Back to Top. Empiricism is the theory that the origin of all knowledge is sense experience. It emphasizes the role of experience and evidence, especially sensory perception, in the formation of ideas, and argues that the only knowledge humans can have is a posteriori (i.e. based on experience).
Answer: The sciatic nerve divides into the tibial and common peroneal nerves at the lower third of the thigh. When an injection is done in the popliteal fossa space, the provider should indicate what structure he or she is trying to block.
1 Femoral pulse: located in the inner thigh, at the mid-inguinal point, halfway between the pubic symphysis and anterior superior iliac spine (femoral artery). 2  Popliteal pulse: Above the knee in the popliteal fossa, found by holding the bent knee.