119 cards
____ are highly specialized cells responsible for the conduction of impulses.
Neurons are highly specialized cells responsible for ____.
Neurons communicate using both ____ forms of communication.
Electrical neuron communication occurs via ____.
____ neuron communication occurs via ion exchange and the generation of membrane potentials down the length of the axon.
Chemical neuron communication occurs via ____.
____ neuron communication occurs via neurotransmitter release from the presynaptic cell and the binding of these neurotransmitters to the p…
____ are appendages of neurons that receive signals from other cells.
Dendrites are appendages of neurons that ____
The ____ is the location of the neuron's nucleus as well as other organelles.
The cell body or soma is the location of the neuron's ____.
The ____ of a neuron is where the cell body transitions to the axon.
The axon hillock of a neuron is where ____
The actions potentials are initiated at ____
The ____ of a neuron is a long appendage down which an action potential travels.
The ____ of a neuron is the end of the axon from which neurotransmitters are released.
The nerve terminal or synaptic bouton of a neuron is ____
____ of neurons are exposed areas of myelinated axons.
Nodes of Ranvier of neurons are ____
Nodes of Ranvier of neurons permit ____ conduction.
____ of neurons permit saltatory conduction.
The synapse consists of the ____.
____ of a neuron is an insulating substance that prevents signal loss.
Myelin is created by ____ in the central nervous system.
Myelin is created by oligodendrocytes in the ____ nervous system.
____ is created by oligodendrocytes in the central nervous system.
Myelin is created by ____ in the peripheral nervous system.
Myelin is created by Schwann cells in the ____ nervous system.
____ is created by Schwann cells in the peripheral nervous system.
Myelin prevents dissipation of ____.
____ are a bundle of axons in the central nervous system.
Tracts are a bundle of axons in the ____ nervous system.
Nerves are a bundle of axons in the ____ nervous system.
____ are a bundle of axons in the peripheral nervous system.
A single nerve may carry ____
Tracts may carry ____
Cell bodies of neurons of the same type within a nerve cluster together in ____ in the peripheral nervous system.
Cell bodies of neurons of the same type within a nerve cluster together in ganglia in the ____ nervous system.
Cell bodies of the individual neurons within a tract cluster together in ____ in the central nervous system.
Cell bodies of the individual neurons within a tract cluster together in nuclei in the ____ nervous system.
____ are other cells within the nervous system in addition to neurons.
____ nourish neurons and form the blood–brain barrier.
Astrocytes ____
____ line the ventricles of the brain and produce cerebrospinal fluid.
Ependymal cells line the ____.
____ are phagocytic cells that ingest and break down waste products and pathogens in the central nervous system.
Microglia ____
____ are glial cells that cover the surface of nerve cell bodies in PNS.
Satellite glial cells ____
Glial cells found in the peripheral nervous system are ____.
Glial cells found in the ____ nervous system are satellite cells and schwann cells.
Glial cells found in the central nervous system are ____.
Glial cells found in the ____ nervous system are oligodendrocytes, astrocytes, microglia, and ependymal cells.
All neurons exhibit a ____ of approximately –70 mV.
All neurons exhibit a resting membrane potential of approximately ____ mV.
Resting potential is maintained using ____.
The Na + /K + ATPase pumps ____ potassium ions pumped in.
The Na + /K + ATPase pumps three ____ ions pumped in.
Excitatory signals cause ____ of the neuron.
____ signals cause depolarization of the neuron.