The first part includes external anatomy, which allows teachers to keep the frogs intact for the next class. This lab is specially designed to be completed in two class sessions. Frogs are vertebrates in a class called Amphibians. What adaptation have amphibians developed to help maintain separation of oxygenated and deoxygenated blood within the heart? Spiral valve Which features of the skeletal system in frogs represent specific adaptations for jumping? Urostyle, tibiofibula, metatarsals Which two accessory digestive organs release compounds into the duodenum through the bile duct? Pancreas and liver What is the functional difference between a cloaca and an anus? Anus only releases feces, cloaca releases urine, feces, gametes How many chambers does a frog heart have? Is the circulatory system open or closed? Three chambers, closed Describe how a portal system differs from a regular circulatory pathway In circulatory, blood flows from capillary beds to the heart. To gain a first-hand knowledge in vertebrate anatomy students are asked to dissect toad or frog at the very beginning. Frogs produce a huge number of eggs at one time - WHY do you think this is 17. This document was uploaded by user and they confirmed that they have the permission to share it. This one has everything you need: just add frogs Includes lab directions, student worksheets, diagrams and pictures of frog anatomy, and discussion questions.
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