Podcast #1http:// External Overview Name the sensory organs of the Frog Describe the feet and legs of the frog. How is this advantageous? What do most frogs eat? What kind of consumers are they? What does it mean to be amphibious? How is the frog’s tongue different from our tongue? Do frog’s have teeth? What are they like?

Describe the skin of the frog How do the muscles appear? What is the difference between dorsal and ventral? Dorsal Back means along length of spinal column. Ventral means along the belly side

Place the frog on its belly (ventral side) in the dissecting pan. Examine the hind legs and front legs of the frog. The hind legs are strong and muscular and are used for jumping and swimming. The forelegs provide balance and cushion the frog when it lands after jumping. Notice the difference between the toes of the hind legs and those of the front legs.

Feel the frog's skin. It is smooth, moist and thin. The frog can breathe directly through its skin as well as with its lungs. Turn the frog onto its ventral side and notice the color difference

 Female FrogMale Frog

Is it a Boy or a Girl frog? Behind each eye find the circular eardrum called a TYMPANUM. The tympanum show the two openings into the nasal cavity. The nasal openings, are also call EXTERNAL NARES. These are found toward the tipof the snout will closes when the frog is under water Male Frog On the male, the tympanum (eardrum) is larger than the eye. tympanum The tympanum is an external hearing structure inhearing animals such as frogs, toads, insects,frogstoads and mammals In females, the tympanum is about the same size as her eye In males, the tympanum is larger than his eye Female Frog