What is the difference between excretion from defecation?

Excretion and defecation are two related processes that involve the elimination of waste products from the body. However, there are some key differences between the two.

Excretion is the process of removing metabolic waste products from the body. These waste products include carbon dioxide, urea, and other nitrogenous compounds. Excretion occurs through various organs and systems, including the lungs, kidneys, skin, and liver. The lungs excrete carbon dioxide, while the kidneys excrete urea and other nitrogenous compounds. The skin excretes sweat, which contains various waste products. The liver filters and detoxifies waste products, which are then excreted by the kidneys.

Defecation is the process of eliminating solid waste from the gastrointestinal tract. This waste consists primarily of undigested food, as well as bacteria, mucus, and other materials. Defecation occurs through the rectum and anus. The stool is formed in the colon and rectum and is expelled from the body through the anal sphincter.

In summary, excretion is the process of removing metabolic waste products from the body, while defecation is the process of eliminating solid waste from the gastrointestinal tract.