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Biology 102 Lab 11 Human/Cat Digestive System Gross/Microscopic Anatomy. Objectives for Today. Identify the structures of the digestive system that are listed in your Laboratory Guide, given either a model or photograph of a model
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Biology 102 Lab 11 Human/Cat Digestive System Gross/Microscopic Anatomy
Objectives for Today • Identify the structures of the digestive system that are listed in your Laboratory Guide, given either a model or photograph of a model • Be able to sketch the hepatobiliary system (Liver, Bile ducts, and Gall bladder) and surrounding organs, labeling all relevant structures. (You will hand your sketch in as your lab report.)
Major Organs of Digestive System Figure from: Saladin, Anatomy & Physiology, McGraw Hill, 2007 • Organs can be divided into the: • Digestive tract (alimentary canal); tube extending from mouth to anus (about 30 ft.) • Accessory organs; teeth, tongue, salivary glands, liver, gallbladder, and pancreas
The Greater and Lesser Omenta * * * * * * * * * Figure from: Saladin, Anatomy & Physiology, McGraw Hill, 2007
Palate and Pharynx • roof of oral cavity Figure from: Hole’s Human A&P, 12th edition, 2010 (adenoids) * *
Salivary Glands * Figure from: Saladin, Anatomy & Physiology, McGraw Hill, 2007 * * Figure from: Hole’s Human A&P, 12th edition, 2010
Esophagus * * Esophagus lies behind the trachea Figure from: Hole’s Human A&P, 12th edition, 2010
Stomach * Cardiac sphincter * * * Greater curvature * * Pyloric antrum * Pyloric sphincter = pylorus Figure from: Hole’s Human A&P, 12th edition, 2010
Simple columnar epthelium Gastric pits Gastric glands in lamina propria Parietal cells
Pancreas Figure from: Hole’s Human A&P, 12th edition, 2010 * * * * * * Accessory duct * * - Main duct * *
Acinar tissue Ducts Pancreatic islets
Acinar tissue Duct Pancreatic islet
Liver (Hepato-) * * * * * * * Figure from: Martini, Anatomy & Physiology, Pearson Education, 2004
Liver lobule Liver sinusoids Central vein
Hepatocytes Sinusoids Central vein
Hepatobiliary System You will be sketching this today for your lab report. Figure from: Hole’s Human A&P, 12th edition, 2010
Three Parts of Small Intestine * * * * * * * Figure from: Hole’s Human A&P, 12th edition, 2010
Villi Muscularis mucosae Mucosa Submucosa Muscularis externa Intestinal crypts Duodenal glands Serosa
Simple columnar epithelium Submucosa Villi Muscularis mucosae Intestinal crypts Circular muscle of muscularis externa Longitudinal muscle of muscularis externa Duodenal glands
Longitudinal muscle Circular muscle Serosa Myenteric nerve plexus
Circular muscle Myenteric nerve plexus Longitudinal muscle
Nuclei Simple columnar epithelium Microvilli Villus Lamina propria of villus
Nuclei Goblet cell
Muscularis externa Plica circulares Submucosa Peyer’s patches Submucosa of plica circulares
Large Intestine * * * * * * * * *
Submucosa Mucosa Circular muscle of muscularis externa Teniae coli Serosa
Intestinal crypts Goblet cells Simple columnar epithelium Muscularis mucosae Submucosa
Parotid gland Submandibular gland
Respiratory diaphragm Gallbladder Liver Stomach Spleen Greater omentum Urinary bladder Urethra
Liver Lesser omentum Stomach Spleen Greater omentum Small intestine Adipose tissue Urinary bladder
Heart Falciform ligament Diaphragm Left medial lobe Gallbladder Right medial lobe Left lateral lobe Right lateral lobe Spleen Caudate lobe Stomach
Bile duct Liver Gallbladder Stomach Cystic duct Duodenum Pancreas Hepatic ducts
Pancreas Duodenum Cecum Small intestine
Greater omentum Pancreas Cecum Kidney Small intestine Large intestine Mesentery Urinary bladder Uterus
Gallbladder Falciform ligament Right lobes of liver Left lobes of liver Duodenum Lesser omentum Stomach Pancreas Ileocecal junction Ascending colon Cecum Spleen Jejunum Greater omentum Mesentery Small intestine Ileum Descending colon Urinary bladder Urethra
Spleen Stomach Pancreas Intestines Liver Respiratory diaphragm Kidney
Diaphragm Liver Pancreas Adrenal gland Stomach Left kidney Small Intestine
Lymph nodes Pancreas Mesentery Small intestine
Ileum Colon Ileocecal valve Spleen Cecum Small intestine
What You Should Do in Lab Today… • Locate the structures listed in your Laboratory Guide using • Individual models of organs • Torso models • Cats • Sketch the hepatobiliary system as outlined on the sheet handed out today and hand that in before leaving today. • Look at the Respiratory System Structures in the cat if you haven’t done so already.
For next lab… • Digestive System Enzyme experiment • Please read the protocol for this experiment online. • We will be examining the factors influencing the digestive enzymes we discussed in lecture