Flashcards in Cellular Neuroscience Deck (14):
Axons and Protein Synthesis
Axons don't have ER or ribosomes, so they must use axoplasmic transport.
Synaptic Vesicle Size
Anterograde Axoplasmic Transport
Fast is vesicle bound (up to 1000 m/day) and slow is with insoluble compound.
Retrograde Axoplasmic Transport
Dynein carries in retrograde direction. It is rather unselective and can pick up viruses and transport them into cell body or spinal cord.
Some dendrites have them. There is a high concentration of polyribosomes and ribosomes under base of them, to elongate the dendrite to make contact with axon.
3 Neurite Classifications
Unipolar, bipolar, multipolar
2 Dendrite Shapes
Stellate (star shaped) and pyramidal (both cell body and dendrites are shaped like pyramids)
Golgi Type I Neurons
Projection neurons with long axons
Golgi Type II Neurons
Local neurons with short axons, usually involved in circuits.
Type of glial cell. Modulate concentration of extracellular potassium and mop up spilled neurotransmitter. Keep extracellular potassium concentration low during rest
Myelin Making Glia
Oligodendrocytes in the brain and schwann cells, which are never found in the brain
Phagocytes that scavenge and consume dead neurons and pathogens
Inside of cell is negative compared to positive outside