The Anatomical and Physical Features of Frogs

Topics: Liver, Amphibian, Tetrapod Pages: 3 (872 words) Published: March 14, 2011
The Anatomical and Physical Features of Frogs

Abstract: People have always wondered how frogs have the capability to live in both wet and dry environments. So why not dissect a frog to find out how. Frogs have both physical features like their skin that allows them to breath in water. They also have anatomical features like humans that allow them breath air just like us. Introduction

As many people have learned throughout elementary and middle school amphibians are animals that have the physical capabilities to live in water and on land. Sarah Wilkes states that the amphibian derived from the Greek word amphibious, meaning “double life” (4). There are several types of amphibians which include frogs, toads, newts, salamanders, and caecilians. They are classified as vertebrates. They have a vertebral column, which is a series of small bones that run down their back to provide support. The same column can be found in mammals, birds and reptiles (Wilkes 4). Amphibians breathe through their moist skin as well as their lungs. They have long sticky tongues and they have ears but are internal unlike mammals. They smell using the roof of their mouth using a nerve called the Jacobson’s organ. They mostly have limbs similar to mammals but with different features. They have four digits on their front limbs and five digits on their hind limbs (Wilkes 4). Amphibians go through a series of physical changes called metamorphosis. Frogs lay eggs that hatch into larvae, called tadpoles that live in water and slowly change into small frogs (Wilkes 5). Since frogs are classified as amphibians do they have same anatomical features as other amphibians that allow them to live comfortably in both water and dry environments? This will be tested by conducting a frog dissection to identify to organs needed to survive in both environments. Methods

In order to conduct this experiment you will need a frog, preferably dead, a clean organized work station, a dissecting pan,...

Cited: Wilkes, Sarah. Amphibians. Milwaukee: World Almanac Library, 2006.
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