Neuron anatomy Flashcards
neurons
nervous system is comprised of specialized cells
Cell body
main part of the neuron that contains the nucleus of the nerve cell. Also called the soma, other organelles are also found in the cell body
Dendrites
These are appendages attached to the cell body that receive signals from other neurons
Axon
This is the long structure attached to the cell body. It conducts and transmits information to other cells. Branches at the end of the axon form axon terminals. These branches facilitate communication between neurons and target cells
Neurological cells CNS
Astrocytes, oligodendrocytes, microglial cell, and ependymal cells
Neurological cells PNS
Schwann and satellite cells
Neurological cells
provide support & protection to neurons
myelin sheath
protein and lipid structure produced by a type of glial cell called a Schwann cell
heath functions like a blanket that provides a layer of insulation around the axon of a neuron, increasing the speed of electrical signal transmission
nodes of Ranvier
found between the myleinated sheaths
Electric signals jump from one node to the next, thereby increasing the speed of signal transmission