Chapter 4; Physiological Needs Flashcards
Psychological drive
Conscious byproduct of a physiological need that allows for homeostatic following compensatory behavior
Homeostasis is maintained though
Psychological drives that Ellicott behavior via negative feedback loops.
Elements of negative feedback
System variable( temp ) , set point ( ideal temp ) , detector ( thermostat) correctional mechanism ( electric heater). Hear turns of heater : negatuve feedback . Physiological drive activates compensatory mechanism but there needs to be moving away from compensatory mechanism though negatuve feedback
Regulation fundaments
Multiple inputs cause drive and or outputs can lead to reduction of drive.
Antecedents do _________ predict behaviors
Not directly
Intraorganismic systems
Biological regulatory systems that activate, maintain and terminate biological needs underlying drives and are brain, endocrine system and bodily organs
Extraorganismic mechanisms
Environmental influences that active mantain and terminate psychological drive. Cognitive, environmental, social and cultural factors.
Osmometric thirst regulation
Intercellular fluid looses water to high solute concentration extracellular, leads to activation of omometric receptors sending signals to lamia terminalis and anterior cingulate ungilate cortex . Brain scans show lamina terminalis stays while ACC goes saying thirst lasts longer and is from ACC but 20 mins for cells fluid levels to return tibjyoisrasur
Volumetric thirst
Dete Tor cells in heart and kidneys detect low plasma level, leads to angiotensin formation from renin to angiotensin and release of vasopressin.
Stretch sendituve cells ( baroreceptors )in heart atria detect when blood bol in heart falls
Satiety in thirst
Monitors the compensatory mechanism ( thirst ) not the detectors ( lamina terminalis ,).
Environmental influences in drinking
Incentive properties show small changes to water spur salt bitter or sweet positive at low levels but higher quicker move to negative ( bitter salt ) or positive ( sweet) and increase drinking. Beverages are consumed for attractive incentive, cultural idea to drink 8 go pass water a day, non thirst related attraction or addiction to water ( caffeine).
Which physiological need is more regulated by extraorganismic mechanism ?
Sex
The major negative feedback system that requlates and lessens the experience of thirst and inhibits drinking is
Cells, mouth, stomach
The most important environmental influence on drinking behavior is
Taste
Without water replenishment the typical human will die in about
3 days