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Skip Navigation LinksKCC Home > Academic Departments > Biological Sciences > Bio14 > Lesson 20-Animal Nutrition

Lesson 20 Animal Nutrition

 

I. Introduction

A. Importance of food for the organism

 

II. Nutritional requirements

A. General view

1. Homeostatic mechanism

a. Glucose example

b. Calorie imbalance

c. Obesity

2. Essentrial nutrients

a. Essential amino acids

b. Essential fatty acids

c. Vitamins

d. Minerals

 

III. Food types and feeding mechanisms

A. Food types

1. Herbivorous

2. Carnivorous

3. Omnivorous


B. Feeding mechanisms

1. Suspension feeders

2. Substrate feeders

3. Fluid feeders

4. Bulk feeders

 

IV. Overview of food processing

A. Main stages of food processing


B. Types of digestion systems

1. Incomplete

a. Intracellular digestion

b. Extracellular digestion

2. Complete

a. Alimentary canal

 

V. Mammalian digestive system:general description in humans

A. Oral cavity: first place for food processing


B. Stomach


C. Small intestine

1. Description

2, Enzymatic action (chemical breakdown)

a. Carbohydrate digestion

b. Protein digestion

c. Nucleic acid digestion

d. Fat digestion

3. Absorption of nutrients

4. Role of hormones in digestion


D. Large intestine

1. Absorption of water and vitamin synthesis

2. Excretion (rectum)

 

VI. Evolutionary adaptation of vertebrate digestive system

A. Structural adaptations


B. Importance of symbiosis

 
 
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