Lower Extremity Vasculature Flashcards Preview

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Flashcards in Lower Extremity Vasculature Deck (41):

Femoral Triangle Boundaries

Inguinal ligament (superior). Adductor Longus (Medial). Sartorius Muscle (Lateral). Pectineus/adductor longus/Iliopsoas (Floor). Fascia Lata (Roof).


Contents of Femoral Triangle

Femoral nerve/sheath


Contents of femoral sheath

Femoral artery/vein/canal


Contents of femoral canal



What is the superior border of the femoral artery?

The inguinal ligament (superior is the external iliac artery)


Path of the femoral artery

Becomes femoral below the inguinal ligament, runs thru the anterior compartment of the thigh, runs thru the femoral triangle, thru the adductor canal, into the popliteal fossa, changing into the popliteal artery.


What branches of the femoral artery supply the cutaneous regions of the upper thigh, lower abdomen, and perineum?

Superficial circumflex iliac A. Superficial epigastric A. Superficial external pudendal A. Deep External pudendal A.


What path does the deep artery of the thigh take?

Is parallel, but posterior to femoral artery. Runs between pectineus and adductor longus, penetrates adductor magnus to anastamose with branches of the popliteal artery behind the knee.


Path of Media Circumflex Femoral Artery

Passes posteriomedially around the shaft of the femur between pectineous and iliopsoas, then between obturator externus and adductor brevis muscles. Small branch enters hip joint to supply femur head/neck then anastamoses with acetabular branch of obturator artery/inferior gluteal artery/1st perforating artery/lateral circumflex femoral artery


Path/Brances of Lateral Circumflex Femoral Artery

Arises from deep artery of the thigh, passes laterally deep to the sartorius and rectus femoris. Gives rise to Ascending, Transverse, and Descending branches.


Ascending branch of lateral circumflex femoral artery

Ascends deep to tensor fascia latae. Anastamoses with superior gluteal artery/branch of medial circumflex femoral artery. Supplies head/neck of femur


Transverse branch of lateral circumflex femoral artery

Passes deep to rectus femoris muscle. Anastamoses with medial circumflex femoral artery/inferior gluteal artery/1st perforating artery to form cruciate anastomoses around the hip


Descending branch of lateral circumflex femoral artery

Passes deep to rectus femoris. Anastomoses with medial circumflex femoral artery. Passes inferiorly on vastus intermedius to anastomose with genicular arteries at the knee


Perforating arteries

Branch from deep artery of the thigh. All branches penetrate the adductor magnus to supply the posterior compartment of the thigh. Have both ascending and descending branches that anastomose


Internal Iliac Artery: Arises from where and usual divisions

Arises from common iliac artery. Commonly divides into anterior and posterior divisions


Anterior division of Internal Iliac Artery branches

Umbilical, Obturator, Inferior vesical/vaginal, Middle rectal, Internal pudendal, Inferior Gluteal


Umbilical Artery

Is only present en utero. Turns into the medial umbilical ligament


Superior Vesicular Artery

Arises from inferior surface of umbilical artery. Descends to supply the supolateral bladder. Can also supply ductus deferens in males


Obturator Artery

Enters medial compartment of thigh via obturator canal. Bifurcates into anterior/posterior. Anastomoses with inferior gluteal artery/medial circ femoral artery. Acetabular branch comes off to supply fovea of head of femur


Anterior branch of obturator artery

Supplies pectineus, obturator externus, adductor muscles, gracilis


Posterior branch of obturator artery

Supplies some deep gluteal muscles


Inferior Vesical Artery/Vaginal Artery

Courses towards fundus of bladder. Supplies bladder, seminal vesicles, and prostate


Middle Rectal Artery

Courses medially to supply the rectum. Anastomoses with superior rectal/inferior rectal


Internal Pudendal Artery

Passes thru greater sciatic foramen inferior to piriformis muscle, passes lesser sciatic foramen to enter perineum (main artery). Supplies erectile tissue of clitoris and penis


Inferior Gluteal Artery

Passes b/t anterior rami of S1/2 OR S2/3. Leaves pelvic cavity via greater sciatic foramen inferior to piriformis. Large/terminal branch of anterior trunk of internal iliac artery


Posterior Division of Internal Iliac Artery Branches

Iliolumbar, Lateral Sacral, Superior Gluteal


Iliolumbar Artery

Supplies posterior abdominal wall, psoas, quadratus lumborum, cauda equine, iliac fossa


Lateral Sacral Arteries

Runs along pelvic wall, gives rise to branches that pass anterior to sacral foramina


Superior Gluteal Artery

Largest branch of internal iliac artery. Terminal continuation of posterior trunk. Runs posteriorly, passing thru lumbosacral trunk/anterior ramus S1, enters gluteal region via greater sciatic foramen


Adductor Canal

Fascial compartment deep to sartorius muscle. Descends from apex of femoral triangle, medially down thigh, posteriorly thru aperature in adductor magnus, into popliteal fossa. Contains femoral artery/vein and 2 branches of femoral nerve


Popliteal Fossa Contents

Popliteal artery/vein, Tibial nerve, common fibular nerve, Plantaris/popliteus muscles, popliteal lymph nodes


Popliteal artery pathway

Continuation of femoral artery, passes from adductor canal, thru hiatius, divides into anterior/posterior tibial arteries.


Popliteal vein

Extends into the adductor hiatus to become femoral vein, receives small saphenous vein


Boundaries of popliteal Fossa

Superolateral: biceps femoris. Superomedial: semitendinosus and semimembranosus. Interior: gastrocneumius heads (lateral/medial). Posterior: Popliteal fascia/skin. Anterior: Femur, joint capsule, tibia.


Genicular Arteries

Branches of popliteal arteries. Form arterial anastomoses around the knee joint.


Posterior Tibial Artery

Larger of the 2 popliteal artery branches. Supplies posterior/lateral compartments of the leg. Distal between superficial and deep compartments of posterior leg. Passes thru tarsal tunnel behind medial malleolus into the sole of the foot


Fibular artery

Arises from posterior tibial artery distal to inferior border of popliteus muscle. Runs between tibilais posterior and flexor hallucis.


Medial Plantar Artery

Runs under abductor hallucis, then b/t it and flexor digitorum brevis.


Anterior Tibial Artery

Horizontal portion of bifurcation of popliteal artery. Passes thru IO membrane to run anteriorly b/t tibialis anterior and extensor hallucis longus. Becomes dorsalis pedis artery in the foot


Small Saphenous Vein

Formed posterior to lateral malleolus, ascends posteriorly up the leg.


Great Saphenous Vein

Anterior to medial malleolus, ascends along medial aspect of leg/thigh until it pierces fascia lata of femoral triangle