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11 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Nerve cell types |
Neurons & Neuroglia |
2 Types
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Types of neurons |
Afferent/Sensory - receive info from PNS, transmit to CNS
Interneurons- connect neurons to other neurons
Efferent/ Somatic/ Motor- transmit info to extremities, making muscles move |
3 types |
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Types of Neuroglia |
Astrocytes- provide vascular links to neurons and maintain capillaries
Oligodendrocytes- wrap myelin sheaths around axons in white matter and produce satellite cells in grey matter for ion exchange
Microglia/ phagocytes- eat pathogens and assist in repair after injury |
3 Types |
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Neuroglia |
Noneuronal support cells of neurons |
Non neural |
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Neuron structures |
Dendrite- receive info. From other neurons and transmit to cell body to be processed
Cell body/ Soma- repairs cells & transmit electrochemical impulses
Axon- sends the message to target cells ie: muscle, glands, other neurons |
3 Types |
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Synapses |
Connections between neurons ie: interneural communication |
Interneural |
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Synapses cleft |
Is the intercellular space btween axon terminal and postsynaptic target cell |
Space between |
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Neurotransmitters |
Chemicals transported from cell body & stored in axon terminal. Activation/ depolarization of neuron causes action potential that releases a neurotransmitter into the synaptic cleft that binds to a neuroreceptor causing a change in activity |
Chemical signals |
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Types of neurotransmitters |
Acetylcholine- convey info in PNS, used by all neurons to synapse with skeletal muscle Regulates HR& other autonomic function Glutamate-excitatory transmits facilitates neural change during development |
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White matter |
High amount of myelin: Axions that carry info from cell bodies, found in brain and spinal cord |
Made of fat |
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Grey Matter |
Lg.# of nerve cell bodies and dendrites. Covers entire surface of the cerebrum and is called the cerebral cortex |
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