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.
Usage To most of us, a fruit is a plant part that is eaten as a dessert or snack because it is sweet, but to someone who studies botany a fruit is a mature ovary of a plant, and as such it may or may not taste sweet. All species of flowering plants produce fruits that contain seeds.A peach, for example, contains a pit that can grow into a new peach tree, while the seeds known as peas can grow into another pea vine. To a botanist, apples, peaches, peppers, tomatoes, pea pods, cucumbers, and winged maple seeds are all fruits.A vegetable is simply part of a plant that is grown primarily for food. peach, for example, contains a pit that can grow into a new peach tree, while the seeds known as peas can grow into another pea vine. To a botanist, apples, peaches, peppers, tomatoes, pea pods, cucumbers, and winged maple seeds are all fruits. A vegetable is simply part of a plant that is grown primarily for food.