Flatworms, such as planarians, lack specialized respiratory organs and instead rely on their body surface for gas exchange. Their flat, thin bodies provide a large surface area relative to volume, allowing oxygen to diffuse directly into their cells and carbon dioxide to diffuse out. This process is effective due to the flatworms' moist environment, which facilitates the diffusion of gases. Overall, their entire body surface functions as the respiratory surface.
Respiratory surface is the surface where respiratory gas exchange in an animal. Ex-lungs
the respiratory surface for protists is the alveolis and capillaries
A respiratory surface is located anywhere in an animal or human being where gas exchange occurs. A respiratory surface is located anywhere in an animal or human being where gas exchange occurs.
Respiratory surface is the region where gaseous exchange occur. It includes respiratory bronchiole, alveolar duct and alveolus. Large surface surface is needed the increase the diffusion rate of gaseous. Respiratory surface also exhibit other properties such as moist and only one-cell thick. Nika G.
flatworm
where are the reproductive organs located in a flatworm
large area
alevoli
Gills
A decrease in the surface area of the respiratory membrane will result in a decrease in gas exchange.
The respiratory surface in humans is called the alveoli. These tiny air sacs in the lungs are where gas exchange occurs, with oxygen from the air we breathe passing into the bloodstream and carbon dioxide moving out.
The three characteristics of a respiratory rate are rate, depth, and rhythm.