Neurons Flashcards
Neurons consist of __________
Dendrites
What are dendrites connected to?
Cell body and an axon
Many nerves are surrounded by ____________
Myelin sheeths
What relieves signals from other neurons or sensory receptors?
Dendrites
Impulses are passed to the _________ and along the _______
Cell body
Axon
What do impulses reach?
Terminal buttons
Impulses stimulate _______ to be released from _______
Neurotransmitters
Vesicles
What are neurotransmitters released into?
Synapse
The adjacent neuron must quickly take up the ________ from their ________
Neurotransmitters
Receptors
Electrical impulses travel down the ________ onto the next neuron
Dendrites
Excitatory potentials
have a positive charge and make it more likely the post synaptic neuron will fire eg. noradrenaline
inhibitory potentials
have a negative charge and make it less likely the post synaptic neuron will fire eg. serotonin
sensory neurons
carry impulses from sensory receptors
converted to sensation
some terminate at the spinal cord and produce reflexes