Dialysis blocks the passage of larger substances (for example, red blood cells, large proteins). This replicates the filtering process that takes place in the kidneys when the blood enters the kidneys and the larger substances are separated from the smaller ones in the glomerulus. The two main types of dialysis, hemodialysis and peritoneal dialysis, remove wastes and excess water from the blood in different ways. Hemodialysis removes wastes and water by circulating blood outside the body through an external filter, called a dialyzer, that contains a semipermeable membrane. The blood flows in one direction and the dialysate flows in the opposite.
Survivor: Blood vs. Water Survivor: Blood vs. Water Survivor: Blood vs. Water is the 27th season of the American CBS competitive reality television series "Survivor". The season filmed in May–June 2013 and premiered on Wednesday, September 18, 2013, featuring returning castaways and their loved ones competing against each other. It was the third consecutive season, and the ninth season overall, to feature returning contestants. As with the previous two seasons, the season was filmed in the Philippines, but this time at Palaui Island, Cagayan. The tribe names were Galang and Tadhana, which means "respect" and "destiny", respectively, in Tagalog. Tyson Apostol was named the