Earthworms and frogs (under certain conditions) breathe through their skin. This process is called cutaneous respiration.
Cutaneous Respiration Explained
Cutaneous respiration is a type of respiration where gas exchange (oxygen intake and carbon dioxide release) happens across the skin of an organism.
Examples of Animals That Breathe Through Their Skin:
- Earthworms: According to the provided reference, earthworms breathe through their skin.
- Frogs: The reference mentions that frogs breathe through their moist skin when in water.
Factors That Facilitate Cutaneous Respiration:
- Moist Skin: Skin must be moist for gases to dissolve and diffuse across the membrane.
- Thin Skin: Thin skin allows for easier diffusion of gases.
- Extensive Capillary Network: A rich supply of blood vessels under the skin ensures efficient gas transport.
Table Summarizing Animals and Cutaneous Respiration:
| Animal | Method of Respiration | Conditions |
|---|---|---|
| Earthworms | Cutaneous Respiration | N/A |
| Frogs | Cutaneous Respiration | When in water, and skin remains suitably moist |
