Thorasic Spine

Question 1

Explain the curve of the thorasic spine

Answer 1

It is a kyphotic curve and is a priamry curve

Question 2

Describe the structure of a thorasic vertebra.

Answer 2

• spinous process are pointed more downwards
• lamina
• Transverse process provide the articualtion for the rib
• pedicle
• Vertebral body providde articualtion for rib
• Vertebral canal
• Vertebral foramen

Question 3

What movements occur at the Thorasic spine?

Answer 3

Flexion
Extension
Side flexion
Rotation

Question 4

How mamny ribs are there and where do they articulate?

Answer 4

There are 12 ribs
Ribs 1–7 are true ribs which articulate with the sternum
Ribs 8-10 articualte with the costal cartilidge
11-12 dont articulate

Question 5

What are the two unique joints in the thorasic spine?

Answer 5

Costotransverse - Articulation between the rib and the transverse process
Costovertebral Joint - Articulation between the rib and the vertebral body

Question 6

What ligament supports the Costotransverse and costovertebral joint?

Answer 6

The costotransverse ligament fills the gap between rib and corresponding transverse process

Question 7

Which muscles contribute to Flexion of Thorasic spine

Answer 7

Rectus abdominis
Int/ext obliques
Psoas major

Question 8

Extension of the thorasic spine

Answer 8

Erector spinae
Multifidus
Quad lumborum

Question 9

Side flexion of thorasic

Answer 9

Quaf Lumborum
Ext/Int oblique

Question 10

Rotation

Answer 10

Int/Ext oblique

Question 11

Rectus Abdominis (A)

Answer 11

M - Long muscle of the anterior abdominal wall
O - Pubic symphysis pubic crest
I - Xiphoid process and costal cartilidge of ribs 5-7
N - Intercostal and Subcostal nerve
A - Thorasic flexion and compression of abdominal viscera

Question 12

Erector Spinae (a)

Answer 12

M - Long muscle spanning the length of the spine divided into 3 parts
Spinalis - most medial of the muscle groups
Longissimus - intermediate
Iliocostalis - most lateral
A - Extesnion and lateral flexion of teh spine
N - All supplied by the anterior Rami

Question 13

Multifidus (a)

Answer 13

M - Short triangular muscles taht make up the deep back muscles
O - Transverse process of the thorasic vertebra
I - Lateral aspect of the spinous processes of the vertebra 2-5 levels superior from its origin
A - Extension and Bilateral flexion
N - Medial branches of the poseterior rami

Question 14

Psoas Major (A)

Answer 14

M - Fusiform muscle within the lumbar trunk
O - Body’s and intervertbral disc of T12- L4. Transverse of L1-5
I - Lesser trochanter of femur
A - Flexion of the trunk, lateral flexion
N - Anterior rami