Title: Anat & Phys 3/2/07 Stomach Video “Fat and Happy” Objectives:

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Presentation transcript:

Title: Anat & Phys 3/2/07 Stomach Video “Fat and Happy” Objectives: 11/18/2018 Title: Anat & Phys 3/2/07 Objectives: . Class Topics Stomach Video “Fat and Happy” "The pessimist sees difficulty in every opportunity. The optimist sees opportunity in every difficulty." Winston Churchill Sunday, November 18, 2018 4:54 PM

Class Assignments Due this class period Due next class period 11/18/2018 Class Assignments What By When Due this class period Due next class period Due in the future

Stomach 3 major functions 11/18/2018 Stomach 3 major functions 1. Storage of ingested food 2. Disruption of chemical bonds found in ingested food 3. Mechanical processing of ingested food

11/18/2018 Stomach Produces soupy mixture of partially digested material, acids, enzymes chyme Rugae: many folds allows for expansion 1.0-1.5 liters in a full stomach

Stomach regions Cardia Pylorus Fundus Body secretes mucus 11/18/2018 Stomach regions Cardia secretes mucus Fundus used in cases of a very full stomach can contain air burp Body region of mechanical processing Most gastric pits Pylorus region in which chyme is transported to small intestine

11/18/2018 Stomach Drawing

Gastric Pits Found in mucosa and submucosa Secrete gastric juices 11/18/2018 Gastric Pits Found in mucosa and submucosa Secrete gastric juices Parietal cells secrete HCl transported as two separate ions pH - 1.5-2.0 breaks down cell walls and connective tissue kills most microorganisms activates pepsin (digestive enzyme)

Gastric Pits Chief cells Endocrine cells secrete pepsinogen 11/18/2018 Gastric Pits Chief cells secrete pepsinogen inactive enzyme cleaves into pepsin (HCl) Endocrine cells secrete hormones gastrin - stimulates secretions from parietal and chief cells and muscle contractions

Video Fat and Happy Eating to Live Complete the worksheet 11/18/2018 Video Fat and Happy Complete the worksheet Eating to Live Make a note of the different areas of the digestive tract throughout the video

Ruminant Digestion 4 chambered stomach Reticulum Rumen Omasum abomasum 11/18/2018 Ruminant Digestion 4 chambered stomach Reticulum Rumen Omasum abomasum

Gastric Bypass Surgery 11/18/2018 Gastric Bypass Surgery NIDDK web site Image taken from http://www.georgetownsurgical.com/procedure.html

11/18/2018

11/18/2018 Other examples Rabbits Horses