Book Lungs Breathing Animals
The book lungs located inside the arachnid are made up of several thin membranes somewhere between 10 and 80 depending the species.
Book lungs breathing animals. Spiders and some invertebrates have what are called book lungs book lungs get their name because they look like a book opened with some pages separated. These plates extend into an internal pouch formed by. The book lungs and the spiracle of the book lungs are located at the anterior end which is the front end of the spider.
During inhalation the lungs expand with air and oxygen diffuses across the lung s surface entering the bloodstream. Lung capacity has evolved to support the animal s activities. Each book lung consists of a series of thin plates that are highly vascular i e richly supplied with blood and are arranged in relation to each other like the pages of a book.
Book lung form of respiratory organ found in certain air breathing arachnid arthropods scorpions and some spiders. These are essentially like gills that get oxygen from the air. A book lung is a type of respiration organ used for atmospheric gas exchange that is present in many arachnids such as scorpions and spiders each of these organs is located inside an open ventral abdominal air filled cavity atrium and connects with the surroundings through a small opening for the purpose of respiration.
During exhalation the lungs expel air and lung volume decreases. All mammals have lungs that are the main organs for breathing. Some have a pair of book lungs others have several pairs.