The skin of a frog has two primary functions: helping the frog to drink and helping the frog to breathe. Toads also use their skin in these two ways, though they are able to retain moisture better than frogs and do not need to be as close to a water source.Know More
It is important that each frog maintain a proper level of moisture in their skin in order to breathe. Without this level of moisture, the frog can suffocate and perish. The frog uses its skin as well as its lungs and mouth lining in order to breathe. When the frog is underwater, it uses its skin only to breathe by allowing gasses to permeate the body as well as leave it. When out of the water, the frog uses mucus glands to dissolve oxygen that is already present in the air and then to absorb it. Frogs also need to be able to breathe whenever they are hibernating and breathing through their skin is the only option when they are buried in mud for hibernation.
The frog also uses its skin to drink because frogs do not drink water or other liquids through their mouths. The frog has a patch on its stomach and part of its thighs where it can absorb water. These areas are commonly referred to as the "drinking patch areas."Learn more about Frogs
The function of the urinary bladder in a frog is to store and excrete urine, collect excess fluid and reabsorb glucose that is destined for excretion. A frogâ€™s skin must remain moist, which is why they store fluids in the bladder for later use during droughts and times of water stress.Full Answer >
A frog's gallbladder stores bile. The frog's gallbladder is a small green sac located under the liver and can be hard to find during dissection.Full Answer >
Even when they sleep, frogs do not close their eyes. Frogs do, however, have eyelids that blink to protect their eyes from dirty residue and preserve moisture. Frogs also have a third eyelid, called the nictitating eyelid, that facilitates a clear view when swimming underwater or on land.Full Answer >
A frog's gullet is its throat or esophagus; this is the passage from the mouth to the digestive system. If a frog's digestive process is seen as a series of steps, passage of food from the mouth to the gullet can be seen as the second step in digestion.Full Answer >