Take a Breath Discussion

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Consider air and water as respiratory media. Which contains a greater concentration of oxygen? Which takes more energy to move over the respiratory surface? Why can’t mammals and insects survive underwater without access to air? Do you think humans have the ability to evolve to breath underwater, why?

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.Digestive System.1- Label the digestive system.1- ________________________________ 12- ________________________________2- ________________________________ 13- ________________________________3- ________________________________ 14- ________________________________4- ________________________________ 15- ________________________________5- ________________________________ 16- ________________________________

Biology 1409 – Chapter 36 Vertebrate Anatomy Digestive and Urinary system PROFESSOR M. KAROUT – COLLIN COLLEGE226- ________________________________ 17- ________________________________7- ________________________________ 18- ________________________________8- ________________________________ 19- ________________________________9- ________________________________ 20- ________________________________10- ________________________________ 21- ________________________________11- ________________________________ 22- ________________________________2- What are the functions of the liver?3- What is the function of the gallbladder?4- What are the functions of the stomach?5- Which structure is shared by the respiratory and digestive systems?