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QUESTION 6 Which of the following is not considered to be a stimulant? A morphine B. cocaine C. nicotine D. caffeine QUESTION 7 The euphoria caused by some addictive drugs is thought to be due to: O reduction of cortical inhibition of lower brain structures direction stimulation of brain structures at levels below the cortex increases in the activity of serotonin neurons in the reticular formation all of the above

Answer 1

Q4. Large doses of nicotine can cause

Answer. All of the above

Justification : High doses of nicotine causes stimulatory effects which include nausea and vomiting, excessive salivation, abdominal pain, pallor, sweating, hypertension, tachycardia, ataxia, tremor, headache, dizziness, muscle fasciculations, and seizures

Question 5. Cocaine is

Answer a substance extracted from coca plant

Justification : Cocaine is a powerfully addictive stimulant drug made from the leaves of the coca plant native to South America.

Question 6. Which of the following is not considered to be a stimulant

Answer 6. Morphine

Justification : morphine is considered as a narcotic.

Question 7. The euphoria caused by addictive drugs is thought to be due to

Answer. Direction stimulation of brain structures at levels Below the cortex

Justification : Addictive drugs stimulate the levels of dopamine. High dopamine levels influence various regions of the brain, including the ventral tegmental area which uses the neurotransmitter dopamine, and the nucleus accumbens resulting in experience of euphoria