I did my project on the a condition within the circulatory system in the lower limb called compartment syndrome. This is a very rare condition that is caused by pressure build up in the muscles, the most common place for this to happen is in the calf. When this does happen it cuts off blood circulation as the swelling of the muscles pushes into the arteries and veins. The muscles within our calfs our divided into multiple compartments with the help of fascias, however the fascia is not flexible and is the root cause of compartment syndrome. In the attached drawing you can see what muscles are in what compartments, where the veins and arteries are within the calf as well as the effects of compartment syndrome which includes swelling and color discoloration in the calf, foot and toes.