L5: Vessels & Nerves of Lower Extremity Flashcards

1
Q

femoral artery is the continuation of the ?

A

external iliac artery

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2
Q

origin of femoral artery

A

begins deep to inguinal lig.

enclosed w/in femoral sheath

becomes popliteal artery at adductor hiatus

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3
Q

proximal branches of femoral art.

A

superficial epigastric a
superficial circumflex iliac a
superficial external pudendal a.

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4
Q

superficial epigastric artery

A

passes thru saphenous hiatus

crosses inguinal lig. toward umbilicus

anastomoses w/ inf. epigastric art.

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5
Q

superficial circumflex iliac artery

A

passes thru saphenous hiatus

passes along inguinal lig. towards ASIS

anastomoses w/ deep circumflex iliac artery

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6
Q

superficial external pudendal artery

A

passes thru saphenous hiatus

passes medially toward external genitalia

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7
Q

deep branches of femoral artery

A

deep external pudendal
descending genicular
profundal femoral or deep femoral

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8
Q

branches of produnda femora

A

medial femoral circumflex
lat. femoral circumflex
perforating arteries - 3
descending genicular

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9
Q

deep external pudendal

A

passes medially acros pectineus and adductor longus

becomes superficial to supply external genitalia

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10
Q

descending genicular artery

A

arises in adductor canal

musculoarticular branch – part of genicular anastomoses

saphenous branch – runs w/ saphenous nerve

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11
Q

profundal femora artery

A

arises from deep side of femoral art. w/in f triangle

largest branch of femoral a.

passes post. to adductor longus

terminates as a 4th terminating artery

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12
Q

medial femoral circumflex artery

A

may come directly off femoral a.

leaves femoral triangle between iliopsoas and pectineus

supplies hip joint, upper thigh, glutes

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13
Q

branches of medial femoral circumflex artery

A

ascending branch – anastomose w/ inf. gluteal

transverse branch – anastomose w/ lat. femoral circumflex a.

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14
Q

lateral femoral circumflex artery

A

may come directly off femoral a.

passes laterally deep to rectus femoris and sartorius

supplies hip joint, upper thigh, glutes

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15
Q

branches of lateral femoral circumflex artery

A

ascending branch – anas w/ superior gluteal a.

transverse branch – anas w/ medial femoral circ. a.

descending branch – anas w/ genicular arteries

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16
Q

popliteal artery is a continuation of the ?

A

femoral artery

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17
Q

popliteal artery

A

begins at adductor hiatus

ends at inf. border of popliteus muscle

most anterior structure in popliteal fossa

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18
Q

branches of popliteal artery at ending

A

branches into anterior and posterior tibial arteries

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19
Q

branches off popliteal artery

A

med. and lat. superior genicular arteries
med. and lat. inferior genicular arteries

middle genicular a. and sural(calf) arteries

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20
Q

what is the cruciate anastomosis?

A

joins the internal iliac to femoral artery

a bypass for femoral or external iliac arteries

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21
Q

cruciate anastomosis includes branches from ?

A

medial femoral circumflex

lat. femoral circumflex

inferior gluteal a.

first perforating artery

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22
Q

obturator artery

A

arises from internal iliac in pelvis

enters thigh thru obturator canal

accompanied by ant/post obturator nerve branches

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23
Q

obturator artery gives rise to ?

A

anterior and poster branches

acetabular artery

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24
Q

acetabular artery

A

to head of femur via ligamentum teres

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25
Q

contributors to genicular anastomosis

A
  1. genicular branches of popliteal a.
  2. descending branches of femoral and deep femoral
  3. ascending branches of ant/post tibial arteries
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26
Q

where is the genicular anastomosis?

A

back of the knee

between 2 condyles

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27
Q

anterior tibial artery

A

–terminal branch of popliteal artery
arises at inf. border of popliteus

passes ant. to interosseous memb. between tibia and fibula

accompanied by deep peroneal nerve

28
Q

anterior tibial artery is renamed ? and supplies?

A

renamed dorsalis pedis artery at ankle joint

supplies anterior leg compartment

29
Q

branches of anterior tibial artery

A

ant. tibial recurrent
lat. malleolar a.
med. malleolar a.

30
Q

dorsalis pedis artery

A

continuation of anterior tibial artery post ankle

31
Q

branches of dorsalis pedis artery

A

med. tarsal a.
lat. tarsal a.
arcuate a.
deep plantar a.
first dorsal interosseous a.

