Trachea synthetic windpipes; however, a successful method for this method of transplant does not currently exist and development of such a method remains theoretically daunting. The word "trachea" is used to define a very different organ in invertebrates than in vertebrates. Insects have an open respiratory system made up of spiracles, tracheae, and tracheoles to transport metabolic gases to and from tissues. An adult's trachea has an inner diameter of about and a length of about 10 to 11 centimetres (4 in.). It begins at the bottom of the larynx, and ends at the carina, the point where the trachea branches
The Body (Buffy the Vampire Slayer) to mortality and human connections, is childlike in her innocence and questions. Xander's anger and Anya's confusion allow them to be mothered somewhat by Willow, who needs to take care of someone. Dawn is deeply in denial, unable to understand that the woman she thought she had known all her life was gone. Tara, who has gone through the ordeal before, represents the acceptance phase, soothing and helping the others to work through what they are experiencing. Buffy toward the end also begins to see acceptance when she tells Dawn that the body in the morgue is not their mother;