2.  Introduction to the nervous system
 Central vs. peripheral nervous system
▪ Autonomic vs. somatic nervous system
 Components of the nervous system
 Glia
 Neuron
▪ Parts of a neuron
 Action potential

4. CENTRAL NERVOUS
SYSTEM
PERIPHERAL NERVOUS
SYSTEM

6.  The Autonomic Nervous System (ANS) can
be divided into:
 Sympathetic Nervous System
 “Fight or Flight”
 Parasympathetic Nervous System
 “Rest and Digest”

7. NEURON GLIA

14.  Basic building blocks of
the brain
 Parts of the Neuron
 Dendrites
 Soma (Cell Body)
 Axon
 Axon Terminal

16.  What do
dendrites
respond to?
 How do
dendrites
respond?

17.  Contains the
nucleus of the
neuron
 Receives
information from
dendrites

18.  Conducts information
 Can vary in length
 Afferent vs. efferent axon
 Myelin Sheath
 Nodes of Ranvier

23.  Where
information is
released
 Termination of
the action
potential which
may lead to the
release of a
neurotransmitter

24.  After the electrical
impulse reaches the
axon terminal, this
information may be
passed onto the
next neuron.
 Neurons contain 2
types of receptors
 Excitatory
 Inhibitory

25.  A nerve impulse is the electrical message
that is transmitted down the axon of a
neuron.
 Conducting an electrical impulse or action
potential means conducting information
within a neuron.

26.  Resting Membrane Potential (-70mV)
 K+, Na+, Ca2+, Cl-
 Inside vs. outside of the membrane
 Selective Permeability
 Electrical Gradient vs. Chemical Gradient

28.  Voltage-gated vs. Ligand-gated Ion Channels
 The all-or-none law states that the amplitude
and velocity of an action potential are
independent of the intensity of the stimulus
that initiated it.
 Action potentials are equal in intensity and speed
within a given neuron.