Term
| Five cells that play a key role in nervous tissue. |
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Definition
Neurons
Microglia
Schwann Cells
Astrocytes
Oligodendrocytes |
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Definition
| Receive stimuli and transmit action potentials. |
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Term
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Definition
Multipolar
Bipolar
Unipolar |
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Definition
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Definition
Lots of dendrites and 1 axon.
Typically motor and association neurons. |
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Term
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Definition
One dendrite and one axon.
Typically found in sensory organs. |
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Definition
No dendrites, one axon.
Most common type of sensory neuron. |
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Term
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Definition
| Short projections of neurons that receive information. |
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Term
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Definition
| Long projections on a neuron that pass information away from the cell body. |
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Definition
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Definition
Mobile neuroglia that act as vaccuum cleaners of the nervous system.
Phagocytes of the CNS. |
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Term
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Definition
| Form the myelin sheath around the axons in the Central Nervous System. |
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Term
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Definition
| Form the myelin sheaths around the axons of the Periferal Nervous System. |
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Term
| Allow saltatory conduction to occur. |
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Definition
| Oligodendrocytes and Schwann Cells |
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Term
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Definition
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Term
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Definition
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Term
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Definition
Brain and spinal cord.
Processes, integrates, stores and responds to information from the PNS. |
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Term
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Definition
Everything outside CNS, nerves and ganglia.
Detects stimuli and transmits information to/from the CNS. |
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Term
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Definition
| Transmits action potentials from sensory organs to the CNS. |
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Term
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Definition
| Transmits action potential from CNS to effector organs. |
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Term
| Two divisions of the Motor PNS |
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Definition
Somatic nervous system
Autonomic nervous system (ANS) |
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Term
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Definition
| Transmits action potential from the CNS to the skeletal muscles. |
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Term
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Definition
| Transmits action potentials from the CNS to smooth muscle, cardiac muscle and certain glands. |
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Term
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Definition
Sympathetic
Parasympathetic |
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Term
| Sympathetic nervous system |
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Definition
Prepares the body for action.
"Fight or Flight" |
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Term
| Parasympathetic nervous system |
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Definition
| Regulates vegetative functions, such as digestion and urination. |
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Term
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Definition
Myelinated axons that functions to propagate action potentials. Forms nerve tracts within CNS and nerves within PNS.
"Deep in Brain, Periferal in Spinal Cord" |
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Term
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Definition
Neuronal cell bodies and unmyelinated axons that integrate the nervous system.
Forms the cortex and neuclei of the CNS and the ganglia in the PNS.
"Peripheral in brain, deep in spinal cord" |
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Definition
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Definition
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Definition
| Junction between two cells where action potential in one cell causes action potential in another cell. |
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Term
| Two types of cells in synapse |
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Definition
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Term
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Definition
| End of the axon in the presynaptic cell. |
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Term
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Definition
| Membrane of the postsynaptic cell. |
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Term
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Definition
| Space between presynaptic terminal and postsynaptic membrane. |
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Term
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Definition
| Hyperpolarization of the post synaptic membrane. |
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Term
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Definition
| Depolarization of the post synaptic membranes. |
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Term
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Definition
| The combined action of more than 1 neurotransmitter that triggers the action potential of another neurotransmitter. |
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Term
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Definition
| Many neurons coming down to one or a few. |
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Term
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Definition
| One or a few neurons going to many neurons. |
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Term
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Definition
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Stimulation occurs
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Afferent action potential is generated
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Association within the CNS occurs
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Efferent action potential is generated thru motor neurons.
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A response is generated through the effector organ.
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Term
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Definition
| Chemicals that are released by a presynaptic cell and results in a reaction in the post synaptic cell. |
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Term
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Definition
| Substances that influence the sensitivity of post synaptic cells to neurotransmitters. |
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Term
| Direction of Action Potential |
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Definition
| Axon terminals → Dendrites |
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Term
| 11 important Neurotransmitters |
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Definition
Acetylcholine
Nitric Oxide
Norepinephrine
Endorphin
Dopamine
Substance P
Enkaphalins
GABA
Glycine
Glutamate
Histamine |
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Term
Acetylcholine
-Location
-Action |
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Definition
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Term
Norepinephrine
-Location
-Action |
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Definition
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Term
Nitric Oxide
-Location
-Action |
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Definition
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Term
Dopamine
-Location
-Action |
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Definition
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Term
Substance P
-Location
-Action |
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Definition
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Term
Endorphin
-Location
-Action |
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Definition
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Term
Enkaphalins
-Location
-Action |
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Definition
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Term
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Definition
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Term
Glycine
-Location
-Action |
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Definition
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Term
Glutamate
-Location
-Action |
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Definition
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Term
Histamine
-Location
-Action |
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Definition
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