Pectoral Girdle

Question 1

What are these two parts

Answer 1

Question 2

How is the shoulder girdle attached to the upper limb?

Answer 2

• at the shoulder joint
• multi-axial ball and socket joint

Question 3

What are the 3 joints of the shoulder girdle?

Answer 3

1. sternoclavicular
2. acromioclavicular
3. glenohumeral

Question 4

What are these 3 joints?

Answer 4

Question 5

What 2 muscle groups stabilise and move the shoulder girdle?

locations

Answer 5

Back - connects to vertebral column
Pectoral region - attached to ribs

Question 6

What muscles make up the back muscle group?

That stabilise and move the shoulder girdle

Answer 6

1. Trapezius
2. Levator Scapulae
3. Rhomboid major
4. Rhomboid minor

Question 7

What muscles make up the pectoral region muscle group?

That stabilise and move the shoulder girdle

Answer 7

1. Pectoralis minor
2. Serratus Anterior

Question 8

What muscle is this?

Answer 8

Trapezius

Question 9

What is the origin of the trapezius?

Answer 9

Skull and cervical vertebrae

Question 10

What is the insertion of the trapezius?

Answer 10

Scapula and clavicle

Question 11

What is the role of the trapezius?

Answer 11

elevates, rotates, retracts scapula

Question 12

What is the origin of the levator scapulae?

Answer 12

Upper cervical vertebrae

Question 13

What is the insertion of the levator scapulae?

Answer 13

medial scapula above spine

Question 14

What muscle is this?

Answer 14

levator scapulae

Question 15

What is the role of the levator scapulae?

Answer 15

Elevates medial border of scapula

Question 16

What is the origin of the rhomboid minor?

Answer 16

Lower cervical verterbrae

Question 17

What is the insertion of the rhomboid minor?

Answer 17

medial scapula at spine

Question 18

What muscle is this?

Answer 18

rhomboid minor

Question 19

What is the role of the rhomboid minor?

Answer 19

Retracts and rotates scapula

Question 20

What is the role of the rhomboid major?

Answer 20

Retracts and rotates scapula

Question 21

What is the origin of the rhomboid major?

Answer 21

Upper thoracic vertebrae

Question 22

What is the insertion of the rhomboid major?

Answer 22

Medial scapula, below spine

Question 23

What muscle is this?

Answer 23

rhomboid major

Question 24

What is the role of the pectoralis minor?

Answer 24

• draws scapula forwards
• Depresses and downwardly rotates scapula
• Stabilises scapula

Question 25

What is the origin of the pectoralis minor?

Answer 25

Surface of ribs 3,4,5

Question 26

What is the insertion of the pectoralis minor?

Answer 26

Scapula

Question 27

What muscle is this?

Answer 27

pectoralis minor

Question 28

What is the role of the Serratus anterior?

Answer 28

* protracts and stabilises scapula against thorasic wall * Effectively elongates upper limb * Assists in upward rotation of scapulaa

Question 29

What is the origin of the Serratus anterior?

Answer 29

lateral surface of ribs 1-8

Question 30

What is the insertion of the Serratus anterior?

Answer 30

scapula, medial border

Question 31

What muscle is this?

Answer 31

Serratus anterior

Question 32

What role do the pectoralis major and latissimus dorsi play in the pectoral girdle?

Answer 32

stabilises shoulder joint and upper arm

Question 33

What is the role of the pectoralis major?

Answer 33

* flexion of arm * abduction of humerous * medial rotation of humerous * accessory for respiration

Question 34

What is the origin of the pectoralis major?

Answer 34

Clavicle & sternum

Question 35

What is the insertion of the pectoralis major?

Answer 35

humerus

Question 36

What muscle is this?

Answer 36

pectoralis major

Question 37

What is the role of the latissimus dorsi?

Answer 37

* extend and adduct humerus * medial rotation humerus * downward rotation of scapula

Question 38

What is the origin of the latissimus dorsi?

Answer 38

* vertebrae * lower ribs * hips

Question 39

What is the insertion of the latissimus dorsi?

Answer 39

humerus

Question 40

What muscle is this?

Answer 40

latissimus dorsi