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frog anatomy template
on the outside of the frog’s head are two external nares, or nostrils; two tympani, or eardrums; and two eyes, each of which has three lids. the digestive system consists of the organs of the digestive tract, or food tube, and the digestive glands. bile is a digestive juice made by the liver and stored in the gallbladder. the circulatory system consists of the heart, blood vessels, and blood.
veins from different parts of the body enter the right and left atria. the organs of the male reproductive system are the testes, sperm ducts, and cloaca. those of the female system are the ovaries, oviducts, uteri, and cloaca. voluntary muscles, which are those over which the frog has control, occur in pairs of flexors and extensors. when the extensor of that body part contracts, the part straightens.
background: as members of the class amphibia, frogs may live some of their adult lives on land, but they must return to water to reproduce. eggs are laid and preserved frog, dissecting tray, dissecting microscope, pins, blunt and sharp when finished with your dissection, dispose of your frog in the special biobags hst’s high school science lesson on frog dissection includes external and special pigment cells in their skin control the camouflage pattern and colors. also , frog dissection anatomy, frog dissection anatomy, frog dissection lab worksheet, frog dissection worksheet answers, frog dissection lab report
frog anatomy template format
some frogs are aquatic, spending most of their time in the water. the female frog usually lays eggs in water in a string or mass that sticks to vegetation. its tail grows longer and a fin forms, which allows the tadpole to swim effectively. their front legs are short and specially designed to absorb the impact of landing. tree frogs have suction cups on their toes that allow them to cling to the bark of trees. also, some frogs have serous glands in their skin, which secrete poison that will irritate the mouth of their predators. to find out more about frogs, do research on one of these topics: what kinds of frogs live in your area?
one of the best ways to learn about adult amphibian anatomy is to dissect a preserved frog and see how all the organs fit together inside its body. observe that the frog’s skin is colored and spotted to help camouflage it. male frogs have openings to the vocal sacs near the hinges of the lower jaw. notice the arteries connected to the top of the heart, giving it a ‘y’ shape. again, lift the lobes of the liver to locate the lungs on either side of the heart. the stomach connects to the small intestine. female frogs have ovaries full of dark-colored eggs; if the eggs are well-developed, the ovaries will be very large and visible. move the ovaries to one side to see the coiled tubes of the oviducts.
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