[Solved] During a normal breathing cycle, pressure changes are essential to the exchange of gases with the environment. Describe what type of pressure changes must occur during ventilation. Stereomicroscope: A type of microscope designed for low magnification observation of a sample using light reflected from the surface of an object rather than transmitted through it. Dissecting Microscope: A type of light microscope designed for low magnification observation of a sample, commonly used for dissection. Compound Light Microscope: An optical instrument that uses visible light and a system of lenses to magnify small objects or details not visible to the naked eye. 3-Dimensional: Describes an object or representation that includes depth, width, and height, providing a perception of volume and space.