32
Q

posterior tibial artery

A

terminal branch of popliteal artery

arises at inf. border of popliteus

passes post. to interosseous memb.

accompanied by tibial nerve

descends on post. surface of tibialis posterior

33
Q

termination of posterior tibial artery

A

terminates deep to flexor retinaculum as:

med. plantar a.
lat. plantar a.

34
Q

superficial veins of lower limb

A

great saphenous

lesser saphenous

35
Q

great saphenous vein

A

drains medial side of dorsal venous arch

passes post. patella

ascends medial thigh

penetrates deep fascia of femoral triangle

dumps into femoral vein

36
Q

lesser saphenous vein

A

drains lateral side of dorsal venous arch

accompanies sural n.

ascends midline of calf

dumps into popliteal vein in popliteal fossa

37
Q

deep veins of lower limb

A

venae comitantes
popliteal vein
communicating veins

38
Q

venae comitantes

A

accompany deep arteries of leg

unite to form popliteal vein in popliteal space

39
Q

popliteal vein

A

passes thru adductor hiatus

renamed femoral vein

40
Q

lymphatics draining medial foot

A

ascend w/ great saphenous vein

end in superficial inguinal lymph nodes

41
Q

superficial inguinal lymph nodes also drain?

A
lower ab wall
external genitalia
perineum
anal region
uterine fundus
42
Q

lymphatics draining lateral foot

A

ascend w/ small saphenous vein

end in lymph nodes in popliteal fossa

ascend w/ femoral vein to deep inguinal nodes

43
Q

drainage pathway of lymph

A

superficial inguinal —> deep inguinal —> external iliacs

44
Q

origins of lower plexuses

A

lumbar L1-L4
lumbosacral trunk L4-5
sacral plexus S1-4

45
Q

lumbar plexus

A

formed in psoas major – branches emerge from lat. and med. sides of muscle to connect to sympathetic trunk

46
Q

lumbar plexus 2 branches emerging

A

from psoas muscle

  1. Iliohypogastric
  2. ilioingual
47
Q

Iliohypogastric

A

to side of buttock and pubis

48
Q

ilioingual

A

to anterior thigh, scrotum and labia majora

49
Q

genitofemoral nerve

A

emerges on ant. surface of psoas major

genital branch enters inguinal canal – scrotum and labia majora, cremaster muscle

femoral branch enters femoral sheath supplies skin over f triangle

50
Q

femoral nerve

A

L2-4
largest branch of lumbar plexus
emerges from lat. side of psoas major
enters thigh behind inguinal lig.

51
Q

femoral nerve supplies

A

in iliac fossa — iliacus and pectineus, femoral artery

distally — sartorius, quadriceps femoris, anterior thigh

52
Q

femoral nerve terminates as

A

saphenous nerve to medial thigh and foot

53
Q

obturator nerve

A

L2-4
emerges med. side of psoas

descends along lateral pelvis wall

enters thigh thru obturator foramen

54
Q

obturator nerve to obturator foramen

A

in the obturator groove it divides into

  1. anterior branch to adductor brevis
  2. post. branch to adductor brevis posteriorly
55
Q

obturator nerve supplies

A

medial thigh muscles

skin on medial thigh

56
Q

nerves of the sacral plexus

A

superior gluteal n
post. femoral cutaneous n
nerves to lat. thigh
sciatic n

57
Q

superior gluteal nerve

A

L4-S1
passes thru greater sciatic notch above piriformis

supplies lat. gluteal

58
Q

posterior femoral cutaneous nerve

A

runs w/ gluteal nerves deep to gluteus max

then runs w/ sciatic nerve and gluteal artery

59
Q

post. femoral cutaneous nerve supplies

A

skin on buttock – via inf. cluneal n.

skin of external genitalia – via perineal branches

skin on back of thigh

60
Q

nerves to lateral thigh

A

inferior gemellus

quadratus femoris

piriformis

61
Q

sciatic nerve

A

fusion of common peroneal and tibial nerves

largest physical nerve in body

exits pelvis thru greater sciatic foramen

descends between gluteus max, greater trochanter, ischial tuberosity

62
Q

sciatic nerve lies on

A

ischium
gemelli
obturator internus
quadratus femoris

63
Q

peripheral nerve injuries

A

all motor function and sensations suppled by nerves distal to injury is lost

total muscle function lost

sensation over more than one dermatome is lost

64
Q

nerve root injuries

A

sensory impairment over 1 dermatome

muscle weakening

may only affect one root or the other

65
Q

nerve root injuries usually affected by ?

A

disc herniation immediately superior to it