Nervous System Review 3

Neurotransmitters bind to receptor molecules

Neurotransmitters are inactivated by enzymes

Action potential reaches the synaptic knob

Neurotransmitters move across synaptic cleft

Opening of ion channels in postsynaptic membrane

Intercellular Ca++ concentration triggers movement of neurotransmitter vesicles to the plasma membrane

Nerve fiber that is highly branched; the name comes from the Greek word for tree

Fatty sheath around nerve fibers made by Schwann cells

Distal tips of these nerve fibers end in branches called telodendria

Microscopic gaps in the myelin sheath

Distal ends of these nerve fibers may be called receptors

Contains the nucleus and various organelles for the neuron

Fibers that end in a synaptic knob

Type of rough endoplasmic reticulum containing ribosomes in the cell body

Bundles of intermediate filaments in the neuron