Lec. 12: blood, lymph, and nerves of lower extremity Flashcards
the ANT primary rami of nerve roots form what
plexuses
the femoral triangle contains what (2)
-femoral vascular bundle
-femoral sheath
what lies outside of but beside the femoral sheath
femoral nerve
what does the femoral sheath enclose (3)
-femoral artery
-femoral vein
-femoral canal
what does the femoral canal enclose
deep inguinal lymph nodes
which 3 mms form the floor of the femoral triangle
iliopsoas, pectineus, and ADD longus (MED part)
the subsartorial/adductor canal contains what (4)
femoral artery and vein, nerve to vastus medialis, and saphenous nerve
the subsartorial/adductor canal runs from where to where
INF angle of femoral triangle to adductor hiatus
what forms the INF angle of the femoral triangle
LAT border: MED aspect of sartorius
MED border: LAT and ANT aspect of adductor longus
arrangement of the lumbar and sacral plexuses allows ___ ___ from different segments of the spinal cord to be distributed together to the ___ ___
individual nerves, lower extremity
the lumbar plexus is formed by which nerve roots
(L1), L2, L3, L4
sacral plexus is formed by which nerve roots
L4, L5, S1, S2, S3, S4
coccygeal plexus is formed by which nerve roots
S4, S5, Co
nerves of the lumbar plexus (6)
- iliohypogastric
- ilioinguinal
- genitofemoral
- LAT cutaneous n. of thigh
- femoral
- obturator
11 nerves of the sacral plexus
-sciatic
-SUP gluteal
-INF gluteal
-n to piriformis
-n to quadratus femoris and INF gemellus
-n to obturator internus and SUP gemellus
-POST cutaneous n to the thigh
-perforating cutaneous
-pudendal
-nerve to levator ani and coccygeus
-lumbosacral trunk
which 2 nerves come from the sciatic nerve
tibial and common fibular
which mm splits the greater sciatic notch in two
piriformis
what neurovascular structure(s) are SUP to piriformis at the greater sciatic notch
SUP gluteal neurovascular bundle
neurovascular structure(s) that’re INF to piriformis at the greater sciatic notch
-INF gluteal n
-sciatic n
-POST femoral cutaneous n
-n to quadratus femoris and INF gemellus
-n to obturator internus and SUP gemellus
-pudendal neurovascular bundle
which two neurovascular structures exit the pelvic cavity INF to piriformis at the greater sciatic notch but then reenter through the lesser sciatic notch
-n to obturator internus and SUP gemellus
-pudendal neurovascular bundle
where does the sciatic n branch into the tibial and common fibular nerves
popliteal fossa
where does the common fibular n branch into the superficial and deep fibular nerves
b/w the fibular head and fib long
the LAT sural cutaneous innervates the cutaneous posterolateral aspect of SUP leg. which nerve does it come from
common fibular
nerves from the knee down (6)
-common fibular
-superficial fibular
-deep fibular
-tibial
-MED plantar n
-LAT plantar n
what’re the 3 borders of the subsartorial/adductor canal
LAT: vastus medialis
MED: adductor longus
Covered by: sartorius
starting at the abdominal aorta give order of arteries down to the ankle (not including all the branches)
abdominal aorta–> common iliac arteries –> internal and external iliac arteries –> femoral artery (from external iliac) –> popliteal artery –> ANT and POST tibial arteries –> fibular artery (from POST tib artery)
which vein drains the deeper structures of the lower limb
femoral vein
primary superficial vein of lower limb
great saphenous vein
lymph nodes of the lower extremity (3)
-popliteal
-superficial inguinal
-deep inguinal
