CCP 1768     

Art. 1768.  Swearing of jurors; selection of foreman

When the jury has been accepted by all parties, the jurors shall be sworn to try the case in a just and impartial manner, to the best of their judgment, and to render a verdict according to the law and the evidence.  When the jury has retired, the jurors shall select a foreman to preside over them and sign the verdict which they may render.