Unit Four: Lower Extermity Flashcards
What are the plexuses of the lower extremity?
- Lumbar. 2. Sacral.
What two nerves branch off of the lumbar plexuses?
- Femoral. 2. Obturator.
What rami contribute to the lumbar plexuses?
L1-L4.
What rami contribute to the sacral plexuses?
L4-S5.
What three nerves branch off of the sacral plexuses?
- Superior gluteal. 2. Inferior gluteal. 3. Sciatic nerve.
What artery and nerve exits below the piriformis?
The inferior gluteal nerve and artery.
What does the obturator nerve innervate?
All of the adductors.
What two muscles are innervated by the obturator and another nerve?
- Adductor magnus. 2. Pectineus.
Where is the cutaneous innervation of the obturator nerve?
Medial thigh.
What artery supplies the artery to the femoral head?
The obturator artery.
What does the artery to the femoral head travel within?
The ligament of the femoral head.
What are the 3 boundaries of the femoral triangle?
Superior: Inguinal ligament. Laterally: Sartorius muscle. Medially: Adductor longus muscle.
What travels within the femoral sheath?
Femoral artery, vein, and nerve.
What nerve roots contribute to the femoral nerve?
L2-L4.
What innervates the anterior thigh muscles?
The femoral nerve.
What is the cutaneous innervation of the femoral nerve?
Anterior thigh and medial leg.
Where does the femoral artery become the popiteal artery?
At the popiteal artery.
What does the femoral artery divide into at the inferior popiteal fossa? (2)
Anterior and posterior tibial arteries.
What does the femoral artery branch off to in the femoral trangle?
The deep femoral artery.
What two arteries branch off of the deep femoral artery?
- Medial circumflex artery. 2. Lateral circumflex artery.
What nerve roots contribute to the sciatic nerve?
L4-S3.
What nerve branches does the sciatic nerve provide innervation for? (2)
- Tibial division. 2. Common Fibular division.
What are the superficial veins of the lower limb?
The great and small saphenous veins.
What results in one side of the hip (opposite the planted foot) dropping while walking?
The opposite gluteus medius not contracting.