Module 1: Unit 7 Flashcards
What is the largest branch of the subclavian artery?
A. Posterior spinal artery
B. Vertebral artery
C. Anterior spinal artery
D. Radicular artery
B
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
A
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
C
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
B
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
A
The anterior spinal artery arises from which arteries?
A. Posterior spinal arteries
B. Aortic arch
C. Radicular arteries
D. Vertebral arteries
D
Name the veins of the spinal column.
External venous plexus
Internal venous plexus
Basic external veins
Intervertebral veins
Name the arteries of the spinal cord.
Anterior spinal artery (1)
Posterior spinal arteries (2)
Radicular arteries
*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
What type of artery has the largest branch of subclavian artery? And how many divisions are there?
Vertebral artery, divided into four parts
Vertebral Artery Section 1: Explain.
From subclavian artery to C7; between the Lingus coil and anterior scalene; in front of C7 TP
Vertebral Artery Section 2: Explain.
C6-C1; enters at the transverse foramen of C6; Ascends through all transverse foramen
Vertebral Artery Section 3: Explain.
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)
Vertebral Artery Section 4: Explain.
Foramen magnum to basilar artery; rests on the posterior Clive’s of the sphenoid bone; left and right VA’s merge
Name the arteries of the spinal cord.
Anterior spinal artery (1) (ASA)
Posterior Spinal arteries (2) (PSA)
Radicular arteries
The anterior spinal artery supplies what portion of the spinal cord?
Supplies anterior 2/3’s of cord
At what portion of the spinal cord does the ASA narrow?
Conus Medullaries (located at T12/L1)
How many posterior spinal arteries are there? Where do they branch from? and what portion of the spinal cord do they supply?
2
Vertebral arteries
Supply the posterior 1/3 of the cord
Where do the posterior spinal arteries end?
Conus Medullaris
What are Radicular Arteries known for and what do they do?
“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
Refer to Slide 198 for diagram* Dorsal and Ventral picture
Describe the artery of Adam Kiewicz (aka arteria Radicular is Magna (ARM)) and what section into where it feeds.
T10-T12
Down, the artery of kiewicz is the main feeder vessel to the anterior spinal artery
*NOTE: It arises from left posterior intercostals
Are there valves within the veins of the spinal column? What is the batsons venous plexus? And what does it function within?
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.
List the external plexuses and differentiate between the two?
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.
What is the internal venous plexus?
Vein Inside the spinal canal
*Has an anterior internal plexus
*Has posterior internal plexus
What do intervertebral veins function to do?
Drain blood from:
- Spinal cord
- Internal venous plexus
- External venous plexus
*IV pass through the IVFs
What are Basicertebral veins?
Network of veins within the vertebral body. Creates a prominent channel into the vertebral body.
