Tracing the pathway of ingested food, where would it enter next after leaving the ileum

After leaving the ileum (which is the last part of small intestine), the chyme, partly digested food goes to the cecum. The cecum is the part between the small intestine and  the ascending colon of the large intestine. The cecum the site of the appendix attachment. The large intestine is the last part of the digestive tract where water and some minerals are reabsorbed back into the blood. The waste products of digestion (feces) are defecated from the anus via the rectum.

the nitrogen cycle provides nitrogen to the ecosystem from the atmosphere, ground and oceans. nitrogen is an important component of complex molecules such as amino acids and nucleotides, which lead to the creation of proteins and dna, the building blocks of all life. plants absorb nitrogen in the form of ammonium, nitrate ion and, on rare occasions, as amino acids. animals receive nitrogen necessary for biological processes from feeding on living or dead organic matter.