extrinsic back

Question 1

Trapezius attachment

Answer 1

• Skull
• Ligamentum nuchae
• Spinous processes of C7-T12

Question 2

Trapezius insertion

Answer 2

• Clavicle
• Acromion
• Scapula spine

Question 2

Trapezius action

Answer 2

• Superior fibres - elevate scapula
• Middle fibres - retract scapula
• Inferior fibres - depress scapula

Question 2

Trapezius innervation

Answer 2

• Accessory nerve CN XI motor
• C3/C34 pain and proprioception

Question 3

Latissimus dorsi attachment

Answer 3

• Spinous processes of T6-T12
• Thoracolumbar fascia
• Iliac crest
• Inferior 3-4 ribs

Question 4

Latissimus dorsi insertion

Answer 4

• Floor of intertubercular groove of humerus

Question 5

Latissimus dorsi action

Answer 5

• Extends abducts and medially rotates humerus
• Raises body towards arm when climbing

Question 6

Latissimus dorsi innervation

Answer 6

• Thoracodorsal nerve

Question 7

Levator scapulae attachment

Answer 7

• Transverse processes of C1-C4

Question 8

Levator scapulae insertion

Answer 8

• Superior angle of scapula

Question 9

Levator scapulae action

Answer 9

• Elevates scapula

Question 10

Levator scapulae innervation

Answer 10

• Dorsal scapular nerve

Question 11

Rhomboid major attachment

Answer 11

• Nuchal ligament and spinous process of T2-T5

Question 12

Rhomboid major insertion

Answer 12

• Medial border of scapula

Question 13

Rhomboid major action

Answer 13

• Retract and rotates scapula

Question 14

Rhomboid major innervation

Answer 14

• Dorsal scapular nerve

Question 15

Rhomboid minor attachment

Answer 15

• Nuchal ligament and spinous process of C7-T1

Question 16

Rhomboid minor innervation

Answer 16

• Dorsal scapular nerve

Question 17

Rhomboid minor insertion

Answer 17

• Medial border of scapula

Question 18

Rhomboid minor action

Answer 18

• Retract and rotates scapula

Question 19

Serratus posterior superior attachment

Answer 19

• Lower part of ligamentum nuchae
• C7-T3

Question 20

Serratus posterior superior insertion

Answer 20

• Ribs 2-5

Question 21

Serratus posterior superior action

Answer 21

• Elevates ribs 2-5
• Accessory muscle of inspiration

Question 22

Serratus posterior superior innervation

Answer 22

• Intercostal nerves

Question 23

Serratus posterior inferior attachment

Answer 23

- T11-L3

Question 24

Serratus posterior inferior insertion

Answer 24

- Ribs 9-12

Question 25

Serratus posterior inferior action

Answer 25

- Depresses ribs 9-12 - Prevents elevation of ribs when diaphragm contracts

Question 26

Serratus posterior inferior innervation

Answer 26

- Intercostal nerves