Module 1: Unit 7

Question 1

What is the largest branch of the subclavian artery?

A. Posterior spinal artery
B. Vertebral artery
C. Anterior spinal artery
D. Radicular artery

Answer 1

B

Question 2

Which section of the vertebral artery passes through the transverse foramen a of C6 to C1?

A. Section 2
B. Section 3
C. Section 1
D. Section 4

Answer 2

A

Question 3

The anterior spinal artery supplies which portion of the spinal cord?

A. The entire spinal cord
B. The lateral 1/3
C. The anterior 2/3
D. The posterior 1/3

Answer 3

C

Question 4

The artery of Adamkiewicz typically arises from which side of the body?

A. Both sides equally
B. Left side
C. Right side
D. Either side with no preference

Answer 4

B

Question 5

Which arteries are responsible for supplying the posterior 1/3 of the spinal cord?

A. Posterior spinal arteries
B. Anterior spinal arteries
C. Radicular arteries
D. Vertebral arteries

Answer 5

A

Question 6

The anterior spinal artery arises from which arteries?

A. Posterior spinal arteries
B. Aortic arch
C. Radicular arteries
D. Vertebral arteries

Answer 6

D

Question 7

Name the veins of the spinal column.

Answer 7

External venous plexus
Internal venous plexus
Basic external veins
Intervertebral veins

Question 8

Name the arteries of the spinal cord.

Answer 8

Anterior spinal artery (1)
Posterior spinal arteries (2)
Radicular arteries

Question 9

*refer to diagram on slide 170 and know the aortic arch and labels

Example question: from which artery does the vertebral artery stem from? Subclavian

Question 10

What type of artery has the largest branch of subclavian artery? And how many divisions are there?

Answer 10

Vertebral artery, divided into four parts

Question 11

Vertebral Artery Section 1: Explain.

Answer 11

From subclavian artery to C7; between the Lingus coil and anterior scalene; in front of C7 TP

Question 12

Vertebral Artery Section 2: Explain.

Answer 12

C6-C1; enters at the transverse foramen of C6; Ascends through all transverse foramen

Question 13

Vertebral Artery Section 3: Explain.

Answer 13

C1-foramen magnum; VA passes posterior to the lateral mass of the C1 (rests on top of the vertebral notch of the posterior arch, then goes medial)
*passes through the lateral aspect of the posterior atlanto-occipital ligament (posterior ponticle)

Question 14

Vertebral Artery Section 4: Explain.

Answer 14

Foramen magnum to basilar artery; rests on the posterior Clive’s of the sphenoid bone; left and right VA’s merge

Question 15

Name the arteries of the spinal cord.

Answer 15

Anterior spinal artery (1) (ASA)
Posterior Spinal arteries (2) (PSA)
Radicular arteries

Question 16

The anterior spinal artery supplies what portion of the spinal cord?

Answer 16

Supplies anterior 2/3’s of cord

Question 17

At what portion of the spinal cord does the ASA narrow?

Answer 17

Conus Medullaries (located at T12/L1)

Question 18

How many posterior spinal arteries are there? Where do they branch from? and what portion of the spinal cord do they supply?

Answer 18

2
Vertebral arteries
Supply the posterior 1/3 of the cord

Question 19

Where do the posterior spinal arteries end?

Answer 19

Conus Medullaris

Question 20

What are Radicular Arteries known for and what do they do?

Answer 20

“They are known bodies of water that are feeder vessels”

Developed from:
- vertebral arteries
- deep cervical arteries
- posterior intercostal arteries
- lumbar and lateral sacral arteries

Question 21

Refer to Slide 198 for diagram* Dorsal and Ventral picture

Question 22

Describe the artery of Adam Kiewicz (aka arteria Radicular is Magna (ARM)) and what section into where it feeds.

Answer 22

T10-T12
Down, the artery of kiewicz is the main feeder vessel to the anterior spinal artery

*NOTE: It arises from left posterior intercostals

Question 23

Are there valves within the veins of the spinal column? What is the batsons venous plexus? And what does it function within?

Answer 23

No valves within the views of the spinal column. The batsons venous plexus is connected to blood supply from the pelvis, urinary tract, prostate, breasts.

Question 24

List the external plexuses and differentiate between the two?

Answer 24

Anterior external plexus - lies along the anterior surface of the vertebral body. Communicates with base vertebral and intervertebral veins.

Posterior external plexus - Extens along the posterior arch. Pierces through the ligamentum flavum to communicate with he internal plexus.

Question 25

What is the internal venous plexus?

Answer 25

Vein Inside the spinal canal
*Has an anterior internal plexus
*Has posterior internal plexus

Question 26

What do intervertebral veins function to do?

Answer 26

Drain blood from:
- Spinal cord
- Internal venous plexus
- External venous plexus

*IV pass through the IVFs

Question 27

What are Basicertebral veins?

Answer 27

Network of veins within the vertebral body. Creates a prominent channel into the vertebral body.