Pectoral Region

Question 1

Identify the joints of the pectoral (shoulder) girdle and provide their synovial classification.

Answer 1

Sternoclavicular: sellar or saddle
Acromioclavicular: plane or gliding
Glenohumeral: ball and socket
Scapulothoracic: pseudo-joint necessary for full GH function

Question 2

Identify the ligaments of the pectoral (shoulder) girdle.

Answer 2

Coracoclavicular, acromioclavicular, coracoacromial, coracohumeral, costoclavicular, superior transverse scapular, glenoid capsule, glenohumeral

Question 3

Locate the areas of the skin associated with a single spinal segment/nerve (dermatome).

Answer 3

C5 - deltoid tuberosity
C6 - thumb
C7 - middle finger

Question 4

Identify the functions and attachments of the coracoclavicular ligament.

Answer 4

Function: stabilizes AC joint limiting medial displacement, protraction and elevation
Trapezoid: from coracoid process to trapezoid line of clavicle
Conoid: from coracoid process to conoid tubercle of clavicle
Coracoid of scapula

Question 5

Identify the functions and attachments of the acromioclavicular ligament.

Answer 5

Function: stabilize AC joint
Attachment: from superior aspect of acromial end of clavicle to adjacent acromion

Question 6

Identify the functions and attachments of the coracoacromial ligament

Answer 6

Function: prevents the superior displacement of the humeral head by forming the coracoacromial arch
Attachment: lateral border of coracoid process to acromion adjacent to clavicular articulation

Question 7

Identify the functions and attachments of the coracohumeral ligament

Answer 7

Function: reinforces superoanterior aspects of joint capsule
Attachments: from base of coracoid process to anterior aspect of greater tubercle

Question 8

Identify the functions and attachments of the costoclavicular ligament.

Answer 8

Function: stabilize sternoclavicular joint, limiting elevation of the clavicle
Attachments: from superior aspect of cartilage of first rib to undersurface of the clavicle

Question 9

Identify the functions and attachments of the superior transverse scapular ligament.

Answer 9

Function: closes off the suprascapular notch
Attachments: from the base of the coracoid process to the medial edge of the scapular notch

Question 10

Identify the functions and attachments of the glenoid capsule.

Answer 10

Attachements: from the circumference of glenoid cavity to anatomical neck of the humerus.

Question 11

Identify the functions and attachments of the glenohumeral ligament.

Answer 11

Function: stabilizes GH articulation
Attachments: from upper part of medial margin of glenoid cavity to lesser tubercle and anatomical neck