Nervous System Flashcards
What are temporal summations
Temporal: Same space / Different time
Spatial summations
Spatial: Different space / Same time
Sodium/potassium pump
3 Na+ out/ 2 K+ in
Where are astrocytes located and what do they do?
In glial cells.
Blood-brain barrier. Controls solutes moving
from bloodstream –> nervous tissue.
Role of ependymal cells
The barrier between cerebrospinal fluid and
interstitial fluid of the CNS.
Microglia
Digest waste in CNS.
Schwann Cells:
Myelinated PNS
Oligodendrocytes:
CNS, makes myelin.
White Matter:
Myelinated sheaths.
Grey Matter:
Cell bodies and dendrites. Unmyelinated.
Brain:
White deep / Grey outer
Where is grey matter and white matter located in the spinal cord?
Grey deep / White outer
Monosynaptic:
Sensory neuron –> Motor neuron
Polysynaptic:
Sensory –> interneuron –> motor
What are the neuron transmitters released in preganglionic neuron in sympathetic
Acetylcholine
What neurotransmitter(s) is released in the sympathetic nervous system postganglionic?
Epinephrine and norepinephrine
Which neurotransmitters are released preganglionic in the parasympathetic nervous system
Acetylcholine
What neurotransmitter is released postganglionic in the parasympathetic nervous system?
Acetylcholine
