how would amphetamines and cocaine affect the nervous system?
Answers
Answer:
Explanation:
Short-term effects of amphetamine use include:
-Increased heart rate
-Increased blood pressure
-Reduced appetite
-Dilation of the pupils
-Feelings of happiness and power
-Reduced fatigue
Long term use of amphetamines can result in:
-Insomnia, restlessness
-"Paranoid psychosis"
-Hallucinations
-Violent and aggressive behavior
-Weight loss
-Tremors
Answer:
Amphetamines
Amphetamines are stimulants of the central nervous system and sympathetic division of the peripheral nervous system. It appears that the main action of amphetamines is to increase the synaptic activity of the dopamine and norepinephrine neurotransmitter systems. Amphetamines can:
1)cause the release of dopamine from axon terminals.
2) block dopamine reuptake.
3) inhibit the storage of dopamine in vesicles.
4) inhibit the destruction of dopamine by enzymes.
cocaine
A dose of between 25 to 150 mg of cocaine is taken when it is inhaled. Within a few seconds to a few minutes after it is taken, cocaine can cause:
a feeling of euphoria
excitement
reduced hunger
a feeling of strength
After this "high" which lasts about one hour, users of cocaine may "crash" into a period of depression. This crash causes cocaine users to seek more cocaine to get out of this depression and results in addiction.