1 Increasing thoracic volume results in decreased pleural pressure, increased alveolar volume, decreased alveolar pressure, and air movement into the lungs.  Decreasing thoracic volume results in increased pleural pressure, decreased alveolar volume, increased alveolar pressure, and air movement out of the lungs.
Freebase(5.00 / 1 vote)Rate this definition: Orchard. An orchard is an intentional planting of trees or shrubs that is maintained for food production. Orchards comprise fruit or nut-producing trees which are grown for commercial production. Orchards are also sometimes a feature of large gardens, where they serve an aesthetic as well as a productive purpose.
A plum tree. A flowering almond tree. A fruit tree is a tree which bears fruit that is consumed or used by humans and some animals â all trees that are flowering plants produce fruit, which are the ripened ovaries of flowers containing one or more seeds.ypes of fruits are described and defined elsewhere (see Fruit), but would include fruit in a culinary sense, as well as some nut-bearing trees, such as walnuts.