restriction. n. 1. something that restricts; a restrictive measure, law, etc. 2. the act of restricting or the state of being restricted. 3. (Logic) logic maths a condition that imposes a constraint on the possible values of a variable or on the domain of arguments of a function.
The primitive gut that forms during gastrulation in the developing embryo is known as the archenteron or the digestive tube.It develops into the digestive tract of an animal.ach is controlled by the dorsal blastopore, and primitive node (also known as Hensen's node), respectively. During Gastrulation, the Archenteron develops into the digestive tube, with the blastopore developing into either the mouth (Protostome) or the anus (Deuterostome).
Gastrointestinal Tract. The gastrointestinal (GI) tract (also digestive tract, or alimentary canal) is the system of organs in the body that takes in food, digests it for the absorption of nutrients and energy, and expels waste material. The major functions of the GI tract are categorized as four distinct processes: Ingestion is the consumption of food and other substances through the mouth, as they pass by chewing and swallowing into the GI tract. Digestion is the