Nerve Physiology Flashcards
Specific astrocytes found in gray matter; short branching
Protoplasmic astrocytes
Specific astrocytes found in white matter; long thin unbranched processes
Fibrous astrocytes
Acts as main phagocytes in the CNS
Microglia
Creates myelin in the CNS
Oligodendrocytes
Secrets myelin in the PNSl only wraps around a single axon
Schwann cells / Neurolemmocyte
K+ equilibrium potential
-94 mV
Na+ equilibrium potential
+61 mV
Rough er and loose ribosomes that replenish plasma membrane proteins
Nissl bodies / Chromatophilic bodies
Gaps in the unmyelinated axon fiber that also helps in transmission of impulses in saltatory conduction
Nodes of Ranvier
Star shaped gila cells in the CNS that helps in repair and scarring process of the brain and spinal cord
Astrocytes
Astrocytes found in gray matter
Protoplasmic astrocytes
Astrocytes found in white matter
Fibrous astrocytes
Acts as main phagocytes in the CNS
Microglia
Chemical substances that affection action potential:
Blocks voltage gated Na channels; from puffer fish
Tetrodotoxin
Chemical substances that affection action potential:
Blocks voltage gated Na channels from dinoflagellates and cyanobacterium
Saxitoxin
Chemical substances that affection action potential:
Blocks voltage gated K channels; from honeyee
Apamin
Chemical substances that affection action potential:
Keeps Na channels form closing; form poison arrow frog
Batracho toxin
Chemical substances that affection action potential:
Blocks K channels; from indian red scorpion
Iberio toxin
Trend (high–>low) of susceptibility of neurons according to: Hypoxia
BAC
Trend (high–>low) of susceptibility of neurons according to: Pressure
ABC
Trend (high–>low) of susceptibility of neurons according to: Local anesthetics
CBA
