Term
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Definition
| -Adaptive behavioral responses to nutrient deficiencies, metabolic imbalances, and other threats to the internal milieu in order to maintain certain critical survival variables at optimal levels |
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Term
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Definition
| -3 basic components= carbs,fats, and proteins |
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Term
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Definition
-Stored at the liver
-Stores carbohydrates- glucose
-glucose is converted to glycogen by insulin |
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Term
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Definition
-Adipose tissue
-Stores fats as triglycerides |
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Term
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Definition
- Carbs are converted to glucose and blood glucose goes up
-Pancreas releases insulin
-Cells take glucose
-Proteins are broken down into amino acids
-Fats are stored as fats |
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Term
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Definition
-Fasting so blood glucose level drops
-Pancreas releases glucagon= causes the stored glycogen to be converted to glucose to be usedd for fuel
-Body can use fatty acids obtained from the fat storage being broken down. |
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Term
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Definition
-The transporters have insulin receptors on them
-Cells need insulin to activate their glucose receptors |
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Term
| Satiety signals( head factors) |
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Definition
- Mouth and Mouth movements, chewing, etc
-Send info via 3 cranial nerves to the nucleus of the solitary tract(NST) |
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Term
| Satiety Signals(Gastric factors) |
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Definition
-Stretch receptors in the stomach
-Can detect nutrients
-Send info via the vague nerve to the NST. |
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Term
| Satiety Signal (Intestinal factor) |
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Definition
-Contain nutrient receptors
-Duodenum contains liporeceptors
-Fat in the duodenum causes the release of Cholecystokinin (CCK)
-CCK causes the gall bladder to release bile |
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Term
| Lateral hypothalamus (LH) |
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Definition
-thought to be a feeding center
-Lesion LH
-2 population of neurons: Melanin (MCH) and Orexin |
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Term
| Ventromedial hypothalamus (VMH) |
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Definition
-Thought to be a satiety center'
-Lesion VMH
-thought to regulate the LH |
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Term
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Definition
- Stimulate appetite
-Reduces metabolic rate |
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Term
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Definition
| -Neurons in the arcuate nucleus that project to the MCH and orexin neurons in the LH |
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Term
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Definition
| - Glucoreceptors and liporeceptors - NST- Parabrachial area - NPY neurons in arcuate - MCH and orexin neurons in LH - stimulates appetite and reduces metabolic rate. |
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Term
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Definition
-Innate or acquired differences in metabolism
- Treatments= Jaw wiring, stomach stapling, reduction, excercise and drugs |
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Term
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Definition
| -Eating disorder in which an exaggerated concern with being overweight leads to excessive dieting and compulsive exercising and can lead to starvation |
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Term
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Definition
-Eating disorder that is characterized by a loss of control of food intake
-treatment= prozac |
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