Anatomy

Question 1

What does the Atlas (C1) NOT have?

Answer 1

Verterbral body

Question 2

What makes the Axis unique?

Answer 2

contains the dens (odontoid process)

Question 3

What are the parts that make up a typical Cervical vertebra?

Answer 3

Body
Transverse process
Transverse foramina
Pedicles
Lamina
Spinous Process

Question 4

What angle are the intervertebral formamina found at for c-spine?

Answer 4

45 degrees from MSP

15 degrees inferiorly

Question 5

What makes the T-spine unique?

Answer 5

the transverse processes contain a small concave facet for articulation w/ tubercle of rib

Question 6

What angle is are the zygapophyseal joints in the t-spine found at?

Answer 6

15-20 degrees from MCP

70-75 degrees from MSP

Question 7

What are the mamillary process in the L-spine?

Answer 7

smooth, rounded projection on the back of each superior articular process

Question 8

What is the average angle of the zygapophyseal joints in the L spine?

Answer 8

30-60 degrees to MSP

Question 9

what makes the 5th intervertebral foramina of the l-spine different?

Answer 9

it turns slightly anteriorly

Question 10

Orbitomeatal line is extended 10 degrees from the perpendicular. What is the degree of angulation & direction of the central ray in order to obtain a 30 degree frontooccipital (Towne) projection?

a. 20 degree caudad
b. 20 degree cephalad
c. 40 degree caudad
d. 40 degree cephalad

Answer 10

c. 40 degree caudad

Towne projection requires a 30 degree caudad angulation to the perpendiculat OML. Thus, with a 10 degree extension of the OML, a 40 degree caudad angulation is required.