Amphibians, such as frogs and salamanders, are able to exchange oxygen and carbon dioxide through their skin. Their skin is thin, moist, and highly vascularized, allowing for this gas exchange to occur.
Manometers are typically used to measure pressure, so they are not commonly used to directly measure metabolic gas exchange. For recording metabolic gas exchange, methods such as gas analyzers or respiratory gas exchange systems are more commonly used because they can measure specific gas concentrations in exhaled breath.
A lancelet is a living organism. It is a type of marine invertebrate with a simple body structure, similar to that of a fish. Lancelets are considered living organisms because they exhibit characteristics of life such as growth, reproduction, and response to stimuli.
Water is lost from gas exchange surfaces due to evaporation. As gases diffuse in and out of the surface, water molecules also escape in the process, leading to its loss. This water loss helps maintain the concentration gradient necessary for efficient gas exchange.
An animal's type of gas exchange system is influenced by its environment. Animals in aquatic environments may have gills for efficient gas exchange with water, while terrestrial animals often have lungs to extract oxygen from air. Some animals like insects have a tracheal system for gas exchange that connects to almost every cell in their body. The type of gas exchange system an animal has is adapted to meet the specific oxygen requirements and environmental conditions of its habitat.
The gas occurs by simple diffusion through the cells.
gills
the alveolus
in the leave
gas exchange occurs between the thin walls of the alveoli and the thin walls of the capillaries
in their gills.
In the alveoli
lungs
Gas exchange does not occur in the pleura. The pleura is a membrane that lines the outside of the lungs and inside of the chest cavity. Gas exchange, where oxygen is taken in and carbon dioxide is removed, happens in the alveoli of the lungs.
Capillaries
Between the avioli and the lungs.
Gaseous exchange takes place when the volume of the chest cavity is increased or decreased.