excretory system governs the sum of excretory processes in the human body. This
means that the human excretory system is designed to move all waste products
leftover after nutrients are extracted in digestion through the body and out.
Though exact classifications and terminology may vary with respect to the human
excretory system, some physiologists and other scientists divide it into two
distinct but interrelated pathways: the excretory system and the urinary
system. The human excretory system, an extension of the gastrointestinal
system, carries out elimination of solid waste, also known as feces, and does
so through the movements of the rectum, which is the final section of the
colon, and the anus, the external opening of the rectum which opens during
defecation. The purpose of the urinary system is to expel liquid waste in the
form of urine. The driving forces behind the urinary system are the kidneys,
the body's ultimate filters. The urinary tract terminates with the urethra,
also a part of the reproductive system along with the urinary system.