October 3 Flashcards
What is alcohol?
Produced naturally from sugars through fermentation
Standard drink (beer)
- 12oz
- 5%
Standard drink (cider/cooler)
- 12oz
- 5%
Standard drink (wine)
- 5oz
- 12%
Standard drink (distilled alcohol)
- 1.5oz
- 40%
Motives (from most to least frequent)
1.) Social
2.) Enhancement
3.) Coping
4.) Conformity
Absorption of alcohol
- 20% stomach
- 80% upper intestine
Distribution of alcohol
- Evenly distributed throughout the body
- Freely crosses the BBB
* Lipophilic
- Freely crosses the BBB
FASD
Fetal alcohol spectrum disorder
- A collection of physical and behavioural abnormalities caused by the presence of alcohol during fetal development
FASD (characteristics)
- Growth suppression
- Pattern of abnormal features of the face and head
- CNS abnormality
Predictors of alcohol metabolism rate
- Number of drinks consumed
- Sex
- Weight
- Resulting BAC
Exceptions:
- Tolerance and cross tolerance in long-term use
- Production of variant ADH1 in chronic use
Metabolic process of breaking down alcohol
1.) Alcohol dehydrogenase (ADH) functions to convert alcohol to acetaldehyde
2.) Enzyme ADH converts acetaldehyde to acetic acid
3.) Acetic acid is broken down into carbon dioxide and water (largely takes place outside the liver; heart, skeletal muscles, brain)
Alcohol and GABA receptors
- Alcohol activates GABA receptors -> neural inhibition
- Sedative properties
- Seizures during withdrawal
Alcohol and glutamate
- Alcohol inhibits glutmate
- NMDA receptors
- Cognitive impairments and memory disruption
- Hyper excitability and cravings during withdrawal