femoral vein
Definition
- Noun:
- A major vein located in the thigh. It is the continuation of the popliteal vein (behind the knee) and ascends alongside the femoral artery within a protective sheath of tissue. It drains deoxygenated blood from the lower limb and ultimately becomes the external iliac vein as it passes into the pelvis.
Usage
- The femoral vein is a common site for medical procedures such as inserting a central venous catheter or performing venous blood draws in emergency situations.
- In anatomy, the relationship between the femoral vein, femoral artery, and femoral nerve within the femoral triangle is a critical landmark.
- Deep vein thrombosis (DVT) can occur in the femoral vein, posing a serious health risk.
Examples
- The ultrasound confirmed a clot in the patient's left femoral vein.
- Surgeons took care to avoid the femoral vein when accessing the artery for the procedure.
- The femoral vein is typically larger in diameter than the femoral artery.
Advanced Usage
- "Common femoral vein": Refers to the segment of the femoral vein before it is joined by the deep femoral vein (profunda femoris vein). This is a precise anatomical distinction.
- "Superficial femoral vein": An older term for the segment of the femoral vein within the adductor canal. Modern anatomical terminology discourages this term to prevent confusion, as it is a vein, not a superficial one.
Variants and Related Words
- Femoral (adjective): Pertaining to the femur (thigh bone) or the region of the thigh.
- Example: The femoral nerve provides sensation to parts of the thigh.
- Popliteal vein (noun): The vein behind the knee that continues upward as the femoral vein.
- External iliac vein (noun): The vein in the pelvis that the femoral vein becomes.
Synonyms
- Venous channel of the thigh (descriptive synonym, not common in clinical use).
Notes on Meaning
The term femoral vein refers specifically to this single, defined anatomical structure. It is not used in a general or metaphorical sense. Its meaning is fixed within the contexts of anatomy, medicine, and surgery.
Noun
-
a vein that accompanies the femoral artery in the same sheath; a continuation of the popliteal vein; becomes the external iliac vein
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