Nervous System Flashcards
Atrocytes
Major glial cell type of the CNS
Role of astrocytes
Regulate extracellular environment, synaptic communication, blood flow, blood brain barrier
Oligodendrocyte
Myelinating cells of the CNS
Microglia
Phagocytic cells of the CNS
Role of microglia
Clear up debris left by dead/dying cells and synaptic remodelling
3 types of glial cells
Astrocytes
Oligpdendrocytes
Microglia
3 types of neuron
Sensory afferent
Inter-neurons
Motor neurons
Voltage
A force that causes electrically charged particles to move between 2 points
Net negative charge inside the axon
-70mv
Movement by sodium-potassium pumps
2K+ into the cell and 3Na+ out of the cell
Where are thermoreceptors found?
End bulbs of Krause (tongue)
Where are mechanoreceptors found?
Pacinian corpuscle (skin)
Where are chemoreceptors found?
Olfactory receptors (nose)
Where are photoreceptors found?
Rods and cones of the eye
What do nociceptive neurons detect?
Pain