There
are
many
____________________
types
of
sensory
receptors
.
Free
____________________
____________________
are
the
____________________
and
most
____________________
.
They
are
the
terminal
ends
of
dendrites
.
They
are
found
in
most
of
the
____________________
.
These
are
responsible
for
the
sensation
of
____________________
,
____________________
,
itch
,
____________________
,
and
crude
touch
.
The
____________________
of
action
potential
formation
is
not
know
.
