Nerve cells operate by sending
←
NERVE CELL FUNCTION
impulses ( called action potential) from the cell
electrical
body to nerve terminals This allows
.
body
' '
NEURON CLASSES communication between neurons ,
where the response travels through the .
Afferent from tissues / organs outside of CN5
neurons : to central nervous
system . Cell
body
Interneurons within and its within CN5
: connects neurons the CNS ,
entirely the .
and dendrites CN5
Efferent neurons :
Away from CN5 to effector organs Cell .
body are within the .
MYELINATED NEUROTRANSMITTER Myelin sheath provides insulation to
MICROTUBULE
NERVE CELL NEURO FIBRILS prevent current passing through axon
DENDRITES
DIAGRAM .
synapse aswell as
speeding up the
¥☒¥µ¥É ¥µ",¥µ←
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SYNAPTIC
conduct " potential
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vesicles ' " """ .
AXONAL TERMINAL
B C Receptor _¥¥ÉÉÉ
;*⇐←←←"*;; É¥iÉÉÉ *iÉ •
POLY RIBOSOMES 1
¥÷÷ .IN
-
NUCLEOLUS
. .. . a
GOLGI
"""
NUCLEUS CLEFT
they
gpfd NO0E
RANVIER
OF
←☒o
¥É%¥¥,É→;µ⇐⇐ ÷;¥;L!! ¥;←µ;%¥É¥É A.gl?f:*@iscnwanniem
ON HILLOCK
RIBOSOMES MYELIN SHEATH
" "" "
:
É¥•%←÷÷:¥ É→%→%*¥¥⇐→ ¥←i÷I*qy⇐¥¥ÉÉ
É ⇐-µ!÷É.*←
MEMBRANE
HE
me" " " " "
MITOCHONDRIA
INITIATION OF
;gTB•7_4%¥¥&¥É→%⇐*¥¥¥i AX0N
-
MICROTUBULE
Local lidocaine inhibit
ACTION POTENTIAL SMOOTH ER anaesthetics such as voltage
•
threshold gated sodium channels and
Nerve cells have a
reversibly block nerve
level of depolarisation to
trigger AP impulse generation This prevents the
-
necessary . .
•
Causes sensation of brain
pain from reaching the .
Opening sensitive Nat and Kt channels NEUROTRANSMITTERS
-
of voltage .
Nat enters cell due to electrical gradient secreted
•
+ concentration A chemical substance
.
by
Kt moves out due to cone
grad hampered by grad used
•
but electric neurons to transmit
, .
messages
•
Not enters the channel closes
slowly . then
Kt
grads
•
exit now due to both ,
so potential drops .
?⃝
←
NERVE CELL FUNCTION
impulses ( called action potential) from the cell
electrical
body to nerve terminals This allows
.
body
' '
NEURON CLASSES communication between neurons ,
where the response travels through the .
Afferent from tissues / organs outside of CN5
neurons : to central nervous
system . Cell
body
Interneurons within and its within CN5
: connects neurons the CNS ,
entirely the .
and dendrites CN5
Efferent neurons :
Away from CN5 to effector organs Cell .
body are within the .
MYELINATED NEUROTRANSMITTER Myelin sheath provides insulation to
MICROTUBULE
NERVE CELL NEURO FIBRILS prevent current passing through axon
DENDRITES
DIAGRAM .
synapse aswell as
speeding up the
¥☒¥µ¥É ¥µ",¥µ←
:*:÷÷:; ÷::;÷÷¥÷!:i.ÉIE?:÷!iTorm.:! *
SYNAPTIC
conduct " potential
.ro?:r.i÷÷::;Éi±:!.;÷É:,;?.µ•:É&¥o÷← ;÷."É;%;É.¥!÷ ÷; É%÷
vesicles ' " """ .
AXONAL TERMINAL
B C Receptor _¥¥ÉÉÉ
;*⇐←←←"*;; É¥iÉÉÉ *iÉ •
POLY RIBOSOMES 1
¥÷÷ .IN
-
NUCLEOLUS
. .. . a
GOLGI
"""
NUCLEUS CLEFT
they
gpfd NO0E
RANVIER
OF
←☒o
¥É%¥¥,É→;µ⇐⇐ ÷;¥;L!! ¥;←µ;%¥É¥É A.gl?f:*@iscnwanniem
ON HILLOCK
RIBOSOMES MYELIN SHEATH
" "" "
:
É¥•%←÷÷:¥ É→%→%*¥¥⇐→ ¥←i÷I*qy⇐¥¥ÉÉ
É ⇐-µ!÷É.*←
MEMBRANE
HE
me" " " " "
MITOCHONDRIA
INITIATION OF
;gTB•7_4%¥¥&¥É→%⇐*¥¥¥i AX0N
-
MICROTUBULE
Local lidocaine inhibit
ACTION POTENTIAL SMOOTH ER anaesthetics such as voltage
•
threshold gated sodium channels and
Nerve cells have a
reversibly block nerve
level of depolarisation to
trigger AP impulse generation This prevents the
-
necessary . .
•
Causes sensation of brain
pain from reaching the .
Opening sensitive Nat and Kt channels NEUROTRANSMITTERS
-
of voltage .
Nat enters cell due to electrical gradient secreted
•
+ concentration A chemical substance
.
by
Kt moves out due to cone
grad hampered by grad used
•
but electric neurons to transmit
, .
messages
•
Not enters the channel closes
slowly . then
Kt
grads
•
exit now due to both ,
so potential drops .
?⃝
