Download Nervous System Class Overview Questions

Building the Model
Neurons or parts of
neurons
Ions
dendrite
axon
cell body
synaptic vesicles
presynaptic neuron
postsynaptic
neuron
K+
Na+
negative organic
ions
Ca++
Gates
voltage-gated ion
channels
Na+ gates or
channels
K+ gates or
channels
Questions to Answer
1. How is this potential difference across the
cell membrane generated?
2. What characteristics of membranes allow
cells to concentrate or exclude ions?
3. What is it about neurons (nerve cells) that
make their properties different from those of
other cells? In other words, what enables
nerve cells to produce action potentials?
4. How is the an AP started and propagated?
5. Explain how the transmission of information
between neurons occurs across synapses
6. Transmission across synapses involves
chemical messengers called neurotransmitters.
Explain the role of the following
neurotransmitters:
a. Acetylcholine
d. dopamine
b. Epinephrine
e. Serotonin
c. Norepinephrine f. GABA
7. Explain how the response can be stimulatory
or inhibitory.
8. Different regions of the vertebrate brain have
different functions:
a.
b.
c.
d.
e.
f.
Vision
Hearing
Muscle Movement
Abstract thought and emotions
Neuro-hormone production
Forebrain (cerebrum), midbrain (brainstem), and
hindbrain (cerebellum)
g. Right and Left cerebral hemispheres in humans