Projection that picks up impulses from other neurons
Nerve fiber projecting from the cell body that carries nerve impulses.
Connects cell body of a neuron to the axon.
Releases neurotransmitters into the synaptic cleft
Fatty coat that insulates the axons of some nerve cells, speeding transmission of impulses.
Separation of circulating blood and the brain extracellular fluid in the CNS.
Receptor Binding - lock & key (NT to receptor, chemical)
Hormone or neurotransmitter affects target cells by binding to specific receptor molecules, which are often located in the cell membrane.
The nervous system's ability to change
Neurogenesis, Synaptogenesis, Pruning
Creation of new neurons in the adult brain; creation of new synapsi; killing off of unnecessary neurons.
Action Potential - all stages (resting potential, depolarization, hyperpolarization, threshold, refractoryperiod, how sodium and potassium are involved)
Resting: no activity; depolarization: change in cell membrane's potential; hyperpolarization: makes cell membrane more negative; threshold: when the electrical charge inside the neuron reaches a high enough level relative to the outside.
Synapse and Synaptic Cleft
Terminal point of axon branch which releases neurotransmitters; a gap into which neurotransmitters are released from the axon terminal