Depressants Meshael- Maisa - Sara O - Reema
Meshael- Maisa - Sara O - Reema
Tolerance and Addiction
Drug tolerance can lead to addiction.
The dosage needs to increase because the body becomes less responsive to the drug.
The psychological and physiological dependence on a drug
Dopamine normally is removed from a synapse as it is reabsorbed by the neuron that released it. However, certain drugs prevent that reabsorption, which results in an increase of dopamine in the brain.
A person addicted to drugs derives pleasure from increased levels of dopamine and builds up a tolerance to the drug. As a result, the person takes more of the drug.
memory loss,hearing loss ,vision problem ,peripheral nerve damage and death
Mode of action
chemical fumes is inhaled that influence the CNS and act as a depressent on it.
Mode of Action:
1) Affect at least four different neurotransmitters
2) Resulting in a feeling of relaxation and sluggishness.
Use impairs judgment, coordination, and reaction time.
Reduction in brain mass, liver damage, stomach and intestinal ulcers, and high blood pressure.
Cause of fetal alcohol syndrome
Also increases the dopamine
Long terms effects:
Can lead to death
Kidney and level failure
Mode of action:
Increase dopamine levels and prevent it from being absorbed
Results in feeling of pressure and wellbeing
Long term effects:
Distribution in heart rhythm
Mode of action:
As the chemical fumes is absorbed that influence the general impulses in the body and behaves as a depressants.
lower blood pressure, interrupt breathing, and slow the heart rate
Depressants can relieve anxiety, but they also can cause the noticeable effect of sedation.
Drugs that tend to
the central nervous system