1. “Perplexity is the beginning of knowledge.”
11/12/2018
Title: Anat & Phys 2/20/07
Objectives: .
Class Topics
Lab Practical III & muscle anatomy test
Digestive System
“Perplexity is the beginning of knowledge.”
Kahlil Gibran
Monday, November 12, :35 PM

2. Class Assignments Lab Practical III 2/20/07 Muscle Power Point 2/22/07
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Class Assignments
What
By When
Lab Practical III 2/20/07
Muscle Power Point 2/22/07
Due this class period
Due next class period
Due in the future

3. From: http://www.agen.ufl.edu/~chyn/age2062/lect/lect_20/27_22.GIF
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From:

4. Steps of digestion 1. Ingestion - place food in mouth
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1. Ingestion - place food in mouth
Conscious control
2. Mechanical processing
mouth - chewing and tearing of food
mastication
stomach - churns food
3. Digestion
breakdown of food into small organic particles
Glucose from carbs, amino acids from protein

5. Steps of digestion 4. Secretion 5. Absorption 6. Elimination
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Steps of digestion
4. Secretion
Enzymes, acids, saliva, buffers, bile
5. Absorption
Movement of organic materials into cells
6. Elimination
Defecation of wastes
Fiber moves you
coprophagy - eating feces - some types of rabbits

6. Histological Organization
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Histological Organization
1. Mucosa
inner lining of tract
secretes mucus
contains endocrine cells
releases into bloodstream, not tract
Highly folded - more surface area
microvilli - small projections to increase surface area
Cells renew every 2-6 days

7. 2. Submucosa Mainly connective tissue
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2. Submucosa
Mainly connective tissue
Blood vessels carry away nutrients
Lymphatic vessels for immune response and fat transport
Exocrine glands
acids, buffers, enzymes
Nerves - autonomic control (unconscious)

8. 3. Muscular Smooth muscle 2 layers Move articles by peristalsis
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3. Muscular
Smooth muscle
2 layers
longitudinal
circular
Move articles by peristalsis

9. 11/12/2018
4. Serosa
Connective tissue
Outer protective covering