which attaches the trapezoid ligament

Question 8

What is the glenohumeral joint?

Answer 8

Made up of the humerus and the articular surface called the glenoid fossa

Question 9

What is a fossa?

Answer 9

a shallow depression in the bone surface

Question 10

Function of the scapular?

Answer 10

• articulates with the thorax which allow for large movements of the upper limb
• scapular glides around the thorax to provide more amplitude of the movement for the glenohumeral joint