LE: Cutaneous nerves, Superficial veins, Lymphatics Flashcards
- 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.
Deep Inguinal Group of Lymph Nodes
- 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.
Superficial Inguinal Group of Lymph Nodes
Where does the inguinal nodes enter then ultimately drain into?
external iliac nodes
lumbar (aortic) nodes and vessels
What consists the Deep Lymph Vessels which follow the course of the corresponding blood vessels and enter the popliteal lymph nodes?
anterior tibial
posterior tibial,
peroneal vessels
- 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.
Superficial Lymph Vessels
Where does Small (Short) Saphenous Vein drain?
popliteal vein
- 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
Small (Short) Saphenous Vein
Where does great saphenous vein drain?
Femoral vein
Is a suitable vessel for use in coronary artery bypass surgery and for venipuncture
Great Saphenous Vein
What does great saphenous vein receive?
external pudendal, superficial epigastric, superficial circumflex iliac, lateral femoral cutaneous, accessory saphenous veins
Passes through the saphenous opening (fossa ovalis) in the fascia lata and pierces the femoral sheath to join the femoral vein.
Great Saphenous Vein
- 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.
Great Saphenous Vein
Supplies anterior muscles of the leg and foot and the skin of the contiguous sides of the first and second toes
Deep Peroneal (fibular) Nerve
Superficial Peroneal (fibular) Nerve divides into?
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
What does Superficial Peroneal (fibular) Nerve innervate?
skin on the lateral side of the lower leg and the dorsum of the foot
Passes distally between the peroneus muscles and the extensor digitorum longus and pierces the deep fascia in the lower third of the leg
Superficial Peroneal (fibular) Nerve
What does Sural Nerve innervate?
skin on the back of the leg and the lateral side of the ankle, heel, and foot
Is formed by the union of the medial sural and lateral sural nerves (or the communicating branch of the lateral sural nerve).
Sural Nerve
What does Medial Sural Cutaneous Nerve innervate?
skin on the back of the leg and the lateral side of the ankle, heel, and foot
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.
Medial Sural Cutaneous Nerve
What does Lateral Sural Cutaneous Nerve innervate?
skin on the posterolateral side of the leg
Arises from the common peroneal nerve in the popliteal fossa and may have a communicating branch that joins the medial sural cutaneous nerve
Lateral Sural Cutaneous Nerve
Is vulnerable to injury (proximal portion) during surgery to repair varicose veins.
Saphenous Nerve
What does the saphenous nerve innervate?
skin on the medial side of the leg and foot
- 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
Saphenous Nerve
What does Posterior Femoral Cutaneous Nerve innervate?
skin of the buttock, thigh, and calf
- 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.
Posterior Femoral Cutaneous Nerve
What does Cluneal (Buttock) Nerves innervate?
skin of the gluteal region
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
Cluneal (Buttock) Nerves
What does Lateral Femoral Cutaneous Nerve innervate?
skin on the anterior and lateral aspects of the thigh as far as the knee
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.
Lateral Femoral Cutaneous Nerve
