Foods that we eat
The use the body makes of digested and absorbed foods
The break down of foods
Restructure of a larger molecule
Liver (role in nutrition)
Serves to mechanically digest lipids. Metabolism of all 3 kinds of foods. Detoxifies poisonous substances. Stores vitamins A and D
Carbs that are broken down into glucose (3 reactions)
Glycolysis: glucose-pyruvic acid
Citric acid cycle: Pyruvic acid-CO2
Electron transfer: transports released energy
Otherwise known as glycogenesis. This is used to store extra glucose
Helps regulate glucose level in blood
Performed if glucose amount is low
Performed if it is the only source of energy (starvation or those with eating disorders)
Arranging amino acids into necessary groups
Essential and nonessential foods
Essential foods must be in the diet while non essential foods can be made by the body.
Needed in small amounts for normal metabolism
Fat soluble vitamins
A, D, E and K
Water soluble vitamins
C and B
Inorganic elements or salts that serve the same function as vitamins
Basal metabolic rate
Rate at which food is catabolized at rest (but awake). Also known as BMR
Total metabolic rate
Total amount of energy used by the body every day. If you intake more calories than your TMR, you gain weight.
Body temperature (its role in nutrition)
60% of energy from food is used to keep homeostasis
The role of skin in nutrition
Skin helps with homeostasis by a negative feedback loop
4 ways that heat can be lost
Radiation: flow of heat away from blood
Conduction: transfer to external environment
Convection: transfer to air
Evaporation: absorption by water
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