Chitin is a primary component in the exoskeletons of arthropods and crustaceans and is also found in the cell walls of fungi. It's a polysaccharide, and it's excreted by the epidermal cells in arthropods.
Definition & Facts. Hemorrhoids, also called piles, are swollen and inflamed veins around your anus or in your lower rectum. External hemorrhoids form under the skin around the anus. Internal hemorrhoids form in the lining of the anus and lower rectum.
Hemorrhoids (US English) or haemorrhoids UK /ËhÉmÉrÉÉªdz/ are vascular structures in the anal canal. In their normal state, they are cushions that help with stool control.They become pathological or piles when swollen or inflamed. At this point the condition is technically known as hemorrhoidal disease.The signs and symptoms of hemorrhoids depend on the type present.Internal hemorrhoids usually present with painless rectal bleeding, while external hemorrhoids may produce few symptoms or if thrombosed significant pain and swelling in the area of the anus.emorrhoids (US English) or haemorrhoids UK /ËhÉmÉrÉÉªdz/ are vascular structures in the anal canal. In their normal state, they are cushions that help with stool control.