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 peroneal tendons are two strong tendons that connect the muscles on the outside of the leg to the bones in the foot. They run behind the bone in the ankle called the fibula. When they contract they move the foot down and out. They play an important role in stabilizing the foot on uneven surfaces.