MUSCLES OF THE VERTEBRAL COLUMN

Question 1

Trapezius (Origin)

Answer 1

Occipital bone,
ligamentum nuchae, C7
spine, spines of all thoracic
vertebrae

Question 2

Trapezius (Insertion)

Answer 2

Upper fibers – lateral third of clavicle;
Middle & lower fibers – acromion and
spine of scapula

Question 3

Trapezius (Nerve Supply)

Answer 3

Spinal part of accessory
nerve (motor), C3 and C4
(sensory); (CN XI)

Question 4

Trapezius (Action)

Answer 4

Upper fibers – scapular
elevation; Middle –scapular retraction;
Lower – pulls medial border of
scapula downward

Question 5

Latissimus Dorsi (Origin)

Answer 5

iliac crest, lumbar fascia,
spines of lower 6 thoracic
vertebrae, lower 3 or 4
ribs, inferior angle of
scapula

Question 6

Latissimus Dorsi (Insertion)

Answer 6

floor of bicipital groove of
humerus

Question 7

Latissimus Dorsi (Nerve Supply)

Answer 7

Thoracodorsal nerve (C6,
7, 8)

Question 8

Latissimus Dorsi (Action)

Answer 8

Extends, adducts and
medially rotates arm

Question 9

Levator Scapulae (Origin)

Answer 9

Transverse process of 1st
four cervical vertebrae

Question 10

Levator Scapulae (Insertion)

Answer 10

Medial border of scapula

Question 11

Levator Scapulae (Nerve Supply)

Answer 11

C3 and C4, Dorsal scapular
nerve (C3, 4, 5)

Question 12

Levator Scapulae (Action)

Answer 12

Raises medial border of
scapula

Question 13

Rhomboid Minor (Origin)

Answer 13

Ligamentum nuchae,
spines of C7 and T1

Question 14

Rhomboid Minor (Insertion)

Answer 14

Medial border of scapula

Question 15

Rhomboid Minor (Nerve Supply)

Answer 15

Dorsal scapular nerve (C4,
5)

Question 16

Rhomboid Minor (Action)

Answer 16

Raises medial border of
scapula upward & medially

Question 17

Rhomboid Major (Origin)

Answer 17

Spines of T2 – T5

Question 18

Rhomboid Major (Insertion)

Answer 18

Medial border of scapula

Question 19

Rhomboid Major (Nerve Supply)

Answer 19

Dorsal scapular nerve (C4,
5)

Question 20

Rhomboid Major (Action)

Answer 20

Raises medial border of
scapula upward & medially