Sciatic nerve Flashcards
What are the nerve roots of the sciatic nerve?
L4 - S3
How does the sciatic nerve leave the pelvis?
Through greater sciatic foramen
What does the sciatic nerve enter as it passes through the greater sciatic foramen?
Gluteal region
Where does the sciatic nerve emerge in the gluteal region?
Inferior to piriformis
Which muscles does the sciatic nerve pass over?
Superior gemellus
Obturator internus
Inferior gemellus
Quadratus femoris
What does the sciatic nerve enter after the gluteal region?
The posterior thigh
How does the sciatic nerve pass down the posterior thigh?
Between biceps femoris and adductor magnus
What does the sciatic nerve do in the popliteal fossa?
Divides into tibial nerve and common fibular nerve
What are the motor functions of the sciatic nerve?
Tibial part - long heads of biceps femoris, semitendinosus, semimembranosus
Common fibular part - short head of biceps femoris
