Cellular Neuroscience Flashcards Preview

Systems Neuroscience > Cellular Neuroscience > Flashcards

Flashcards in Cellular Neuroscience Deck (14):
1

Axons and Protein Synthesis

Axons don't have ER or ribosomes, so they must use axoplasmic transport.

2

Synaptic Vesicle Size

15 nm

3

Anterograde Axoplasmic Transport

Fast is vesicle bound (up to 1000 m/day) and slow is with insoluble compound.

4

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.

5

Synaptic Spines

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.

6

3 Neurite Classifications

Unipolar, bipolar, multipolar

7

2 Dendrite Shapes

Stellate (star shaped) and pyramidal (both cell body and dendrites are shaped like pyramids)

8

Golgi Type I Neurons

Projection neurons with long axons

9

Golgi Type II Neurons

Local neurons with short axons, usually involved in circuits.

10

Astrocytes

Type of glial cell. Modulate concentration of extracellular potassium and mop up spilled neurotransmitter. Keep extracellular potassium concentration low during rest

11

Myelin Making Glia

Oligodendrocytes in the brain and schwann cells, which are never found in the brain

12

Microglia

Phagocytes that scavenge and consume dead neurons and pathogens

13

Resting Potential

Inside of cell is negative compared to positive outside

14

Na/K Pumps

Keeps inside of neuron relative high in [K] and low in [Na]. Powered by ATP.