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Name: ____________________________ Block: ____ Date: ______________________ BIOLOGY 11 FROG LAB Follow the dissection procedure in the lab manual on pages 183-186. PART 1: Mouth (7 marks) Label the diagram of the frog’s mouth with the following terms: vomerine teeth, maxillary teeth, openings to the vocal sac, openings to the Eustachian tubes, gullet opening, tongue, and glottis. PART 2: Hind Leg Muscles (5 marks) Sketch a diagram of the dorsal muscles of the hind leg. Label an extensor (contraction causes a joint to straighten) and a flexor (contraction causes a joint to bend). Name: ____________________________ Block: ____ Date: ______________________ BIOLOGY 11 PART 3: Internal structures (17 marks) Label the diagrams of the internal anatomy below. Name: ____________________________ Block: ____ Date: ______________________ BIOLOGY 11 PART 4: Functions of the Internal Organs (17 marks) Digestive System pharynx __________________________________________________________ esophagus _________________________________________________________ stomach __________________________________________________________ liver _____________________________________________________________ gall bladder stores bile_______________________________________________ pancreas __________________________________________________________ small intestine _____________________________________________________ mesentry __________________________________________________________ large intestine ______________________________________________________ cloaca ____________________________________________________________ Reproductive, Circulatory, & Excretory Systems left atrium _________________________________________________________ right atrium ________________________________________________________ ventricle __________________________________________________________ glottis ____________________________________________________________ lungs ____________________________________________________________ ovary/testis________________________________________________________ kidneys ___________________________________________________________ bladder ___________________________________________________________ Name: ____________________________ Block: ____ Date: ______________________ BIOLOGY 11 PART 5: Discussion Questions (14 marks) 1a) What is unusual about the attachment of the tongue? __________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ b) What is the advantage of this attachment? __________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ 2. What might be the function of the vomerine teeth?______________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ 3. How are the positions of the eyes and external nostrils appropriate for life in the water? ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ 4. How are the relative lengths of the frog’s small intestine and large intestine related to their functions? ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ Name: ____________________________ Block: ____ Date: ______________________ BIOLOGY 11 5. Which three body systems does the cloaca belong to and what is the function in each? ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ 6. How is the frog’s heart different from the hearty of a fish? _______________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ 7. The ventricle has thicker, more muscular walls than the atria. Relate this difference in wall structure to the functions of the two types of heart chambers. ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________
