During this hands-on lab, participants will perform simulations of all the regional anesthesia blocks described in the lecture: distal forearm, brachial plexus, femoral, cluneal, paraspinal, popliteal, and others. Attendees will use phantoms, patient models, and fellow participants as anatomical fodders. A representative sample of currently available ultrasound machines will be used. (This lab is limited to 30 participants.)