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Question 1

Origin of Latissimus Dorsi

Answer 1

Supraspinous ligament from T3 caudally via thoracolumbar fascia

Question 2

Insertion of latissimus Doris

Answer 2

Teres major tuberosity with the teres major muscle tendon

Question 3

Action of latissimus Doris

Answer 3

Draws the thoracic limb caudally; flexor of the shoulder joint; with limb fixed, draws the trunk forward

Question 4

Innervation of latissimus Doris

Answer 4

Thoracodorsal nerve

Question 5

Origin of iliocostalis

Answer 5

Cervicis part: between the transverse processes of C4 and T1 and first rib

Thoracic part: lumbar transverse processes and fleshy from cranial border of ribs

Question 6

Insertion of illiocostalis

Answer 6

Angles of ribs 1-15 and transverse process of C7

Question 7

Action of iliocostalis

Answer 7

Stabilizes lumbar vertebrae and ribs; extends vertebral column and bends it laterally; may function in expiration

Question 8

Innervation of iliocostalis

Answer 8

Dorsal branches of local spinal nerves

Question 9

Origin of longissimus Dorsi

Answer 9

Spinous processes of sacrum, lumbar and thoracic vertebrae; wing of ilium; transverse processes of thoracic and cervical vertebrae

Question 10

Insertion of longissimus dorsi

Answer 10

Transverse processes of vertebrae; tubercles of ribs; wing of atlas; and mastoid process of temporal bone

Question 11

Action of longissimus dorsi

Answer 11

Stabilizes and extends vertebral column; elevates or bends head and neck laterally

Question 12

Innervation of longissimus dorsi

Answer 12

Dorsal branches of local spinal nerves