PSYO 1011 Lecture Notes - Lecture 7: Ruth Riley, Adrenal Gland, Neurotransmitter

• School: Dalhousie University
• Department: Psychology
• Course: PSYO 1011
• Professor: Leanne Stevens,Shelley Adamo,Kevin Duffy,Jennifer Stamp

Document Summary

Lsd: activates some types of serotonin receptors. Amphetamines: reuptake of dopamine and other neurotransmitter. Many drugs influence more than one neurotransmitter system. Small molecule: can get through the cell membrane and affects it, can bind with different receptors, reduce the firing of action potential, can kill neurons in high concentrations. Hormones: chemical messengers secreted into the circulation, they are secreted by endocrine glands, testis, ovaries, adrenal glands. In humans: testosterone does not reliably correlate with aggression. Increased levels of testosterone in either men or women do not result in an increase in over aggression: conclusion: testosterone has different effects in humans and rats. In humans, testosterone levels do not trigger aggression. Immune cells release compounds (cytokines) that bind to receptors on neurons. Sickness behaviour: cytokines induce changes in behaviour, e. g. Sleepiness, loss of appetite, irritability: all these things help you get better (suspected) Major divisions of the nervous system: central nervous system (cns, brain and spinal.