The right lobe, the leftĪnterior lobe, and the left posterior lobe. This brown colored organ isĬomposed of three lobes. Largest structure of the the body cavity.
Label each of the structures underlined above. On the roof of the mouth, you will find the two tiny openings of the nostrils, if you put your probe into those openings, you will find they exit on the outside of the frog.ħ. Run you finger over both sets of teeth and note the differences between them.Ħ. Both are used for holding prey, frogs swallow their meals whole and do NOT chew. The maxillary teeth are found around the edge of the mouth. The vomerine teeth are found on the roof of the mouth. Use your probe to open the glottis and compare that opening to the esophagus.ĥ. This slit is the glottis, and it is the opening to the lungs. (You may need to use your probe to get it to open up). Just behind the tongue, and before you reach the esophagus is a slit like opening. To what structure does the Eustachian tube attach? _Ĥ. They are used to equalize pressure in the inner ear while the frog is swimming. Close to the angles of the jaw are two openings, one on each side. Use a probe to poke into the esophagus.ģ. In the center of the mouth, toward the back is a single round opening, the esophagus. Draw a sketch of the tongue, paying attention to its shape.Ģ. Does it attach to the front or the back of the mouth? _ (You may remove the tongue). Cut deeply so that the frog's mouth opens wide enough to view the structures inside.ġ. Procedure: Pry the frog's mouth open and use scissors to cut the angles of the frog's jaws open. Is it scaley or is it slimy? _ Anatomy of the Frog's Mouth Measure the diameter (distance across the circle) of the tympanic membrane. The tympanic membrane is used for hearing. Just behind the eyes on the frog's head is a circular structure called the tympanic membrane. What color is the nictitating membrane? _ What color is the eyeball? _Ħ. Use tweezers to carefully remove the nictitating membrane. Locate the frog's eyes, the nictitating membrane is a clear membrane that attached