Pectoral Girdle - Scapula

Question 1

Where is the scapula located?

Answer 1

On the posterior (dorsal) side of the body

Question 2

Describe the scapula

Answer 2

It is very thin
Triangular and concave on anterior side
Articulations on distal side
Follows curvature of ribs
Suspending from vertebral column, ribs and skull by muscles

Question 3

How many surfaces does the scapula have?

Answer 3

2

Question 4

How many borders does the scapula have?

Answer 4

3

Question 5

How many angles does the scapula have?

Answer 5

2

Question 6

What process is situated just above the humeral head?

Answer 6

Acromial process

Question 7

What is the acromial angle?

Answer 7

Where the acromion changes shape/angle

Question 8

Where is the acromioclavicular facet?

Answer 8

On the internal side of scapula (it is not a clear articulation)

Question 9

What is the spine?

Answer 9

It attaches the acromion to the rest of the scapula

Question 10

Where is the coracoid process/tubercle situated?

Answer 10

Opposite from the acromion and lower (very beak-like)

Question 11

Where is the suprascapular notch situated?

Answer 11

At the very top of the scapula

Question 12

Where is the supraglenoid tubercle?

Answer 12

Above the glenoid cavity

Question 13

What does the glenoid fossa/cavity articulate with?

Answer 13

Humeral head

Question 14

Where is the glenoid notch located?

Answer 14

On top of the glenoid fossa on the same side at the coracoid process

Question 15

What is the infraglenoid tubercle?

Answer 15

A tubercle on the underside of the glenoid fossa

Question 16

What is the spinoglenoid notch?

Answer 16

Notch between the spine and glenoid fossa

Question 17

Name the 2 necks

Answer 17

Anatomic neck

Surgical neck

Question 18

Name the 3 borders

Answer 18

Lateral (axillary)
Medial (vertebral) - much thinner
Superior

Question 19

Where is the subscapular fossa?

Answer 19

Anterior scapula (opposite side of spine)

Question 20

Where is the supraspinous fossa?

Answer 20

On the same side as the spine (posterior) and above the infraspinous fossa

Question 21

Where is the infraspinous fossa?

Answer 21

On the same side as the spine (posterior) and below the supraspinous fossa

Question 22

Name the 2 angles

Answer 22

Superior(medial)

Inferior

Question 23

Name the 2 surfaces

Answer 23

Ventral

Dorsal

Question 24

Describe the origin and insertion of deltoid

Answer 24

Origin: lateral acromion and lower border of spine (and clavicle)
Insertion: deltoid tuberosity of humerus

Question 25

Describe the movements of deltoid

Answer 25

flexion, extension, abduction and rotation of arm

Question 26

Describe the origin and insertion of trapezius

Answer 26

Origin: spine Insertion: acromion (also clavicle and superior nuchal line)

Question 27

Describe the movements of trapezius

Answer 27

elevation, adduction, depression and rotation of scapula

Question 28

Describe the origin and insertion of biceps brachii

Answer 28

Origin: supraglenoid tubercle and coracoid process Insertion: radial tuberosity on radius

Question 29

Describe the movements of biceps brachii

Answer 29

supination and flexion of forearm

Question 30

Describe the origin and insertion of triceps brachii

Answer 30

Origin: infraglenoid tubercle (and posterior diaphysis of humerus) Insertion: olecranon of ulna

Question 31

Describe the movements of triceps brachii

Answer 31

extension of forearm

Question 32

Describe the origin and insertion of pectoralis minor

Answer 32

Origin: ribs 3-5 Insertion: coracoid process

Question 33

Decribe the movements of pectoralis minor

Answer 33

draws scapula downwards and forwards

Question 34

Describe the origin and insertion of subscapularis

Answer 34

Origin: subscapular fossa Insertion: proximal humerus

Question 35

Decribe the movements of subscapularis

Answer 35

medial rotation of arm and shoulder stabilisation

Question 36

Describe the origin and insertion of supraspinatus

Answer 36

Origin: supraspinous fossa Insertion: greater tubercle of humerus

Question 37

Describe the movements of supraspinatus

Answer 37

Abduction of arm

Question 38

Describe the origin and insertion of infraspinatus (part of rotators cuff)

Answer 38

Origin: infraspinous fossa Insertion: greater tubercle of humerus

Question 39

Describe the movements of infraspinatus

Answer 39

lateral rotation and abduction of arm

Question 40

Describe the origin and insertion of teres minor

Answer 40

Origin: dorsal surface of lateral border Insertion: greater tubercle of humerus

Question 41

Describe the movements of teres minor

Answer 41

lateral rotation, adduction of arm and stabilisation

Question 42

Describe the origin and insertion of teres major

Answer 42

Origin: dorsal surface of lateral border Insertion: medial lip of intertuberculer groove of humerus

Question 43

Describe the movements of teres major

Answer 43

medial rotation, adduction and extension of arm

Question 44

Describe the origin and insertion of serratus anterior

Answer 44

Origin: outer surface of ribs 1-8/9 Insertion: medial border

Question 45

Describe the movements of serratus anterior

Answer 45

rotates/protracrs scapula for arm flexion and abduction

Question 46

Describe the origin and insertion of levator scapulae

Answer 46

Origin: superior posterior tubercles of transverse processes C1-4 Insertion: posterior surface of medial border

Question 47

Describe the movements of levator scapulae

Answer 47

elevation and rotation of scapula

Question 48

Describe the origin and insertion of rhombodeius minor

Answer 48

Origin: posterior root of spine C7-T1 Insertion: posterior surface of medial border

Question 49

Describe the movements of rhombodeius minor

Answer 49

retraction, elevation and stabilisation of scapula

Question 50

Describe the origin and insertion of rhombodeius major

Answer 50

Origin: inferior posterior T2-T5 Insertion: posterior surface of medial border

Question 51

Describe the movements of rhombodeuis major

Answer 51

retracvtion, elevation and stabilisation of scapula

Question 52

Describe the non-metric trait suprascapular foramen

Answer 52

ossification of suprascapular ligament so it becomes a foramen

Question 53

Describe the non-metric trait circumflex sulcus

Answer 53

Plexus of vascular strucutres can create a notch/groove on the postero-lateral border

Question 54

Name another non-metric trait of the scapula

Answer 54

acromial facet (facet on inferior surface of acromion) Unfused acromial epiphyses Variable inferior angle shape Variable acromion size