Neuron Anatomy Flashcards
Nissl Bodies
Rough ER (Rough Endoplasmic Reticulum)
neuroplasm
Neuron Cytoplasm
Cell Body
a.k.a. Soma
cell body contains the nucleus
Nucleus
Contains information for protein synthesis
Dendrites
receive stimuli and conducts potential toward the cell body
Axon
conducts action potential away from the cell body
Axon Hillock
area of origin of the axon from the nerve cell body
myelin sheath
surrounds and insulates axons
speeds up axon’s message
Schwann Cells
Myelin producer for the PNS
forms a portion of myelin sheath on ONLY ONE AXON
nodes of Ranvier
Gaps of Myelin
presynaptic terminals
enlarged axon terminals that message leaves to go to next neuron
Efferent (Motor) Neuron
conduct action potential away from cell body
Afferent (Sensory) Neuron
Conducts potentials toward the cell body
Association (inter-) neuron
conducts potentials from one neuron to the next neuron inside the CNS
Only in the CNS