Intrinsic Muscles of the Back

Question 1

Which muscle group is found in all regions of all regions in the spine (but best developed in the thoracic spine) and connect the transverse process below to the spinous process of two vertebrae above? *

Answer 1

Rotatores

Question 2

Splenius Cervicis

Answer 2

O: spinous process of thoracic spine (T4-7)
I: transverse process of C1-3
A: extend and rotate the head and neck
Innervation: posterior rami of lower cervical nerves

Question 3

Splenius Capitis

Answer 3

O: spinous process of C7-T6
I: back of the skull (occipital bone, mastoid process)
A: extend & rotate the head and neck
Nerve supply: posterior rami of middle cervical nerves
Covers the erector spine muscle

Question 4

Iliocostalis group

Answer 4

Most lateral group of the erector spinae muscles
Cervicis, Thoracis , Lumborum

O: Sacrum, iliac crest, ribs
Inserts: angle of the ribs, transverse processes of lower cervical vertebrae, mastoid process

Extends, rotates the vertebral column
Rotate to same side

Question 5

Longissimus Group

Answer 5

I: transverse processes of all vertebrae, mastoid process

Question 6

Spinous Group

Answer 6

Capitis, Cervicis, Thoracis

Inserts into the spinous processes of adjacent vertebrae

Question 7

Which muscle group is generally found in the thoracic and and cervical regions spanning four to six vertebrae to connect the transverse process below to the spinous processes above? *

Answer 7

Rotatores muscles are generally more develop in the thoracic region and span

Question 8

This deep muscle group is found in the thoracic and cervical region of the spine and spans 4-6 vertebraes from their point of origin to their attachment and attaches to the base of the skull

Answer 8

Semispinalis capitis and cervicis & thoracis

Question 9

These collections of muscles fibers span the length of the spinal column and most developed in the lumbar spine.

Passes from lateral to medial, connecting to all spinous processes of the vertebra column

Answer 9

Multifidus

Question 10

Which muscle group is found in all regions of all regions in the spine (but best developed in the lumbar spine) and connect the transverse process below to the spinous process of two to four vertebrae above?

Answer 10

Multifidus

Question 11

Which muscle groups generally spans the spine from the common tendon of origin to connect the spinous processes of adjacent vertebrae and is most common in the thoracic spine and generally absent in the cervical spine?

Answer 11

spinalis