LOWER LIMB - Neurovasc

Question 1

Femoral Triangle Boundaries

Answer 1

INGUINAL LIGAMENT

ADDUCTOR LONGUS (MEDIAL)

SARTORIUS (LATERAL)

Question 2

Femoral Triangle Floor

Answer 2

PECTINEUS
&
ILIOPSOAS

Question 3

Contents of Femoral Triangle & Functons (plus order lateral to medial)

Answer 3

NAVEL
*nerve/art/vein/empty/lymph nodes

FEMORAL ART (Ext. Iliac. Art.)

FEMORAL. VEIN. (grat saphenous vein and popliteal vein)

FEMORAL N = innervates the anterior compartment of the thigh, and provides sensory branches for the leg and foot.

Question 4

Passage of the femoral artery

Answer 4

Arises at the infuinal ligament as a cont. of the ext iliac artery

Passes the thigh midway betwen the anterior iliac spine and the pubic symphysis

The profunda femoris is the deep artery

Question 5

What are the main motor nerves of the lumbar plexus supplying the lower limb

Answer 5

OBTURATOR NERVE
* medial thigh

FEMORAL N.
* anterior thigh

both L2, L3, L4 roots

Question 6

Identify a main sensory n of the lumbar plex. supplying LLimb

Answer 6

LATERAL CUTANEOUS FEMORAL
(L2, L3)
*anterior+lateral thgh down to knee

Question 7

Lumbar Plexus In-Situ

Answer 7

OBTURATOR N (most medial) often travels most vertically

FEMORAL N.: thickest

Genitofemoral: thinner and closely associated with femoral

Lateral Femoral Cutaneous: alone and will diagonally go towards inguinal ligament

Question 8

Where is the lumbar plexus found?

Answer 8

The lumbar plexus lies within the psoas major muscle, between its anterior and posterior masses.

Question 9

Sciatic Nerve

Answer 9

roots of L4-S3 - it’s thick and it goes to the knee

runs through the buttock and down the lower limb.

one of the main branches of the sacral plexus

divides into the TIBIAL N. & COMMON. FIBULAR N. at the popliteal fossa

*largest N in-situ

Question 10

Pedundal N.

Answer 10

(S2-S4)
innervates perineum and pelvic floor

*most medial in-situ

Question 11

Superior Gluteal N.

Answer 11

(L4-S1) - a whore and judging nuns (bc of bums)
innervates G. Medius, G. Minimus, Tensor Fasciae Latae

*most supero-lateral in-situ

Question 12

Inferior Gluteal N.

Answer 12

(L5-S2) - on IG live I did a poo (also showed my ass)

innervates only Gluteus Maximus

*inferior to superior gluteal N. in-situ

Question 13

Nerve to Piriformis & Posterior Femoral Cutaneous N. In-Situ

Answer 13

N to Piriformis is in between Sciatic and Inf. Gluteal N.

whereas Post. Femoral Cutaneous N. is found in between Sciatic N and Pudendal

Question 14

What are the 2 superficial veins of the LL

Answer 14

GREAT SAPHENOUS VEIN = runs medially along the LL calf

AND

LESSER SAPHENOUS VEIN = runs at the back of the calf

*begin from dorsal venous arch

Question 15

Which superficial vein empties into the femoral vein?

Answer 15

G. saphenous + POPLITEAL VEIN

Question 16

Which superficial vein empties into the popliteal vein?

Answer 16

L SAPHENOUS V.
+
TIBIAL VEINS

Question 17

Where do the lymphatic vessels associated with G saphenous v. drain into?

Answer 17

Superficial inguinal nodes; whereby enlargements of the inguinal LN d/t infections to any structure lying inferior to the level of the umbilicus incl. the LL

Question 18

Where do the lymphatic vessels associated with L saphenous v. drain into?

Answer 18

Superficial inguinal

Question 19

What dermatome covers the anterior and posterior of the knee?

Answer 19

L3

S2

Question 20

Dermatome of the big toe and little toe?

Answer 20

L5

S1