Reaction at CATHODE: 1  H+H+ and Cu2+Cu2+ ions are attracted to the cathode. 2  Cu2+Cu2+ ions are preferentially discharged as Cu2+Cu2+ is lower in the electrochemical series than H+H+. 3  Each Cu2+Cu2+ ion gains two electrons from the cathode to form one copper atom.
One of the most well known spine cranks is the boston crab, which is usually depicted in pro-wrestling context. Similarly to neck cranks, spine cranks are illegal techniques in most combat sports, excluding some submission wrestling and mixed martial arts competitions, where they are used as submission holds.
Causes and Risk Factors for Crabs. Crab lice are transmitted commonly during sexual intercourse, when the louse moves from the pubic hair of its host to the pubic hair of the partner. Oral sex can lead to infestation of the eyelashes, eyebrows, face, chest hair, or scalp.