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ANSC 221 Wk 1
Animal Nutrition
46
Nutrition
Undergraduate 2
06/14/2018

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Term
Nutrition
Definition
Interrelated steps by which a living organism assimilates food and uses it for growth, tissue repair, replacement, or elaboration of products
Term
Nutrient
Definition
Any chemical element or compound that supports normal reproduction, growth, lactation, or maintenance of life processes
Term
Components of food
Definition
Water, dry matter: organic and inorganic
Term
Six major nutrients
Definition
Water, protein, carbohydrate, fat, vitamins, and minerals
Term
Cell
Definition
The smallest structural and function unit of life
Term
Cell walls
Definition
Found in plant cells; give plants shape and protect against pathogens, dehydration, and other environmental factors
Term
Chloroplasts
Definition
Contain chlorophyll and are essential for photosynthesis to occur
Term
Photosynthesis
Definition

Process in which sunlight is used to convert carbon dioxide and water to glucose and oxygen

6CO2 + 6H2O + light --> C6H12O6 + 6O2

Term
Nucleus
Definition
Houses DNA
Term
Rough Endoplasmic Reticulum (ER)
Definition
Protein synthesis, processing proteins, organelle formation, and vesicle formation
Term
Smooth ER
Definition
Lipid synthesis, processing molecules, detoxification, vesicle formation
Term
Ribosomes
Definition
Protein synthesis
Term
Mitochondria
Definition
Produce ATP from organic molecules such as glucose
Term
Key nutrients
Definition
Plants: require only inorganic elements to thrive and animals eat plants
Term
Herbivore
Definition
An animal that eats almost only plants; a rabbit
Term
Carnivore
Definition
An animal that eats almost only meat; a lion
Term
Omnivore
Definition
An animal that eats plants and meat; a pig
Term
Water
Definition
Necessary for metabolism and temperature regulation
Term
How animals obtain water
Definition
Drinking, water contained in feed, metabolic water, and condensation
Term
Cohesion
Definition
Attraction between water molecules due to hydrogen bonding
Term
Adhesion
Definition
Attraction between water molecules and a substance other than water
Term
Surface tension
Definition
Inward pulling of cohesive forces at surface of water
Term
Water and its high heat of vaporization
Definition
Helps keep the body cool via sweating
Term
Water and its high specific heat
Definition
Contributes to keeping the body temperature constant by minimizing changes
Term
Solute
Definition
Substance that is being dissolved
Term
Solvent
Definition
Substance that dissolves particles
Term
Universal solvent
Definition
Water: most substances dissolve in it
Term
Gastrointestinal tract
Definition
Also called the alimentary canal
Term
Alimentary canal organs
Definition
Oral cavity, pharynx, esophagus, stomach, small and large intestines
Term
Accessory organs
Definition
Salivary glands, tongue, pancreas, liver, and gallbladder
Term
Diffusion
Definition
Movement of molecules from high concentration to low concentration; passive
Term
Metabolism
Definition
Biochemical reactions inside cells involving nutrients
Term
Types of metabolic reactions
Definition
Anabolism and catabolism
Term
Anabolism
Definition
synthesis of large molecules from small ones
Term
Catabolism
Definition
Hydrolysis of complex structures to simpler ones
Term
Peristalsis
Definition
Major means of propulsion: alternating waves of contraction/relaxation
Term
Segmentation
Definition
Mixing of food with GI juices, making absorption more efficient
Term
Ruminant
Definition
Four-chambered stomach
Term
Non-ruminant
Definition
One stomach chamber
Term
Food pathway of ruminants
Definition
Mouth to stomach back to mouth then to stomach again and finally intestines
Term
Food pathway of non-ruminants
Definition
Mouth to stomach and then to intestines
Term
Absorption
Definition
Occurs mostly in the small intestine
Term
Pancreas and liver
Definition
Both release digestive enzymes into the first part of the small intestines to aid digestion and absorption
Term
Cecum
Definition
Allows for the breakdown of cellulose by herbivores
Term
Small intestine's surface area increasers
Definition
Circular folds, villi, and microvilli
Term
Herbivore vs. carnivore GI tract
Definition
Herbivores have longer intestines and a larger cecum while carnivores don't because they don't have as much cellulose to digest
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