Chapter 8 BB flashcards

Liking

is a sensory-stimulating experience closely associated with pleasure
Opioids are the key nuerochemical

Wanting

is closely related to motivation and drive, an emotions experience that builds
Key nuerochemical is dopamine

learning association

we learn to associate smells, tastes, thoughts, images, faces, etc with rewarding/ negative outcomes
Associations between events or responses that lead to pleasurable responses
Key neurochemicals include dopamine, serotonin, and acetylcholine

ventromedial hypothalamus

Bilateral Lesioning of this area led to overeating and obesity in lab rats ( satiety center)
Role in insulin secretion

lateral hypothalamus

Bilateral lesioning of this area resulted in reduced eating and decreased body eeight in lab rats ( hunger center)

Insulin

neurochemical
Secreted from the Pancreas
Facilitates the storage of energy in body fat and liver tissue

Leptin

Hormone that plays a key role in hunger regulation Produced in adipose tissue (fat cells)
Mice who were deficient became obese
Critical hunger regulatory signal conveying metabolic info from the body to the hypothalamus

Grehlin

Chemical secreted by endocrine cells in the stomach
Activates receptors in the arcuate nucleus of the hypothalamus (NPY/AgRP)
Levels decrease after a meal, and increase during fasts

Nueropeptide Y (NPY)

Released from the hyptothalmus when energy demands increase
increased food intake; appetite stimulating (orexigenic)
Leptin and insulin inhibits it
Ghrelin stimulates it

arcuate nucleus of the hypothalamus

Located in the hypothalamus
Control center for eating
Produce AgRP, NPY, cocaine- and amphetamine-regulated transcript (CART), Proopiomelanocortin (POMC) neurons

Anorexia nervosa

Being at a significantly low bodyweight for ones developmental stage, having an exaggerated fear of gaining weight, having an unrealistic perception of weight, and demonstrating persistent behavior that interferes with weight gain

bullimia nervosa

An eating disorder characterized by the behaviors of binging (excessive overeating) and purging (removing food from one’s system via strategies such as self-induced vomiting or use of laxatives).