Anatomy - Lower Limb

Question 1

Only ___ rami innervate the extremities

Answer 1

Ventral

Question 2

Only what part of the ANS innervates the extremities?

Answer 2

only the Symp NS

Question 3

What is the Lumbar Plexus?

Answer 3

L2-L4’s ventral rami join to form the femoral nerve (anterior thigh & joints), and the obturator nerve (medial thigh)

Question 4

Formed: in the psoas muscle from the anterior rami of the upper 4 lumbar nerves

Answer 4

Lumbar plexus & sacral plexus

Question 5

transversus abdominis, internal & external oblique muscles & skin above the inguinal ligament

Answer 5

Iliohypogastric (L1)

Question 6

What does the iliohypogastric nerve innervate?

Answer 6

Comes from L1, innervates transversus abdominis, internal & external oblique muscles & skin above the inguinal ligament

Question 7

as above & supplies skin above symphysis pubis, scrotum, labium majus

Answer 7

Ilioinguinal (L1)

Question 8

divides anterior & posterior supplies skin lateral thigh & knee & lower part of buttocks

Answer 8

Lateral cutaneous (L2&3)

Question 9

What is the Popiteal fossa?

Answer 9

Diamond-shaped space in posterior knee with Popliteal vessels, small saphenous vein, common peroneal and tibial nerves, and lymph nodes.

Question 10

Boundaries of Popliteal Fossa

Answer 10

Superomedial (hamstrings)
Semimembranosus muscle
Semitendinosus muscle (think, cord-like muscle)
Superolateral
Biceps femoris
Inferomedial
Gastrocnemius (medial) head
Inferolateral
Gastrocnemius (lateral) head
plantaris

Question 11

Name 5 muscles supplied by the Obturator ARTERY

Answer 11

Obturator externus
Pectineus
Adductors of thigh
Gracilis
Hamstrings (not anterior)

Question 12

this is horribly incomplete

Answer 12

uhuh