Vertabral Column

Question 0

Movements of the VC ( vertebral column ) 4 actions

Answer 0

1) flexion of VC - bending forward
2) extension if VC - coming back up
3) lateral flexion of VC - side to side
4) rotation of VC - twist

Question 1

Extensor muscles are

Answer 1

• Posterior to your vertebral column

Question 2

Extensor muscles of the VC -

Answer 2

• true back muscles
• the extensor muscles of the VC form a common group. All these muscles arise from a common embryonic mass that is situated on the posterior

Question 3

4 muscle groups of the VC

Answer 3

1) spinotransversealis - group
• splenius capitis - muscle
• splenius cervicis - muscle

2) erector spinae - group
• iliocostalis - muscle
• longissimus - muscle
• spinalis - muscle

3 ) transversospinalis - group
• semispinalis - muscle
• multifidus - muscle

4) suboccipital - group

Question 4

2 muscles in the spinotransversealis group …

Answer 4

1)  Splenius capitis
   • strap like muscle 
   • very superficial 
   • from spinous process to head 
   • extend head and neck 

2) splenius cervicis 
   • strap like muscle
   • spinous process to the neck 
   • extend and rotates the neck 
   • lateral flexion of the neck

Question 5

3 muscles of the erector spinae group ..

I
L
S

Answer 5

1) iliocostalis 
   • ropy, strap like muscle 
   • most lateral
   • thick and powerful at lateral spine
   • tendinous at sacral region
   • extion of the VC 
   • stabilize VC 

2) longissimus 
   • between iliocostalis and spinalis
   • mass of muscle begins at L3
   • extension of VC and head
   • rotate head and neck to same side 

3) spinalis
• most medial
• superior part of the muscle is found in the laminate groove
• extension of the VC and head
•rotate head,neck and VC to opposite side

Question 6

2 muscles of the transversospinalis group

Answer 6

1) semispinalis
• transverse process to superior process
• extends head and VC
• week rotation yo opposite side

2) multifidus 
   • lies deep to semispinalis 
   • between sacrum and C2 (axis) 
   • very thick in lumbar region
   • powerful extensor in lumbar spine
   • offers support in VC 
   • increase proprioceptive monitors of VC
   • tells brain where spinal column is

Question 7

Suboccipital group

Answer 7

• small group of muscles that attach between occipital bone and atlas/axis
• extends head
• rotates head
• fine tuned movements of the head and eyes
• deepest group of the extensor muscles

Question 8

5 Muscles that attach to the head

Answer 8

1) splenius captis
2) longissimus
3) spinalis
4) semispinalis
5) suboccipital

Question 9

8 parts of the vertebral

Answer 9

1) vertebral body
2) transverse process
3) spinous process
4) lamina
5) pedicle
6) vertabral foramen
7) intervertebral foramen
8) facets