Bile
Pellets - as in owl pellets
The lower part of the digestive tract called the colon.
Feces or fecal matter is the undigested residue of the digestion process. It is also called stool, excrement, body waste, etc. There are also names specific to the species such as manure, droppings, dung, etc. It also has rude names such as poop, and a number of others that don't belong on this site.
Spleen removal is called an open splenectomy or a laparoscopic splenectomy, depending upon how it is performed.
Kneecap removal, or patellectomy, is the surgical removal of the patella, commonly called the kneecap.
Plant and animal residues are reduced to simple chemicals through the process of decomposition. This is when plant and animal residues are returned to the soil.
Feaces
ummmm.....nature's little gift of love....poop.
it helps to eject out all the waste products i.e. undigested, unabsorbed substances called faeces.
Any cell-metabolism related waste product can be loosely classified as excreta. But undigested food,which is a part of faecal matter, should not be called as excreta. However, faecal matter contains a very small amount of salts of heavy metals like Mercury,Lead etc. which are produced by cell metabolism. So faecal matter can loosely be classified as excreta.
Decompostion
Defecation
Pellets - as in owl pellets
Defecation or elimination is the process of removing undigested food (feces) from the body.
tomato seeds and its thin upper layer
The Large Intestine
It is the removal of half of the stomach called a gastroectomy