Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
48 Cards in this Set
- Front
- Back
|
CNS
|
Brain & Spinal Cord
|
|
|
PSN
|
Nerves
|
|
|
CSN Glial Cells
|
ependymal cells
Astrocytes Microglia Oligodendrocytes |
|
|
PNS Glial Cells
|
Schwann Cells
Satelite Cells |
|
|
Efferent Neurons
|
Motor
|
|
|
Afferent Neurons
|
Sensory
|
|
|
Anterograde
|
cell body to axon terminal
|
|
|
Retrograde
|
axon terminal to cell body
|
|
|
Nodes Of Ranvier
|
section of unmyelinated axon membrane between 2 schwann cells
|
|
|
Nernst Equation
|
describes the membrane potential that would result if the membrane were permeable to only one ion
|
|
|
Nernst Equation
|
61/Z (LOG) [ion] out/ [ion] in
|
|
|
Goldman-hodgkin Equation
|
calculates the membrane potential that results if all ions that can cross the membrane
|
|
|
Goldman-hodgkin Equation
|
Vm = 61 log x Pk[k+]out + PNa[Na+]out + PCl-[Cl-]in/ Pk[k+]in + PNa[Na+]in + PCl[Cl-]out]
|
|
|
Potassium
|
the only permeable ion
|
|
|
2 Gates
|
Sodium-Voltage Gated Channels
|
|
|
Sodium Activation Gate
|
M3
|
|
|
Sodium InActivation Gate
|
H
|
|
|
Potassium Voltage Gate
|
N4
|
|
|
At rest
|
M3-closed
H-open N4- closed Leaky K Gates: open |
|
|
Upstroke
|
M3- open
H-open N4- closed |
|
|
Peak
|
M3-open
H-closed N4- begin to open |
|
|
De-Stroke
|
M3-open
H- closed N4- open |
|
|
Undershoot
|
M3
H N4 ALL CLOSED |
|
|
Absolute Refractory
|
the point where the channels are all closed
|
|
|
2 things that cause a fast AP
|
Myelin: changes in voltage
Diameter: surface area |
|
|
7 classes of Ligands (neurotransmitters)
|
Acetylcholine
Amines Amino Acids Peptides Purines gases lipids |
|
|
Acetylcholine
|
-Synapse with Muscles
-Long termed memory storage |
|
|
Amines
|
-sleep/wake
-short term memory storage -stress |
|
|
amino acids
|
-easily pass through blood brain barrier
-proteins |
|
|
peptides
|
the natural high
addictive |
|
|
gases
|
nitric oxide
getting neurotransmitter to block memory |
|
|
lipids
|
blood brain barriers
|
|
|
2 ach is enough to activate.......
|
1 receptor
|
|
|
Amines what are the 4
|
Histamines
serotonin dopamine (DA) norepinephrine |
|
|
Dopamine (DA) (Amines)
|
supreses unwanted behavior
|
|
|
Norepinephrine (NE) (Amines)
|
short term memory
|
|
|
Epinephrine (E) (Amines
|
flight of fight
stress. |
|
|
serotonin (Amines)
|
sleep/wake cycles
depression |
|
|
Glutamate (Amino Acid)
|
Primary exhibitor of neurotransmitter of the CNS
|
|
|
GABA (Amino Acid)
|
Inhibitor in the brain
|
|
|
Glycine (Amino Acid)
|
Inhibitor in the Spinal Cord
|
|
|
Purines
|
AMP & ATP
|
|
|
EPSPs
|
Excitatory Post Synaptic Potential
|
|
|
What is EPSPs?
|
the synaptic potential is depolarizing
|
|
|
IPSPs
|
Inhibitory Post Synaptic Potential
|
|
|
What is IPSPs
|
the synaptic potential is hyper-polarizing
|
|
|
Long Termed Potential
|
Memory and Learning 3 days!
|
|
|
Long Termed Potential Amino Acid
|
Glutamate
|
