Download The Nervous System

Warm-Up (12/10)
On the piece of white paper from the back, answer
the following question.
Explain how proteins are
secreted (released) by cells.
Name
Date
Period
Communication within a Neuron (nerve cell)
Neurons communicate
using electricity.
Communication within a Neuron (nerve cell)
Dendrites receive
signals from other
neurons.
Communication within a Neuron (nerve cell)
Action potentials (electrical
currents) flow through the axon.
Communication within a Neuron (nerve cell)
The myelin sheath insulates
the action potentials.
Communication within a Neuron (nerve cell)
Schwann
cells secrete
the myelin to
create the
sheath.
Communication between Neurons
Neurons communicate
with other neurons at
the synapse.
Communication between Neurons
Neurotransmitters
(ligands) are released
at the synapse.
Synapse
Na+/K+ pump
neurotransmitters
Post-synaptic dendrite
Communication between Neurons
Ions pumped in and
out stimulate
electricity.
K+
Na+/K+ pump
Na+
Communication between Neurons
stimulatory
The response can be
stimulatory or
inhibitory.
inhibitory
Communication between Neurons
All together,
neurons
make up a
neural
network.
Critical Thinking Question #1
Discuss this question with your partner and write or
represent it. I will call on three people to share their
partners’ answers.
Describe how the nervous system detects
signals and transmits information.
Communication between Neurons
Mapping the
connections
in the brain?
Communication between Neurons
Different
parts of the
brain deal
with different
functions.
Vertebrate =
anything with
a spinal cord
Critical Thinking Question #2
Discuss this question with your partner and write or
represent it. I will call on three people to share their
partners’ answers.
Describe how the vertebrate brain
integrates information (brings information
together) to produce a response.
Closure
On the piece of white paper from the
back, answer the following question:
How does a neuron receiving
neurotransmitters across a
synapse produce an action
potential?
Name
Date
Period
Scale
1 – 10