Chitin is obtained from the primary component of polysaccharide which is found in the cell walls of fungi, it is a derivative of glucose with N-polymer acetylglucosamine
In Velella the pneumatophore becomes of complex structure and sends air-tubes, lined by a chitin and resembling tracheae, down into the compact coenosarc, thus evidently serving a respiratory as well as a hydrostatic function.
Further, there is general agreement that the chitin-lined fore-gut and hind-gut, which form the greater part of the digestive tract, arise from ectodermal invaginaof the germ band a double fold in the undifferentiated blastoderm, tions (stomodaeum and proctodaeum respectively) at the positions which
Chitin הגייה עם משמעויות, מילים נרדפות, הפכים, תרגומים, משפטים ועוד