Chapter 5 The Nervous System • MHR 165- (a)Use wire to make a model of a neuron.
Complete the circuit using dry cells, a
switch, and a light bulb.
(b)Record your circuit in your notebook. If the
wire is a neuron, what do the other parts of
the circuit represent?
(c)Identify one neuronal disorder. Model this
disorder using your circuit.
19.Find pictures of the brain of a fish, a turtle, and
a bird. Make rough diagrams showing the
major parts of the brain for each organism.
What differences in proportion of the brain
parts do you see among the organisms. Suggest
an explanation for the differences you see.
20.Medication can be used to treat many
disorders, including mood disorders. What is
the impact of mood-disorder medication on
systems in the body other than the nervous
system? Use Internet resources to research a
specific mood disorder. Make a chart to list
the advantages and disadvantages of mood-
disorder therapy.
21.A rarely performed treatment for epilepsy
involves severing of the corpus callosum.
This surgical procedure stops the flow of
information from one side of the brain to the
other. A more common therapy for epilepsy
involves the use of drugs to block certain nerve
impulses. Use diagrams to show how each
method can limit the transmission of
information in the brain.COMMUNICATINGtests to determine if alcohol affects the somatic
system or the autonomic nervous system.17.The motor neuron produces an action potential
or impulse as an all-or-none response to
stimulus. Muscles respond to this impulse,
and contract as an all-or-nothing action. The
presynaptic axon is highly branched at the
neuro-muscular synapse. If some of the
presynaptic branches are damaged, will the
muscle contract? Describe a procedure that
would help you to answer this question.22.Both alcohol and caffeine affect the
neurological system. Although alcohol is a
controlled substance, caffeine is not. Develop
an argument to make caffeine (coffee and other
caffeinated beverages) a controlled substance.
23.Acupuncture and acupressure can be effective
treatments to reduce pain. Traditional
acupuncture involves the use of needles.
Acupressure involves the use of pressure at
specific points on the body. Both acupuncture
and acupressure are not as well accepted as
prescription therapy. Identify points to support
more research into acupuncture and
acupressure therapy. Identify cautions to
further research into each therapy.
24.Some people increase their risk for stroke by
eating a poor diet, smoking, and having little or
no exercise. Develop a plan to educate people
about maintaining a healthy lifestyle. How
might a healthy lifestyle contribute to a healthy
nervous system?
25.Your class has raised $200 to donate to charity
and has narrowed the choice down to
supporting Alzheimer research, Multiple
Sclerosis research, or research into alcoholism.
You and two classmates will debate the merits
of donating the money to each group. After the
debate the class will select which charity to
support. Select one group and prepare for the
class debate.MAKING CONNECTIONS