1.3 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