PSYB65H3 Chapter Notes - Chapter 5: Sensory Neuron, Reuptake, Second Messenger System
Document Summary
Chapter 5 how do neurons use electrochemical signals to. Acetlycholine (ach) first neurotransmitter to be discovered in the. Pns and cns, activates skeletal muscles in the somatic nervous system and may either excite or inhibit internal organs in the autonomic system. Epinephrine (ep or adrenaline) chemical messenger that acts as a hormone to mobilize the body for fight or flight during times of stress and as a neurotransmitter in the cns. Norepinephrine (ne or noradrenaline) neurotransmitter found in the brain and in the sympathetic division of the autonomic nervous system, accelerates heart rate in mammals. Neurotransmitter chemical released by a neuron onto a target with an excitatory or inhibitory effect. In parkinson"s patients their substantia nigra is degenerated. Dopamine is less than 10% of normal in the basal ganglia. Parkinson"s disease disorder of the motor system correlated with a loss of dopamine in the brain and characterized by tremors, muscular rigidity, and reduction in voluntary movement.
