HELP 90 PTS GRADES DUE 20 ILLBMARRY YOU Why do the scientists say frogs are used as an example of the vertebrate body plan?

Why do frogs have moist skin? What do they use their skin for that most another tetrapod (four-limbed creatures) do not?

What makes frogs atypical (not normal) amphibians? How is the name “Anurans” related to this unusual trait?

Where is the tympanic membrane on a frog? Where is our tympanic membrane?

What is unusual about a frogs tongue?

Identifying the sex of a frog can be difficult since there are not obvious external structures. Besides the tympanic membrane (which is usually slightly larger in males) what is another indicator of what sex the frog is?

Frogs and humans both have nostrils and eustachian tubes. However, unlike humans, frogs’ nostrils connect to the roof of their mouth, as do their eustachian tubes. What is the function of the eustachian tubes?

What is the function of the glottis? (humans have a similar structure called the epiglottis that does the same job)