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).
Your gut synthesizes a host of small molecules which can directly signal the brain. One of these, called ghrelin, is synthesized primarily in the stomach, and is produced when the stomach is empty. Ghrelin released into the blood ultimately finds its way into the brain, and crosses the blood-brain barrier to reach a part of the brain called the hypothalamus. Now, the hypothalamus has two interesting types of cells.