Scapula

Question 1

Which bones make up the pectoral (shoulder) girdle?

Answer 1

Scapula
Clavicle
Manubrium of the sternum

Question 2

Which bones articulate at the glenohumeral joint?

Answer 2

Scapula (glenoid cavity) and (head of) humerus

Question 3

Which bones articulate at the acromioclavicular joint?

Answer 3

Scapula and clavicle

Question 4

How many borders does the scapula have? Name them.

Answer 4

3 borders. Superior, lateral and medial.

Question 5

How many angles does the scapula have? Name and describe them.

Answer 5

3 angles.

Lateral angle - where the superior border meets the lateral border.

Superior angle - where the superior border meets the medial border.

Inferior angle - where the medial border meets the lateral border.

Question 6

How many surfaces does the scapula have? Name and describe them.

Answer 6

2 surfaces.

Costal (anterior) surface - concave in shape, mainly made up by the subscapular fossa.

Posterior surface - convex in shape, divided by the spine of the scapula into the infraspinous and supraspinous fossae.

Question 7

How many processes does the scapula have? Name them.

Answer 7

2 processes.

The coracoid and acromion process.

Question 8

Which ligaments attach to the coracoid process?

Answer 8

3 ligaments:

Coracohumeral ligament - to the greater tubercle of the humerus.

Coracoclavicular ligament - to the clavicle.

Coracoacromial ligament - to the acromion process.

Question 9

Which arteries form an anastomoses to supply blood to the posterior scapula region?

Answer 9

Suprascapular artery
Posterior circumflex humeral artery
Circumflex scapular artery
Transverse cervical artery

Question 10

Describe the suprascapular artery.

Answer 10

Suprascapular artery: a branch of the thyrocervical trunk, which in turn arises from the subclavian artery. It runs along the suprascapular nerve and mostly supplies the supraspinatus and infraspinatus muscles

Question 11

Describe the posterior circumflex humeral artery.

Answer 11

Posterior circumflex humeral artery: a branch of the axillary artery supplying the glenohumeral joint.

Question 12

Describe the circumflex scapula artery.

Answer 12

Circumflex scapular artery: originating from the subscapular artery, which in turn is a branch of the axillary artery.

Question 13

Describe the transverse cervical artery.

Answer 13

Transverse cervical artery: a branch of the thyrocervical trunk running along the medial border of the scapula.