brain signaling for food
DESCRIPTION
Brain Signaling for Food. By George Han, Sean Feng. INTRO. Essential part of life, nutrition, vitamins Brain signals the quantity intake of food Affected by smell, sight, and memory Brain turned on by taste and emotion. Hypothalamus signals nerves in the stomach - PowerPoint PPT PresentationTRANSCRIPT
Brain Signaling for Food
By George Han, Sean Feng
Essential part of life, nutrition, vitamins
Brain signals the quantity intake of food
Affected by smell, sight, and memory
Brain turned on by taste and emotion
INTRO
Hypothalamus signals nerves in the stomach
Determines specific appetite
Amino acids (protein), fatty acids (fat), glucose (carbohydrates)
Insulin hormone sends brain message
Low glycogen level/Low blood sugar levelStimulate activity in hypothalamusIncreasing sweet/starchy food desire
Ghrelin/Leptin circulationNPY
Different types of foodSweet/StarchyHigh caloriesFat food
Leptin levels increase= cause of fullnessInhibit firing of NPY
Galanin fat connectionStores up fatEveningEnough calories to last through night
Food digested feeds body cells
Chlecystokinin (CCK)
Causing fullness, less appetiteBulimia
Over eating disorderBinge purge syndromeCCK mechanism doesn’t function
AnorexicsSuffering from extreme thinCCK mechanism is oversized
To sum up…Human body has a complex system that signals our body for hunger.Brain plays a big part of our survival instinct. Bulimia and anorexia are caused by CCK malfunction.
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