Rio Salado Bio 201 Exam 3
What type of cells can generate action potentials? - ✔✔cells with excitable membranes
Where are nodes of Ranvier are found? - ✔✔on myelinated, peripheral neural processes
postsynaptic potential - ✔✔A graded potential that is the result of a neurotransmitter released into the
synapse between two neurons
The two major classes of graded potentials - ✔✔generator potentials and post-synaptic potentials
Reflexes - ✔✔rapid, automatic responses to stimuli
Saltatory conduction - ✔✔the signal jumping from node to node along the axon
facilitated zone - ✔✔Neurons that are far away from the center of the neuron pool and thata re not
easily excited by an incoming stimulus
axosomatic synapse - ✔✔A synapse formed between the axonal ending of one neuron and the cell body
of another neuron
all-or-non phenomenon - ✔✔the action potential either happens completely or it doesn't happen at all
peripheral nervous system (PNS) - ✔✔subdivided into two parts: the sensory or afferent division
(carrying sensory impulses to the CNS), and the motor or efferent division (carrying impulses from the
CNS to muscles and glands)
motor division of the PNS - ✔✔subdivided into two main parts: the somatic nervous system (also known
as the voluntary nervous system because it allows the human body to consciously control its skeletal
muscles), and the autonomic nervous system (also known as the involuntary nervous system because it
regulates activities beyond conscious control such as smooth muscles, cardiac muscles, and glands)
