Lumbar Extension - Transversospinalis

Question 1

Multifidi (insertion)

Answer 1

spinous processes of vertebrae above, spans 2-4 segments (longest)

Question 2

Multifidi (origin)

Answer 2

sacrum, ilium

Question 3

Multifidi (action)

Answer 3

Stabilizes and rotation of vertebral column (stability is primary, rotation is more of an assist)

Question 4

Multifidi (innervation)

Answer 4

dorsal rami

Question 5

Multifidi (blood supply)

Answer 5

dorsal branches of lumbar arteries

Question 6

Rotatores (origin)

Answer 6

transverse processes of lumbar regions

Question 7

Rotatores (insertion)

Answer 7

lamina and transverse processes of spine above, spans 1-2 segments (shortest)

Question 8

Rotatores (action)

Answer 8

stabilizes, extends, and rotates the spine (stability is primary, extension and rotation are assistive)

Question 9

Rotatores (innervation)

Answer 9

dorsal rami

Question 10

Rotatores (blood supply)

Answer 10

dorsal branches of segmental arteries