1 biology 102 lab 11 human/cat digestive system gross/microscopic anatomy
TRANSCRIPT
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Biology 102
Lab 11 Human/Cat Digestive System
Gross/Microscopic Anatomy
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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.)
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Major Organs of Digestive SystemFigure 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
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The Greater and Lesser Omenta
Figure from: Saladin, Anatomy & Physiology, McGraw Hill, 2007
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Palate and Pharynx• roof of oral cavity
(adenoids)
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Figure from: Hole’s Human A&P, 12th edition, 2010
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Salivary Glands
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Figure from: Hole’s Human A&P, 12th edition, 2010
Figure from: Saladin, Anatomy & Physiology, McGraw Hill, 2007
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Esophagus
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Esophagus lies behind the tracheaFigure from: Hole’s Human A&P, 12th edition, 2010
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Position of Spleen
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Stomach
Greater curvature
Pyloric sphincter = pylorus
Cardiac sphincter
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Pyloric antrum
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Figure from: Hole’s Human A&P, 12th edition, 2010
Simple columnar epthelium Gastric pits
Gastric glands in lamina propria
Parietal cells
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Pancreas
- Main duct*Accessory duct *
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Figure from: Hole’s Human A&P, 12th edition, 2010
Acinar tissue
Ducts
Pancreatic islets
Duct
Acinar tissue
Pancreatic islet
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Liver (Hepato-)
Figure from: Martini, Anatomy & Physiology, Pearson Education, 2004
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Liver
lobule
Liver sinusoids
Central
vein
Central vein
Hepatocytes
Sinusoids
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Hepatobiliary System
You will be sketching this today for your lab report.
Figure from: Hole’s Human A&P, 12th edition, 2010
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Three Parts of Small Intestine
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Figure from: Hole’s Human A&P, 12th edition, 2010
Muscularis mucosae
Intestinal crypts
Duodenal glands
Serosa
Mucosa
Submucosa
Muscularis externa
Vill
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Muscularis mucosae
Intestinal crypts
Circular muscle of muscularis externa
Duodenal glands
Villi
Submucosa
Simple columnar epithelium
Longitudinal muscle of muscularis externa
Serosa
Myenteric nerve plexus
Longitudinal muscle
Circular muscle
Circular muscle
Myenteric nerve plexus
Longitudinal muscle
Simple columnar epithelium
Microvilli
Villus
Lamina propria of villus
Nuclei
Nuclei
Goblet cell
Simple columnar epithelium
Basement membrane
Plica circulares Submuco
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Muscularis externa
Submucosa of plica circulares
Peyer’s patches
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Large Intestine
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Submucosa
Mucosa
Serosa
Teniae coli
Circular muscle of muscularis externa
Intestinal
crypts
Goblet cells
Muscularis mucosae
Submucos
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Simple columnar epithelium
Submandibular gland
Parotid gland
Esophagus
Urethra
Greater omentum
Liver
Respiratory diaphragm
Gallbladder
Stomach
Spleen
Urinary bladder
Urinary bladder
Small intestine
Spleen
Stomach
Liver
Lesser omentum
Greater omentum
Adipose tissue
Stomach
Spleen
Left lateral lobe
Left medial lobe
Diaphragm
Heart
Falciform ligament
Gallbladder
Right medial lobe
Right lateral lobe
Caudate lobe
Pancreas
Hepatic ducts
Duodenum
Stomach
Bile duct
Liver
Gallbladder
Cystic duct
Small intestine
Cecum
Duodenum
Pancreas
Mesentery
Large intestine
Kidney
Pancreas
Greater omentum
Cecum
Small intestine
Urinary bladder
Uterus
Ileum
Mesentery
Greater omentum
Spleen
Ascending colon
Stomach
Lesser omentum
Left lobes of liver
Falciform ligament
Gallbladder
Right lobes of liver
Duodenum
Pancreas
Ileocecal junction
Cecum
Jejunum
Small intestine
Urinary bladder
Urethra Descending colon
Kidney
Respiratory diaphrag
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Liver
StomachPancrea
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Spleen
Intestines
Pancreas
Adrenal gland
Left kidney
Small Intestine
Stomach
Liver
Diaphragm
Rugae
Pancreas
Mesentery
Lymph nodes
Small intestine
Colon
Spleen
Small intestine
Cecum
Ileocecal valve
Ileum
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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
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