Chapter 6/ Neuronal Signaling and the Structure of the Nervous System Flashcards
CNS
Central Nervous System
PNS
Peripheral nervous system
BLANK are the basic cell type in both division
-Generate electrical signals
Neurons
Do not generate signals, play important
supportive functions for neurons
Glial cells
Dendrites
Structure of a Neuron
Cell Body
Structure of a Neuron
Axon (Nerve Fiber)
Structure of a Neuron
Receive incoming
information
Dendrites
-contains nucleus
-integrates incoming info
cell body
Carry outgoing signals to
target cell
Axon (Nerve Fiber)
In CNS – Oligodendrocytes
In PNS – Schwann cells
Myelin Sheaths
Many axons are myelinated
– 20-200 layers of modified plasma membrane
Myelin Sheaths
Oligodendrocytes
Central Nervous System
Schwann cells
Peripheral Nervous System
Speed up conduction of
electrical signals along
the axon.
Saltatory conduction
Myelin Sheaths
