LE: Cutaneous nerves, Superficial veins, Lymphatics

Question 1

• Lies deep to the fascia lata on the medial side of the femoral vein.
  
  • Receives lymph from deep lymph vessels (i.e., efferents of the popliteal nodes) that accompany the femoral vessels and from the glans penis or glans clitoris, and drains into the external iliac nodes through the femoral canal.

Answer 1

Deep Inguinal Group of Lymph Nodes

Question 2

• Is located subcutaneously near the saphenofemoral junction and drains the superficial thigh region.
  
  • Receives lymph from the anterolateral abdominal wall below the umbilicus, gluteal region, lower parts of the vagina and anus, and external genitalia except the glans, and drains into the external iliac nodes.

Answer 2

Superficial Inguinal Group of Lymph Nodes

Question 3

Where does the inguinal nodes enter then ultimately drain into?

Answer 3

external iliac nodes

lumbar (aortic) nodes and vessels

Question 4

What consists the Deep Lymph Vessels which follow the course of the corresponding blood vessels and enter the popliteal lymph nodes?

Answer 4

anterior tibial
posterior tibial,
peroneal vessels

Question 5

• Are formed by vessels from the gluteal region, the abdominal wall, and the external genitalia.
• Are divided into a medial group, which follows the great saphenous vein to end in the inguinal nodes, and a lateral group, which follows the small saphenous vein to end in the popliteal nodes, and their efferents accompany the femoral vessels end in the inguinal nodes.

Answer 5

Superficial Lymph Vessels

Question 6

Where does Small (Short) Saphenous Vein drain?

Answer 6

popliteal vein

Question 7

• Begins at the lateral end of the dorsal venous arch and passes upward along the lateral side of the foot with the sural nerve, behind the lateral malleolus,
• Ascends in company with the sural nerve and passes to the popliteal fossa, where it perforates the deep fascia

Answer 7

Small (Short) Saphenous Vein

Question 8

Where does great saphenous vein drain?

Answer 8

Femoral vein

Question 9

Is a suitable vessel for use in coronary artery bypass surgery and for venipuncture

Answer 9

Great Saphenous Vein

Question 10

What does great saphenous vein receive?

Answer 10

external pudendal, 
superficial epigastric, 
superficial circumflex iliac, 
lateral femoral cutaneous, 
accessory saphenous veins

Question 11

Passes through the saphenous opening (fossa ovalis) in the fascia lata and pierces the femoral sheath to join the femoral vein.

Answer 11

Great Saphenous Vein

Question 12

• Begins at the medial end of the dorsal venous arch of the foot.
• Ascends in front of the medial malleolus and along the medial aspect of the tibia along with the saphenous nerve, passes behind the medial condyles of the tibia and femur, and then ascends along the medial side of the femur.

Answer 12

Great Saphenous Vein

Question 13

Supplies anterior muscles of the leg and foot and the skin of the contiguous sides of the first and second toes

Answer 13

Deep Peroneal (fibular) Nerve

Question 14

Superficial Peroneal (fibular) Nerve divides into?

Answer 14

medial dorsal cutaneous nerve - supplies the medial sides of the foot and ankle, the medial side of the great toe, and the adjacent sides of the second and third toes
intermediate dorsal cutaneous nerve - supplies the skin of the lateral sides of the foot and ankle and the adjacent sides of the third, fourth, and little toes

Question 15

What does Superficial Peroneal (fibular) Nerve innervate?

Answer 15

skin on the lateral side of the lower leg and the dorsum of the foot

Question 16

Passes distally between the peroneus muscles and the extensor digitorum longus and pierces the deep fascia in the lower third of the leg

Answer 16

Superficial Peroneal (fibular) Nerve

Question 17

What does Sural Nerve innervate?

Answer 17

skin on the back of the leg and the lateral side of the ankle, heel, and foot

Question 18

Is formed by the union of the medial sural and lateral sural nerves (or the communicating branch of the lateral sural nerve).

Answer 18

Sural Nerve

Question 19

What does Medial Sural Cutaneous Nerve innervate?

Answer 19

skin on the back of the leg and the lateral side of the ankle, heel, and foot

Question 20

Arises from the tibial nerve in the popliteal fossa and may join the lateral sural nerve or its communicating branch to form the sural nerve.

Answer 20

Medial Sural Cutaneous Nerve

Question 21

What does Lateral Sural Cutaneous Nerve innervate?

Answer 21

skin on the posterolateral side of the leg

Question 22

Arises from the common peroneal nerve in the popliteal fossa and may have a communicating branch that joins the medial sural cutaneous nerve

Answer 22

Lateral Sural Cutaneous Nerve

Question 23

Is vulnerable to injury (proximal portion) during surgery to repair varicose veins.

Answer 23

Saphenous Nerve

Question 24

What does the saphenous nerve innervate?

Answer 24

skin on the medial side of the leg and foot

Question 25

* Arises from the femoral nerve in the femoral triangle and descends with the femoral vessels through the femoral triangle and the adductor canal. * Pierces the fascial covering of the adductor canal at its distal end in company with the saphenous branch of the descending genicular artery. * Becomes cutaneous between the sartorius and the gracilis and descends behind the condyles of the femur and tibia and medial aspect of the leg in company with the great saphenous vein

Answer 25

Saphenous Nerve

Question 26

What does Posterior Femoral Cutaneous Nerve innervate?

Answer 26

skin of the buttock, thigh, and calf

Question 27

* Arises from the sacral plexus (S1-S3), passes through the greater sciatic foramen below the piriformis muscle, runs deep to the gluteus maximus muscle, and emerges from the inferior border of this muscle. * Descends in the posterior midline of the thigh deep to the fascia lata and pierces the fascia lata near the popliteal fossa.

Answer 27

Posterior Femoral Cutaneous Nerve

Question 28

What does Cluneal (Buttock) Nerves innervate?

Answer 28

skin of the gluteal region

Question 29

Consist of superior (lateral branches of the dorsal rami of the upper three lumbar nerves), middle (lateral branches of the dorsal rami of the upper three sacral nerves), and inferior (gluteal branches of the posterior femoral cutaneous nerve) nerves

Answer 29

Cluneal (Buttock) Nerves

Question 30

What does Lateral Femoral Cutaneous Nerve innervate?

Answer 30

skin on the anterior and lateral aspects of the thigh as far as the knee

Question 31

Arises from the lumbar plexus (L2-L3), emerges from the lateral border of the psoas major, crosses the iliacus, and passes under the inguinal ligament near the anterior-superior iliac spine.

Answer 31

Lateral Femoral Cutaneous Nerve