The air sacs of birds extend into the humerus (the bone between the shoulder and elbow), the femur (the thigh bone), the vertebrae and even the skull. Birds do not have a diaphragm; instead, air is moved in and out of the respiratory system through pressure changes in the air sacs.Muscles in the chest cause the sternum to be pushed outward. This creates a negative pressure in the air sacs, causing air to enter the respiratory system.n mammals, only one respiratory cycle is necessary. Respiratory cycle of a bird. 1  During the first inspiration, the air travels through the nostrils, also called nares, of a bird, which are located at the junction between the top of the upper beak and the head.
Midnight (Koontz novel) Midnight is a novel by the best-selling author Dean Koontz. It was published in 1989. The book is a cross-genre novel. It includes aspects of suspense, science fiction, love story, and horror.
There's A Ghost In My House by R. Dean Taylor. In spite of its title, there is nothing supernatural about this song. Co-written with Brian Holland, Eddie Holland and Lamont Dozier, this uptempo track about a love that is no more flopped in the US but was a big hit in the UK.