Osmoregulation, the control of
water balance in animals, and excretion, the bodys waste disposal
system, are closely related processes. In this Lesson, well look
at how animals regulate the concentration of their body fluids, and
how waste materials are excreted by mechanisms of active transport.
Well go on to examine
different kinds of excretory systems: flame cells, Malpighian
tubules, nephridia, and vertebrate kidneys. The most complex and
compact excretory systems are those in the vertebrate kidney. Well
look in depth at the human kidney and its filtration system. Well
also study how hormones regulate kidney function and water balance
in the body.
Well finish by looking at
some of the causes of kidney failure, along with their treatments.