In certain organisms, these smaller substances are absorbed through the small intestine into the blood stream. Digestion is a form of catabolism that is often divided into two processes based on how food is broken down: mechanical and chemical digestion. The term mechanical digestion refers to the physical breakdown of large pieces of food into smaller pieces which can subsequently be accessed by digestive enzymes.
shibboleth (plural shibboleths) 1  A word, especially seen as a test, to distinguish someone as belonging to a particular nation, class, profession etc. 2  A common or longstanding belief, custom, or catchphrase associated with a particular group, especially one with little current meaning or truth. It's about time we abandoned the bourgeois shibboleth that earning money makes you a better person.
When he (the Highest Self) is in union with the body, the senses, and the mind, then wise people call him the Enjoyer. The Upanishads are a collection of religious texts, written in Sanskrit and forming part of the Hindu scriptures. They were written between the 8th and 6th centuries BC, though the name Upanishad is sometimes also extended to cover many later writings on the Vedanta philosophy.