30.
If it carries information from the periphery to the CNS, it is an
t
(
) neuron. If it carries information from the CNS to a muscle or gland, it is an
t(
) neuron.
31. An automatic reaction to a stimulus is referred to as a
.
The pathway from the receptor organ to the reacting muscle is called the
.
32. The pathway of a general reflex arc involves a minimum of
structures.
The stimulus is received by a
organ. That information is transmitted to the
CNS by the
t(
) neuron. Within the spinal cord, there is a special
neuron connecting the afferent neuron to the efferent neuron; this special connecting
neuron is called the
. Carrying the appropriate command from the spinal
cord to the reacting muscle is the
t(
) neuron. The reacting muscle
is called the e
organ.
33. The autonomic nervous system is that portion of the nervous system
generally concerned with commands for s
muscle, c
muscles,
and
s.
34. In the ANS, the number of neurons connecting the CNS with a visceral organ
is always
. The cell bodies of the second neuron form a collection outside the
CNS, called a
. The first neuron extends from the CNS to the ganglion
and is therefore called the
neuron. Cell bodies of the second neurons
make up the
. The second neuron's processes extend from the ganglion to the
. Thus, the second neuron is called the
neuron.
35. The efferent pathways of the ANS fall into two major divisions. The one most
active during a "fight-or-flight" reaction is the
-
outflow (
nervous
system). The other is the
-
outflow (
nervous system).
36. The intermediolateral gray columns from the T-1 to the L-2 levels of the
spinal cord are made up of the cell bodies of the
-ganglionic sympathetic neurons.
The sympathetic ganglia are made up of the cell bodies of the
-ganglionic
sympathetic neurons. The sympathetic NS activates those visceral organs needed to
. It deactivates those which are
.
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