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acetylcholine 音標拼音: [əs
,
ɛtəlk'olin] [əs
,
itəlk'olin]
XDict
n
. 醋膽素
PyDict
醋膽素
WordNet
(
r
)
3
.
0
(
2006
) (
WordNet
)
acetylcholine
n
1
:
a
neurotransmitter
that
is
a
derivative
of
choline
;
released
at
the
ends
of
nerve
fibers
in
the
somatic
and
parasympathetic
nervous
systems
The
Collaborative
International
Dictionary
of
English
v
.
0
.
48
(
gcide
)
acetylcholine
\
acetylcholine
\
n
.
1
.
a
neurotransmitter
released
by
the
transmitting
dendron
at
autononmous
synapses
and
at
neuromuscular
junctions
.
It
is
a
quaternary
amine
with
an
obligatory
negative
counterion
.
The
nominal
formula
for
the
hydroxide
form
is
{
C7H17NO3
}.
Structural
formula
{(
CH3
)
3N
()
CH2CH2
.
O
.
CO
.
CH3
.
OH
(-)}.
Note
:
Acetylcholine
is
the
first
recognized
and
best
-
studied
of
the
neurotransmitters
.
At
receptors
it
is
recycled
into
choline
by
the
action
of
acetylcholinesterase
.
Acetylcholinesterase
inhibitors
therefore
function
as
nerve
poisons
.
For
biochemical
studies
it
is
prepared
typically
in
the
chloride
or
bromide
forms
.
[
WordNet
1
.
5
PJC
]
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