Venous Anatomy Flashcards
Where are superficial veins located?
closer to the skins surface
Where are deep veins located?
located in the muscles fascia
what is the longest vein in the body?
great saphenous
what are the two parts of the superficial venous system?
- great saphenous
- small saphenous
how much blood returns to the heart in the deep venous system?
90-95%
how does the deep venous system work?
drains blood for lower extremities
what is elacticity?
ability to return to size and shape
what is compliance?
ability to yield increased pressure
who is more compliant, less elastic?
veins
what do valves help prevent?
help prevent reflux (backflow) in the lower pressure veins
which has larger lumens and thinner walls
veins
the biggest difference between veins and arteries:
valves
veins also have over 2mm in diameter have bicuspid vlaves to prevent blood flowing backwards- is also known as ____.
reflux
veins have ___ lumens and ______ walls
- larger
- thinner
Valves help prevent _____ in the lower pressure veins
reflux (backflow)
the ability to return to original shape
elasticity
the ability to yeild to pressure
compliance
What is the optimal post-stent diameter of the Common Iliac Vein (CIV)?
16-18mm
What is the optimal post-stent area of the External Iliac Vein (EIV)?
150mm^2
True or False: Veins are more elastic but less compliant than arteries.
False
At what time point is a clot considered “acute”?
<14 days old
True or False: May-Thurner Syndrome (MTS) is the compression of the left iliac vein between the right iliac artery and the lumbar spine.
True
