Lecture 2 Flashcards
(16 cards)
What are neurons?
Cells that communicate with eachother by electrical and chemical means, responsible for movement, perception, thought, etc.
What are glia cells?
support cells that regulate the environment and give the neurons a substrate to live in
What is the soma?
The cell body
What is the cell membrane?
surrounds cell and maintains integrity
What are some things that make neurons different from normal cells?
they don’t reproduce, they have polarity, and they have dendrites and axons
What is the Nissl stain?
selectively stains the cell bodies of neurons
What is the pyramidal cell?
common in the cerebral cortex, named because of pyramid shape
What is the stellate cell?
star like extensions of dendrites
What are bipolar cells?
found in the retina
How does an axon transport info from cell body?
It’s the input to a different cell and the output of another
What is the peripheral nervous system?
nerves in the body
What is the central nervous system
spinal cord and brain
Autonomic nervous system?
regulates heart rate, digestive tract, etc
What is the axon tract for the touch system>
dorsal column
What happens if an infection enters the nervous system
Very hard to fight off because nervous system doesn’t have a lot of immune cells, is called meningitis
What is a tight junction
specialized proteins that bind to adjacent cells together, making tight seals
