Scapula

Question 1

What is the scapula commonly known as?

Answer 1

Shoulder blade

Question 2

How many surfaces does the scapula have?

Answer 2

Two surfaces

Question 3

How many borders are present on the scapula?

Answer 3

Three borders

Question 4

What is the large angle on the scapula called that bears the glenoid cavity?

Answer 4

Lateral or glenoid angle

Question 5

What divides the dorsal surface of the scapula?

Answer 5

Triangular spine

Question 6

What are the two fossae on the dorsal surface of the scapula?

Answer 6

Supraspinous fossa and infraspinous fossa

Question 7

What is the characteristic of the costal surface of the scapula?

Answer 7

Concave and directed medially and forwards

Question 8

Fill in the blank: The _______ surface is occupied by the concave subscapular fossa.

Answer 8

Costal

Question 9

What is the function of the thick ridge on the subscapular fossa?

Answer 9

Acts as a lever for the action of the serratus anterior

Question 10

What is the superior border of the scapula characterized by?

Answer 10

Thin and shorter

Question 11

Where is the suprascapular notch located?

Answer 11

Near the root of the coracoid process

Question 12

What is the inferior angle of the scapula covered by?

Answer 12

Latissimus dorsi

Question 13

What does the lateral or glenoid angle of the scapula bear?

Answer 13

Glenoid cavity or fossa

Question 14

What is the spine or spinous process of the scapula?

Answer 14

A triangular plate of bone that divides the dorsal surface

Question 15

What are the two surfaces of the acromion?

Answer 15

Superior and inferior

Question 16

What process of the scapula is described as being finger-like?

Answer 16

Coracoid process

Question 17

What muscle arises from the medial two-thirds of the subscapular fossa?

Answer 17

Subscapularis

Question 18

Which muscle arises from the medial two-thirds of the supraspinous fossa?

Answer 18

Supraspinatus

Question 19

What muscle arises from the medial two-thirds of the infraspinous fossa?

Answer 19

Infraspinatus

Question 20

What is the insertion point of the trapezius on the scapula?

Answer 20

Upper border of the crest of the spine and medial border of the acromion

Question 21

Fill in the blank: The long head of the biceps brachii arises from the _______.

Answer 21

Supraglenoid tubercle

Question 22

What is the origin of the coracobrachialis?

Answer 22

Medial part of the tip of the coracoid process

Question 23

True or False: The pectoralis minor is inserted into the medial border and superior surface of the acromion.

Answer 23

False

Question 24

What muscle arises from the infraglenoid tubercle?

Answer 24

Long head of the triceps brachii

Question 25

What artery lies between the two slips of the teres minor?

Answer 25

Circumflex scapular artery

Question 26

What is the origin of the teres major?

Answer 26

Lower one-third of the rough strip on the dorsal aspect of the lateral border

Question 27

Where is the levator scapulae inserted?

Answer 27

Dorsal aspect of the medial border, from the superior angle up to the root of the spine

Question 28

Name the muscles that originate from the scapula.

Answer 28

1. Supraspinatus – Supraspinous fossa 2. Infraspinatus – Infraspinous fossa 3. Subscapularis – Subscapular fossa 4. Teres major – Lateral border (lower part) 5. Teres minor – Lateral border (upper part) 6. Deltoid – Spine of scapula & acromion 7. Triceps brachii (long head) – Infraglenoid tubercle 8. Biceps brachii (short head) – Coracoid process 9. Coracobrachialis – Coracoid process

Question 29

Name the muscles inserting into the scapula.

Answer 29

1. Trapezius – Spine of scapula, acromion 2. Levator scapulae – Superior angle & medial border 3. Rhomboid major – Medial border (below spine) 4. Rhomboid minor – Medial border (at spine level) 5. Serratus anterior – Medial border (anterior surface) 6. Latissimus dorsi – Inferior angle 7. Omohyoid (inferior belly) – Superior border 8. Pectoralis minor – Coracoid process

Question 30

Name the ligaments attached to the scapula.

Answer 30

1. Coracoacromial ligament – Between coracoid process & acromion. 2. Coracoclavicular ligament (trapezoid & conoid parts) – Coracoid process to clavicle. 3. Acromioclavicular ligament – Acromion to clavicle. 4. Superior transverse scapular ligament – Bridges the suprascapular notch. 5. Inferior transverse scapular ligament – Bridges the spinoglenoid notch. 6. Glenohumeral ligaments (superior, middle, inferior) – Margin of glenoid cavity.

Question 31

What is the cause of winged scapula?

Answer 31

Paralysis of serratus anterior due to long thoracic nerve injury.

Question 32

How does the scapula develop?

Answer 32

endochondral and membranous ossification from 1 primary center and 7 secondary centers.