BIOL 1361 1nd Edition Lecture 4 Outline of Last Lecture I. Essential Nutrients for AnimalsII. Ingestion & DigestionIII. Intracellular and Extracellular DigestionIV. Gastrovascular CavityV. Alimentary Canal = “Gut”VI. Digestive SystemOutline of Current Lecture I. Hormonal Regulation of DigestionII. More than a MouthfulIII. Designing the ExperimentCurrent LectureI. Hormonal Regulation of Digestiona. Hormones coordinate timing of digestive secretions to the arrival of food in each compartmentb. Digestive Process (chart below)i. (-) inhibitsii. (+) stimulatesStimulus SecretoryOrganHormone Target Effect onTarget OrganFood Stomach Gastrin Stomach + HCl, pepsin, mucusAcid Duodenum Secretin Pancreas + HCO3-These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.Stomach- Gastric JuiceAmino Acids & FatsDuodenum Cholecystokinin PancreasGallbladderStomach+ enzymes+ bileGastric juice, pyloricopeningII. More than a Mouthfula. Burmese Python Rangei. Natural Habitat is in SE Asiaii. Naturalized Population in the Florida Evergladesb. African Rock Python Eating Antelope (video)c. Worksheet with questions handed out in class about Burmese Python1. Do all physiological systems have the possibility to change their digestive capacities? (BROAD)2. The hypothesis that the author suggests is that a digestive system of the Burmese Python snake has the capability to adjust their digestive system to the organism consumed and increase their capacity synchronously. (NARROWER STATEMENT)3. The authors already know that the python digestive system can increase their organ size, intestinal epithelium increases, and the nutrient absorption of the epithelium increases as well.III. Designing the Experimenta. Controlled Variable – condition that is kept similar for all experimental groups becausei. Has a previously known and predictable effectii. Might have an effect, but not of current experimental interestb. Prepare for Q: Identify the controlled variable (specific problem in class)i. Controlled variable is… the fasting period, diet, and body lengthii. Independent variable is… time after the
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