Because they extract oxygen thru their skin. If it does dry up they either perish or some go dormant.
Hope this helped,
-Drew
Moist skin helps in respiration. A thin film of water is formed on the surface of the frog, into which the atmospheric oxygen gets dissolved and ultimately diffuses into the blood vessels underlying the skin. This is the reason, the skin of frog is richly vascular. Some amphibian species don't even have lungs but obtain all their oxygen this way. Frogs do have lung, though, but they still need to breathe through their skin as well.
Special glands under the skin of a frog secrete mucus and toxins. The mucus helps keep the skin moist, facilitating respiration and providing a protective barrier against pathogens. The toxic secretions can deter predators and serve as a defense mechanism. These adaptations are crucial for the frog's survival in its environment.
Skin is the respiratory organ in frogs. A thin water film is formed on the skin of frog and to retain this thin film of water for long time, mucus is produced by the mucus glands present in the skin. The O2 gets dissolved into this thin film of water from where it gets diffused into the blood capillaries. And this is the reason, why the skin of frog is richly supplied with blood capillaries. If the skin of frog dries up, the frog dies. The frogs also have lungs but 80% of respiration takes place through the skin. So, frogs have two respiratory organs 1) Skin 2) Lungs.
Frogs have a unique respiratory system that involves both their lungs and skin. They breathe through their skin, which is thin and moist, allowing oxygen to pass through it. Their lungs are simple and less developed compared to mammals, serving as additional sites for gas exchange. Frogs also have a specialized vocal sac that aids in vocalization and breathing.
The skin of an amphibian is thin, moist, and permeable, allowing for the exchange of gases and liquids. It lacks scales or feathers and is covered in mucous glands that help keep the skin moist and aid in respiration. The skin also plays a role in thermoregulation and can secrete toxins for defense against predators.
Moist skin helps in respiration. A think film of water is formed on the surface of frog, into which the atmospheric O2 gets dissolved and ultimately diffuses into the blood vessels underlying the skin. This is the reason, the skin of frog is richly vascular.
A frog can breath through its skin.
The slime on the frog's skin is mucus. It is necessary for the frog's skin to be moise because the frog breathes and drinks through the skin. If it were to dry out, it would suffocate. The mucus secreted by the frog's skin helps keep it moist.
Absorb some oxygen when moist.
one word that they are covered with-mucus
The outer part of a frog is comprised of the skin, which protect the frog and helps keep it moist.
Its a cold blood animal.
toxin
Yes.
Constantly, as they need to be moist to do it and if they dry out they die.
The function is for water, oxygen, and carbon dioxide to pass through it, enabling the frog to either breathe or keep it's skin moist and keep the insides in.
glandular skin has many glands Amphibians have a smooth, glandular skin, but they have adaptations for cutaneous respiration, requiring the skin to be kept moist