multipolar neuron (pre and post synaptic) Flashcards
Diagram vocab definitions and purpose
axon
long threadlike part of a nerve cell, nerve impulses carried from cell body to other cells
Nissl bodies
granules are of rough endoplasmic reticulum (RER) with rosettes of free ribosomes
dendritic branches
create new synapses
neurofibrils
Neurofibrils include neurofilaments and neurotubules, microtubules that play a role in the transport of proteins and other substances within the cytoplasm.
axon hillock
last site in the soma where membrane potentials propagated from synaptic inputs are summated before being transmitted to the axon.
initial segment of axon
specialized membrane region in the axon of neurons where action potentials are initiated.
mitochondrion
respiration and energy production occur.
dendrite
impulses received from other cells at synapses are transmitted to the cell body.
axon terminal
very end of a branch of a nerve’s axon, a long slender nerve fiber that conducts electrical signals to a nerve synapse (the gap between nerve cells). The signal then moves across the synapse to another axon by means of a neurotransmitter (an electrochemical substance
telodendria
An axon can divide into many branches called telodendria (Greek–end of tree). At the end of each telodendron is an axon terminal