Innervation Flashcards
What vertebral levels do the nerves of the lumbar plexus arise from?
L1 to L4
What vertebral levels do the nerves of the sacral plexus arise from?
L4 to S3
The lumbosacral trunk originates from which nerves?
L4 and L5
The femoral nerve innervates which parts of the lower limb?
The anterior compartment of the thigh and the hip flexor muscles
From which vertebral levels do the tributaries to the femoral nerve arise from?
L2, L3, L4
From which levels does the obturator nerve arise from?
L2, L3, L4
Which nerve passes through the obturator canal (a small opening within the obturator foramen)?
The obturator nerve
Which nerve passes inferior to the inguinal ligament?
The femoral nerve
From which levels does the sciatic nerve arise from?
L4, L5, S1, S2, S3
Where does the sciatic nerve exit the pelvis?
Through the greater sciatic foramen
Which compartment of the thigh does the obturator nerve innervate?
The medial compartment
Which compartment of the thigh is innervated by the sciatic nerve?
The posterior compartment
The posterior compartment of the thigh is innervated by which nerve?
The sciatic nerve (L4-S3)
Which nerve innervates the medial compartment of the thigh?
The obturator nerve (L2-L4)
Which nerve innervates the anterior compartment of the thigh?
The femoral nerve (L4-L4)
At what anatomical landmark does the sciatic nerve split into the common fibulae nerve and the tibial nerve?
The popliteal fossa
What two nerves does the sciatic nerve split into?
Tibial division and the common fibular division
Which of the tibial nerve and the common fibular nerve are located more laterally?
The common fibular nerve
Which compartment of the leg is innervated by the deep fibular nerve?
The anterior compartment
The deep fibular nerve is a branch of which nerve?
The common fibular nerve
What does the common fibular nerve branch into?
The deep fibular nerve and the superficial fibular nerve
Which compartment of the leg is innervated by the superficial fibular nerve?
The lateral compartment of the leg
The posterior compartment of the leg is inner by which nerve?
The tibial nerve
The tibial nerve is a branch of which nerve?
The sciatic nerve
