Unit 4: lower limb Flashcards
the opening in the fascia lata
saphenous opening
thick part of fascia lata
iliotibial tract
Deep fascia froms septa that divide to
compartments and extensor retinaculum
Iliotibial band inserts
gerdys tubercle
Small saphenous
rise halfway up then goes deep, originate from dorsal venous arch; begins at lateral mediolis, cural nerve
Great saphenous
at knee medial to patella, passes anterior to the medial malleolus
clinical importance of gsv
if valves become weak, vein stretches, backflow of blood, varicose veins
perforating veins job
conduct blood to deeper vessels, so muscles can help push blood back
accessory saphenous
from ssv united with another vein
Deep veins
accompany all arteries, paired, contain vascular sheath (to help push blood back), named for vessel
Femoral vein
starts medial* to artery, goes through femoral sheath, retroinguinal space, becomes external iliac
Retroinguinal space
vessels, muscles, and nerves enter and exit; formed by abominal fascia and inguinal ligament, divided into muscle and vascular compartment
empty canal next to vessels
femoral canal allows vessels a place to expand
3 compartments of the femoral sheath
lateral, femoral artery; intermediate, femoral vein; medial, space filled areolar tissue lymph nodes
adductor canal
where sartorius muscle crosses over adductor longus muscle, vein lying posterior to the artery
where the femoral artery and vein leave adductor canal
adductor canal
popliteal vessels
as soon as femoral passes arch
plantar veins
fromthe bottom of the foot form the fibular and posterior tibial veins
perforating vessels
from saphenous veins form the anterior tibial vein in the anterior leg, from the thigh form deep veins which joins the femoral veins in the triangle
big toe drains
dorsal venal arch then GSV and femoral
little to drains
from dorsal arch to SSV, to popliteal to femoral
Compartment syndrome
Fascical compartments are closed spaces, sustained intense use, blunt trauma, burns can lead to edema; pressure rise to point where small nerves and blood vessels are compressed and blood flow pulses are diminished
major arteries of thigh
femoral, deep artery of thigh, obturator, medial and lateral circumflex humoral
circumflex arteries
keep head of femur alive