Centrioles are found in animal cells, but not plant cells. They help to organize the assembly of microtubules during cell division. Centrioles are found within cell structures known as centrosomes. During cell division, the centrosome and centrioles replicate and migrate to opposite ends of the cell.
The peroneus brevis tendon and peroneus longus tendon merge in a sheath behind the ankle. When the corresponding muscles are flexed, the tendons slide inside the sheath. Symptoms of injury to the peroneus brevis tendon include swelling as well as pain at the base of the little toe or in the outer ankle area.
The common peroneal nerve is a branch of the sciatic nerve, one of the largest nerves in the lower half of the body. It lies between the tendon of the biceps femoris muscle and the lateral head of the gastrocnemius muscle in the calf. It passes around the neck of the fibula (the smaller of the lower leg bones).