ross
a _____ called the synapse. The _________of an axon here comes
into close contact with the ______or with the _________of
another neurone. The communication takes place from the
________of the first neurone to the ___________ of the second.

G. The "nerve current" in a reflex therefore runs the following
course: from the sense organ into a ________ axon, along this to
its _________ in a nerve, and across a _________ there into the
_________ of a neurone, and thence {43} out along the _______of
this neurone to the ________or _________ that executes the
reflex. This is a two-neurone _________, but often there is a
third, ________neurone between the _________ and the
_____________.

H. Cooerdination is effected by the ________ of the axons of the
sensory and ________ neurones, by which means the nerve current
is ______ to a team of ________ and so to a team of _________.

2. Is the reaction time experiment, as described in the text, an
introspective or an objective experiment?

3. Mention two cases from common life that belong under the
"simple reaction", two that belong under "choice reaction", and two
that belong under the "associative reaction".

4. Arrange the reflexes mentioned in the text under the two heads
of "protective" and "regulative".

5. Draw diagrams of (a) the neurone, (b) a synapse, (c) a reflex
arc, and (d) a cooerdinated movement. Reduce each drawing to the
simplest possible form, and still retain everything that is
essential.

6. What part of the nervous system lies (a) in the forehead and
top of the head, (b) in the very back of the head, (c) along the
base of the skull, (d) within the backbone, (e) in the arm?

7. Using a watch to take the time, see how long it takes you to
name the letters in a line of print, reading them in reverse order
from the end of the line to the beginning. Compare with this time
the time required to respond to each letter by the letter following
it in the alphabet (saying "n" when you see m, and "t" when you see
s, etc.). Which of these two "stunts" is more like reflex action,
and how, nevertheless, does it differ from true reflex action?

8. The pupillary reflex. Describe the reaction of the pupil of the
eye to light suddenly shining into the eye. This response can best
be observed in another person, but you can observe it in