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Summary: Neurons & Synapses

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L1 Types and classification of neurons in the NS

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Which stain is used to distinguish the grey and white matter in the brain? And what does is stain?

Nissl stain
Stains neuron cell bodies/soma
Why is it difficult to classify neurons in the NS ?

You need to define a parameter space in order to do the classification. The definition of the parameters space is subjective.
How does an axon make contact

The boutons/synaptic terminals of axons make contact the dendrites of postynaptic neurons.
............. is formed by neuronal structures that are distributed across different regions of the brain but work together to perform a given function.

System
Are spines dendritic or axons extensions?

Dendritic
In a typical neuron the largest density of synapses are made onto the ..........Axon/stoma or dendrite?

Dendrite
Who originally visualised and described the Axo-dendritic projections ?

Ramon y Cajal
How do Inhibitory neurons work?

They secrete neurotransmitters that cause membrane hyperpolarization in postsynaptic neurons.
What does Dale's law (1934) state?

A neuron is either excitatory or inhibitory in its influence on other neurons

A neuron secretes a single (traditional) neurotransmitter at its synapses
Name a few modern techniques allow detailed anatomical characterisation of neurons.

For example,
Molecular labeling in whole brain provide biochemical insight to neuronal diversity.