Flashcards in Nutrition part 2 Deck (133)
What are the GI functions?
intake of nutrients
breakdown of food particles
nutrients moving from GI tract to blood stream
getting rid of fecal contents
What are the 6 classes of nutrients?
What sources are macronutrients?
What sources are micronutrients?
Primary energy source
Dietary recommendations: 45%-65%
of total daily calories
storage form of energy in plants
cannot be broken down by digestive enzymes (undigestible), roughage
• Decreases risk of heart disease by binding to
cholesterol (eliminated in feces)
• Decreases risk of constipation by increasing
fecal mass and retention of water (bulk)
contain no calories or an insignificant amount of calories
Why do you have to be careful about giving people the nonnutritive sweetener aspartame?
these sweeteners contains phenylalanine, an amino acid that some people may not be able to break down
-found in nature
-used as a natural sweetener
-may cause gas and diarrhea
sugar alcohols (polyols)
the building blocks of the human
body and contain amino acids
Dietary recommendations: 10%-35% of total
The type of protein and its function is dependent on?
--Number of amino acids
– Sequencing of amino acids
– Shape of the chain formed (straight, folded,
Obtain through our diet, our bodies do not make it
essential amino acids
may want to intake these amino acids
conditionally non-essential amino acids
our bodies make these amino acids
non-essential amino acids
What are the main functions of proteins?
• Growth and Maintenance (Anabolism)
– Muscle, Bone, Collagen, Hair, Nails, Skin
• Hormones and Enzymes
– Hormones (insulin, thyroxin)
– Enzymes (amylase, lipase)
• Immune System Response
• Transportation of Nutrients & Oxygen
– Assists nutrients in and out of cells
– Hemoglobin, Myoglobin
• Energy (Catabolism)(Gluconeogenesis)
– can break down protein if no other source available
• Blood Clotting
types and amounts of amino acids in a protein and its ability to be digested