Name __________________
Day____________________
1. What is the long, thin, middle part of a nerve cell
called? _________________
2. Nerve cells vary the intensity of a sensation by
varying the strength of their firing, not by changing the frequency rate of
their firing.
___ True
___ False
3. The gap between nerve cells is bridged through
chemical means, not by electrical means.
___ True
___ False
4. Why do caffeine and nicotine make humans feel more
awake and alert?
5. Some drugs and poisons work by preventing the
neurotransmitter chemicals from working correctly.
___ True
___ False
6. What is the name of the light-sensitive layer within
our eyes? _____________________
7. Which light receptor cells in our eyes allow us to see
color?
___ trapezoids
___ cones
___ rods
___ interceptors
___ none of these
8. The cochlea is the structure in our ear where sound is
actually detected.
___ True
___ False
9. What function do the semicircular canals perform
within our ears?
10. What are the four main flavors that we can tastes
with our tongue?
11. What is the taste that the Chinese count as a major
flavor that American scientists generally do not?
12. Numerous chemical compounds can be detected by our
tongue as being sweet.
___ True
___ False