A brachial plexus simulator is disclosed. The brachial plexus simulator
comprises a head, a spinal assembly, and a simulated brachial plexus. The
head may be weighted to a biofidelic weight and may include a tilt
sensor. The spinal assembly comprises a simulated spine mounted for
extension. The simulated brachial plexus comprises a network of nerve
tubing that is attached relative to the simulated spine at appropriate
points so as to mimic the connectivity, shape, and compliance of the
brachial plexus. The nerve tubing may be filled with a fluid material
whose resistance or other electrical properties change with its length,
such as mercury. Maternal and fetal birthing simulators are also
disclosed.