neurons
Post on 13-Jan-2017
63 Views
Preview:
TRANSCRIPT
Today’s TopicNeurons
BumpyBulbousBranched
DENDRITES
Stubby
Mushroom
Thin
3 Common Dendritic Spines
Soma
Lots of sodium outside
+ -
Lots of potassium inside
At Rest
1+ charge each
as each gate opens the next is triggered
as each gate opens the next is triggered
neurotransmitteris released
Neurotransmitter binds to receptorCauses some sodium channels to open
++Ligand-gated channel opensNT+
-++
Sodium ions enter
Cell is more positive
Soma-
NT- 55
Voltage-gated channels open as cell voltage reaches threshold
Voltage-gated channels open as cell voltage reaches threshold
Dr. Ken Tangen
www.BiologicalPsych.com
top related