Deep Back Muscles

Question 1

Intermediate muscle layer of the back consists of…?

Answer 1

serratus posterior superior and inferior

Question 2

Fxn of intermediate muscle layer of back?

Answer 2

minor muscles of respiration

Question 3

Fxn of deep muscles of back?

Answer 3

move vertebral column

Question 4

Deep muscles of back?

Answer 4

Erector spinae group

(spinalis, longissimus and iliocostalis muscles

Question 5

Origin of deep muscles of back?

Answer 5

Sacrum and spinous processes of lumbar and lower thoracic vertebrae

Question 6

Insertion of iliocostalis muscle?

Answer 6

angles of ribs

Question 7

Insertion of longissimus muscle?

Answer 7

Transverse process of vertebrae at all levels up to base of skull

Question 8

Insertion of spinalis muscle?

Answer 8

interconnect spinous processes of adjacent vertebrae

Question 9

Innervation of erector spinae muscle group?

Answer 9

Dorsal primary rami

Question 10

Kyphosis

Answer 10

abnormal curvature of spine in thoracic region; producing hunch back

Question 11

Scoliosis

Answer 11

abnormal lateral curvature of spine

Question 12

Lordosis

Answer 12

abnormal curvature of spine in lumbar region, producing sway-back deformity