They may appear spongy or floppy and deflated. Locate the two small dark pink lungs, which are on either side of the heart. Locate the dark red spleen, also in the tissues of the mesentery.8. It is attached to the “curve” of the stomach, usually lying underneath it, and might look like a thin thread, within the mesentery, the membranous tissue that connects the internal organs.7. It has a half moon shape and is usually found on the left side of the body cavity.5. Locate the stomach - the largest of the digestive organs. Locate the liver (the large, dark three-lobed organ) and the smaller gall bladder that lies beneath it.3. Then continue to learn about the internal organs of the frog by clicking on the organs, reading the information and remove each organ immediately to the organ tray.2. These “fingery” looking structures are usually underneath the stomach. Locate the heart, usually near the top of the liver.ġ. They may appear spongy or floppy and deflated.9. Locate the stomach -the largest of the digestive organs. Close the Instructions to begin activity.)Click on an organ to learn about it, then remove it immediately to the organ tray.ġ. Instructions: Internal anatomy(Scroll down to read all the instructions. > 0 0 TVO 11 3 1658 14.0 Normal 0 false false false EN-CA JA X-NONE These are the testes, where the sperm is produced in the male. If your frog lacks these large egg bodies, look carefully for two yellow small bean shaped organs. If your frog is a mature female, locate the ovaries which contain hundreds of darkly colored eggs. Locate the heart, usually near the top of the liver.ġ0. They may appear spongy or floppy and deflated.ĩ. Locate the dark red spleen, also in the tissues of the mesentery.Ĩ. It is attached to the “curve” of the stomach, usually lying underneath it, and might look like a thin thread, within the mesentery, the membranous tissue that connects the internal organs.ħ. It has a half moon shape and is usually found on the left side of the body cavity.ĥ. Locate the liver (the large, dark three-lobed organ) and the smaller gall bladder that lies beneath it.ģ. Then continue to learn about the internal organs of the frog by clicking on the organs, reading the information and remove each organ immediately to the organ tray.Ģ. You’ll then need to carefully cut through the muscle layer and pin that.Ĭlick on an organ to learn about it, then remove it immediately to the organ tray.ġ. At least nine other states have done the same.Instructions: Internal anatomyTo begin the dissection you’ll first need to pin and secure your frog, then choose a tool and create the skin incision. She took her case to court, which ultimately led to a state law that requires students be given an alternative to real animals. But that changed in 1987, when 15-year-old Jenifer Graham of Victorville, Calif., refused to dissect a frog in her biology class. Using dead animals to make these connections used to be the only option for students, whether they liked it or not. "What does this particular organ feel like? How stiff is it? Is it compressible?" "There's something visceral and important about the real thing," says David Evans, executive director of the National Science Teachers Association. Rats, cats, and fetal pigs all give insight into how our own bodies work. In high school the animals get even bigger. First, the class cut open an earthworm, then a chicken wing. "But are we really interested in how frogs' bodies work?" Glotfelty asks the class. In this lab, you will dissect a frog in order to observe the external and internal structures of frog anatomy. Glotfelty's goal is to get them over the squeamish hump. The smell was awful, but it was worth it. Once I opened it, this horrendous smell came out of it.
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