Neurons Flashcards
Neurons
Individual nerve cells
Individual nerve cells
Neurons
Three basics task of a Neuron?
-Receive information
-Carry the information
-Pass the information on to the next Neuron
-Receive information
-Carry the information
-Pass the information on to the next Neuron
The 3 basic task of a neuron
Dendrites
-Thin, branching fibers lined with receptors
-Receives information from other neurons in the form of a chemical signal
-Thin, branching fibers lined with receptors
-Receives information from other neurons in the form of a chemical signal
Dendrites
Cell body/soma
-Signal received via the dendrites passes into the cell body
-The soma contains the nucleus and other parts of the cell needed to sustain life.
Axon
-The soma passes the signal to the axon
-The signal triggers an electrical chain reaction that zips down the length of the axon (a long, skinny, wire-like structure)
-The soma passes the signal to this
-The signal triggers an electrical chain reaction that zips down the length of the ? (a long, skinny, wire-like structure)
Axon
Myelin sheath
-An insulating, fatty covering around the axon that this fatty covering contains the elecrical signal and speeds up neural transmissions
-Axons that are covered appear white and are known as white matter.
-An insulating, fatty covering around the axon that this fatty covering contains the elecrical signal and speeds up neural transmissions
-Axons that are covered appear white and are known as white matter.
Myelin Sheath
Nodes of Ranvier
-Regularly spaced gaps in the myelin sheath around an axon or nerve fiber
-This is where depolarization makes place
-Regularly spaced gaps in the myelin sheath around an axon or nerve fiber
-This is where depolarization makes place
Nodes of Ranvier
Terminal Buttons
The branched end of the axon that contains neurotransmitters
The branched end of the axon that contains neurotransmitters
Terminal Buttons
