In nasogastric (NG) intubation, a tube is placed through your nose into your stomach. Your healthcare provider can use an NG tube to feed you and give you medicine. They can also apply suction to an NG tube to remove stomach contents.
Crayfish, also called crawfish or crawdad, any of numerous crustaceans (order Decapoda, phylum Arthropoda) constituting the families Astacidae (Northern Hemisphere), Parastacidae, and Austroastracidae (Southern Hemisphere). They are closely related to the lobster.
They are colloquially called crawfish or crawdads. Most species of crayfish live in freshwater. All of them play a significant role in the environment, keeping it clean and serving as a food source for birds and other aquatic animals.rayfish are small aquatic creatures, approximately one to six inches in length. They take on a muddy green, yellow or red colorâsometimes even black. There are 540 species of crayfish worldwideâabout 400 of these are found in North America.