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Chapter 1 of PBSI 235 (Part 1). This includes parts of the nervous system and their functions.
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What is the job of a neuron?
send signals to each other
What are the zones of in a neuron
Input
Integration
Conduction
Output
What happens in the input zone?
dendrites receive signals and turn them from chemical to electrical
What does the integration zone do?
the soma integrates information, determining if and when to send it
What does the conduction zone do?
sends information from the dendrite down the axon
What does the output zone do?
The axon terminals send the info to the next neuron
Neurons communicate with each other ________
chemically
Neurons communicate inside itself _________
electrically

What part is A?
Dendrite

What part is B?
Soma

What part is C?
axon

What part is D?
Node of Ranvier

What part is E
axon terminal

What part is G?
Myelin

Which type of neuron is 1?
Unipolar

What type of neuron is 2?
Bipolar

What type of neuron is 3?
multipolar
What is a synapse?
Gap between neurons
Where are presynaptic neurons located?
axon terminals
What is the role of the presynaptic membrane?
send information to the next neuron
What is the role of the postsynaptic membrane?
to receive information from other neurons
Presynaptic terminals have neurotransmitters that…
facilitate communication with the post synaptic membranes
What are glia cells?
material transporters

Which glia is the green cell?
microglia

Which glial is the clear-blue cell?
Oligodendrocytes

Which glial is the blue cell?
Astrocyte

which glial cell is this?
Schwann cell
Where are oligodendrocytes located?
Central Nervous System
Where are schwann cells located?
Peripheral nervous system
What do astrocytes do?
secretes signals
forms brain’s membrane
What do microglia cells do?
clean up injuries
Inside the CNS, a collection of neurons is called…
nuclei
Outside the CNS, a collection of neurons is called…
ganglia
Inside the CNS, a bundle of axons is called…
tracts
Outside the CNS, a bundle of axons is called…
nerves
What type of nerve sends info from the CNS to the body?
Motor
What nerves send info from the body to the CNS?
Sensory
What are the two main systems apart of the PNS?
Somatic
Autonomic
Which system connects the brain to major muscles and sensory systems?
somatic
Within the somatic system, there are two types of nerves. What are they?
Cranial
Spinal
What divisions are a part of the autonomic system?
Sympathetic
Parasympathetic
Flight or flight?
Sympathetic
Rest and digest
parasympathetic