Question

QUESTION 9 Long-term use of stimulants can lead to A. an increase in body weight B. stimulant psychosis C. sensitization to the euphoric effects D. all of the above QUESTION 10 the presynaptic terminal Amphetamine produces its effects mainly by _ A. blocking the reuptake: dopamine into B. decreasing the release: serotonin from Cincreasing the release: GABA from Dincreasing the release: dopamine from

Answer 1

question 9.

long term use of stimulants can lead to B) stimulant psychosis.

as weight loss occurs in long term use of stimulant and sensitization to euphoric effect is short term effect of stimulant.long term use of stimulants leads to loss of memory and concentration.

question 10

amphetamine produces its effect mainly by d) increasing the release of dopamine from the presynaptic terminal.

high dose amphetamines can cause paranoid, delusional psychotic state and hallucinations. it also increases the release of norepinephrine and serotonin mainly in the synaptic cleft of the nucleus accumbens.

question 11

nicotine produces its effect by c) stimulating nicotine acetylcholine receptors.

nicotine acetylcholine receptor density increases by exposure of nicotine but they do not stimulate the muscarinic acetylcholine receptors but bind to nicotinic receptors only.

question 12

cocaine produces its effect predominantly by b) increasing the release of dopamine in the synaptic cleft.

here dopamine act as chemical messengers carrying a signal from neuron to neuron from synaptic cleft. cocaine mainly bind to dopamine receptors.