From those eggs tadpoles hatch and start swimming , eating water plants, and growing. They store fat in their tales. And breathe using gills. Tadpoles then start to sprout legs and arms, tail become shorter lungs form and gills start to disappear. They still live in the water. The next step in the last cycle is that they become forelegs. There almost mature frogs with lungs, it can hop on land and still has some of it tails. The last step of the cycle is then to turn into an adult. The adult frog lives on land and eat insects . It breathes with lungs and have no tail. H. Frog eats many kinds of food. Hitting that could fit in their mouth. They also eat their skin. L. A frogs heart has three chambers (two atria, and a single ventricle), whereas a humans has four (two atria, and two ventricles). The atrium of a frog receives degenerated blood from the blood vessels that drain the various organs of the body. The left atrium receives oxygenated blood from the lungs and skin. Both atria empty into the single ventricle, which is divided into narrow chambers that reduce the mixing of the two bloods. The ventricle contracts, oxygenated blood from the left atrium is sent into the carotid arteries, hush taking blood to the head (and brain).
Then, the degenerated blood from the right atrium is sent to the plenteousness arteries, therefore taking blood to the skin and lungs where fresh oxygen can be picked up. J. They have colors that help protect them so they could hide. They also use their tongue as a weapon, they use sounds to tell others he’s in danger. Some have poison. K. From the esophagi, swallowed food moves into the stomach and then into the small intestine. Bile is a digestive juice made by the liver and stored in the gallbladder. Bile flows into a tube called the common bile duct, into which pancreatic juice, a digestive juice from the pancreas, also flows.
The contents of the common bile duct flow into the small intestine, where most of the digestion and absorption of food into the bloodstream takes place-it then go to the large intestine. L. They drink and breathe through it. Instead they absorb most of the moisture they need might suffocate. Sometimes you’ll find frogs that are slimy. This is because the frog skin secretes a mucus that helps keep it moist. They still need to stay near water. Frogs shed their skin regularly to keep it healthy. Some frogs shed their skin weekly, others as often as every day. He frog pulls the skin off over it’s head, and then eats it. Materials 1 tray, 1 frog, 1 scissor, 1 prop, 1 tweezers, 1 glove procedure: 1. Place on non-writing hand 2. Observe and take notes on skin 3. Use scissors to open skin layer observe and take notes on skin muscles.