Swelling is often most visible in the feet and ankles. Pregnancy can cause edema in the legs as the uterus puts pressure on the vena cava, a major blood vessel that returns blood to the heart from the legs. Fluid retention during pregnancy also can be caused by a more serious condition called preeclampsia. Low protein levels in the blood caused by malnutrition, kidney and liver disease can cause edema. The proteins help to hold salt and water inside the blood vessels so fluid does not leak out into the tissues.
Tinky Winky (played by Dave Thompson, Mark Heenehan, and Simon Shelton) is the first Teletubby. He is the largest of the Teletubbies, is covered in bright purple terrycloth, and has a triangular antenna on his head.
She is sunflower yellow, and has a curly antenna. She likes to sing and dance, and is often seen to look out for the other Teletubbies. Her favourite thing is a bouncy, orange ball, which is almost as big as she is. Po (played by Pui Fan Lee, Pui Fan Lee) is the fourth and last Teletubby. She is the smallest and youngest of the Teletubbies, is rosy red, and has an antenna shaped like a stick used for blowing soap bubbles. Her favourite object is her scooter, which she calls scoota (she also calls it coota, or just cooter).