How is the location of the external nares an adaptation to living in water?
Just behind the eyes are the eardrums, which are round, flattened areas in the skin. To examine the interior of the mouth, use scissors to cut he edges of the mouth at each hinge joint. In other words, where the maxilla (upper jaw) and the mandible (lower jaw) join together. Open the mouth wide. Rub your finger along the roof of the mouth. You will feel a row of small teeth called maxillary teeth. Below these are two sharp mounds called vomerine teeth. Close to the teeth are two openings, the internal nares. 2. Where do you think these openings lead? The wide opening in the center of the mouth is the top of the esophagus, the tube that leads to the stomach. Below the esophagus is the vertical slit called the glottis, which leads to the lungs. The frog’s tongue fills most of the lower jaw. In the living frog, the tongue is sticky. 3. What is unusual about where the frog’s tongue is attached compared to where your tongue is attached? 4. How would this place of attachment and the tongue’s
