Spine

Question 1

Answer 1

1. Rt occipital condyle
2. Lt vertebral A*
3. Cerebellar tonsils**

*Appears as streak as it heads fo rmidline in front of the medulla oblongata, to join the Rt vertebral and form the basilar A at the inferior and anterior to the pons.

** At the foramen magnum, entering the posterior fossa of the cranium.

Question 2

Answer 2

4. Spinal cord
5. Cerebrospinal fluid in subarachnoid space
6. Superior articular process of C1 (Atlas)*
7. Anterior neural arch of C1 **

*near the atlantooccipital joint

**the tubercle of the anterior arch is where teh arrow is pointing, but not seen here.

Question 3

Answer 3

1. Vertebral A
2. Odontoid process (dens)
3. Lt superior articular process of C1

Question 4

Answer 4

1. Base of odontoid
2. Inferior articular process of C1*

* Just superior to atlantoaxial joint

Question 5

Answer 5

1. Articular pillars*
2. Body of C3
3. C3-C4 intervertebral disc space
4. Interspinous ligament

* The stack of inferior and superior articulating processes, and the zygapophyseal joints they form

Question 6

Answer 6

5. Odontoid (dens)
6. Body of C2
7. Anterior tubercle of C1
8. Posterior tubercle of C1
9. Cerebellar tonsils
10. Rt & Lt vertebral arteries
11. Basilar artery
12. Pons
13. Medulla Oblongata

Question 7

Answer 7

1. Rt & Lt Longus Colli
2. Cervical spinous processes
3. Lt cerebellar tonsils
4. Rt trapezius muscle

Question 8

Answer 8

5. 4th ventricle
6. Thecal (dural) sac
7. Lt Pedicle of C4
8. Lateral mass of C5*
9. C4-C5 Lt zygapophyseal joint
10. Spinal cord

*Comprised of the inferior and superior articulating processes, and the zygapophyseal joints they form

Question 9

Answer 9

1. Pedicles
2. Medulla Oblongata
3. C3-C4 interspace
4. Body of C2
5. Rt atlantoaxial joint
6. Rt lateral mass of C1
7. Lt Atlantooccipital joint
8. Odontoid process of C2 (dens)
9. Rt occipital condyle

Question 10

Answer 10

5. Rt atlantoaxial joint
6. Lt atlantooccipital joint
7. Odontoid process of C2 (dens)

**10. Rt & Lt vertebral arteries**

Question 11

Answer 11

1. Neck of T8 rib (81)
2. Costovertebral articulation (joint) of T8 Rt rib
3. T7-T8 intervertebral disc
4. Esophagus
5. Aorta

Question 12

Answer 12

6. Body of T8
7. Cerebrospinal fluid in the subarachoid space
8. Spinal cord
9. Head Lt rib
10. Tubercle of T8 Lt rib
11. Costotransverse articulation of T8 Lt rib*

*Although the transverse process is not seen, the tubercle articulates with the transverse costal facet on it.

Question 13

Answer 13

1. Intervertebral foramen
2. Dorsal root ganglion
3. Descending aorta

Question 14

Answer 14

4. Conus medullaris
5. Lumbar enlargement*
6. White matter
7. Gray matter

*Immediately above the conus, which is at L1-L2

Question 15

Answer 15

1. Rt transverse process*
2. Cauda equina
3. Lt pedicle
4. Rt psoas major muscle
5. Rt & Lt common iliac A
6. Rt & Lt common iliac V

* Not seen in its entirety

Question 16

Answer 16

7. Rt Inferior articular process of L5
8. Rt zygapophyseal articulation of L5-S1
9. Rt Superior articular process of S1
10. Herniated disc impinging Lt nerve root

Question 17

Answer 17

1. Spinous process
2. Lt lamina
3. Intervertebral foramen
4. Dorsal root (spinal) ganglion

Question 18

Answer 18

5. Ligamentum flavum
6. Posterior longitudinal ligament
7. Inferior vena cava
8. Aorta
9. Erector spinae muscles

Question 19

Answer 19

1. Spinous process
2. Nuclear pulposus
3. Anulus fibrosus
4. Interspinous ligament
5. Herniated nuclear pulposus
6. Anterior longitudinal ligament
7. Posterior longitudinal ligament

Question 20

Answer 20

8. Rt ilium
9. Dural sac
10. Filum terminale in sacral canal
11. Sacrum
12. Lt sacroiliac joint