Tissue damage occurs via<unk>  energy (becomes thermal energy once it enters the body) and mechanical injury from trauma
Fat, bone, tendon, dry skin all have very high resistance
Muscle, nerves, vasculature have lower resistance, more often damaged
The primary determinant of injury is the amount of current flowing through the body, which depends on:
Voltage
Amperage
Resistance
Type of current (DC or AC)
Current pathway
Duration of contact
Fat, bone, tendon, dry skin all have very high resistance
Muscle, nerves, vasculature have lower resistance, more often damaged
Voltage
Amperage
Resistance
Type of current (DC or AC)
Current pathway
Duration of contact
Associated with<unk>  burns
Associated with high voltage sources
Ionized particles with temperature 3000 °C–20,000 °C
Can jump 2-3cm per 1000V
May radiate enough heat to burn persons 10ft or more away from the arc
Blast force may result in trauma
Direct current (DC) injuries typically due to lightning while alternating current (AC) are household injuries
Direct current most often demonstrates flow-over phenomenon
Lightning can reach 1-5 million volts, but current flows over the body and exits to the ground
May result in little tissue damage but cardiac dysrrhythmias are still of great concern
Current arcs onto body, envelops surface of body, then arcs to lower electromotive potential (ground)
With alternative cycle of the current there is contraction and release of muscle preventing full release from source
Current flows through body tissues
Electrical injuries
Smoke inhalation injury 
Cold injuries
Chemical injury
Trauma 
Acrolein
Lightning injuries
Hydrochloric acid