PSYC62H3 Lecture 2: Neurotransmission and Neurotransmitter Systems
PSYC62
LECTURE 2
Neuroanatomy
Types of Neurons
• Interneurons
• Sensory neurons
o Afferent neurons
• Motor neurons
o Efferent neurons
Glial Cells
• not as understood as neural cells
o role of modulating functionality of neurons
o different type of glial cells : oligodendrocytes and Schwaan cells
o eli sheath → improves conduction of action potential; insulating signal from other
"wires'
• blood brain barrier
o "bouncers" in epithelial lumen create tight junctions
o limited substances cross over
o keep NS segregated and clean
• Microglial
o waste management
o clean up the mess left over from the function of NS
o analogous to the immune system
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find more resources at oneclass.com
PSYC62
LECTURE 2
• Sympathetic outflow
o Norepinephrine is the NT
• Parasympathetic outflow
o Acetylcholine is the NT
Midsagittal Structures
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find more resources at oneclass.com
PSYC62
LECTURE 2
• Know the reward pathway system
• role in hypopituitary axis
• hormone release
• purpose to release chemicals that it develops within its own cellular architecture
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find more resources at oneclass.com
Document Summary
Sensory neurons: afferent neurons, motor neurons, efferent neurons. Glial cells: not as understood as neural cells role of modulating functionality of neurons, different type of glial cells : oligodendrocytes and schwaan cells, (cid:373)(cid:455)eli(cid:374) sheath improves conduction of action potential; insulating signal from other. bouncers in epithelial lumen create tight junctions limited substances cross over: keep ns segregated and clean, microglial, waste management, clean up the mess left over from the function of ns, analogous to the immune system. Sympathetic outflow: norepinephrine is the nt, parasympathetic outflow, acetylcholine is the nt. Lecture 2: know the reward pathway system role in hypopituitary axis, hormone release, purpose to release chemicals that it develops within its own cellular architecture. Lecture 2 important components: amygdala, hippocampus, mammillary bodies, other subcortical circuits that link to reward system, emotional regulation is tightly tied to reward system. Signal propagation: the synapse allows for info to be modulated: communicate different messages.
