The Neuron Flashcards
What is the charge inside a neuron?
Negative
what is the charge outside the neuron?
Positive
what is it called when the neuron is at rest?
Resting potential
how much K+ enters?
2
what does Dendrites mean?
Tree
what neurotransmitter is associated with Parkinson’s disease, movement regulation, reinforcement, and cravings?
Dopamine
what neurotransmitter is associated with addiction, pain perception, mood, exercise?
Endorphin
what do dendrites do?
receives information from other cells
what neurotransmitter is associated with depression and stress, arousal, learning, memory, sleep, mood?
norepinephrine
What is the threshold for a neuron?
-55mv
How fast does a neuron send a message?
1/1000th of a second
What are terminal buttons?
transforms the message or signals and send it to the next neuron
What is the Axon hillock?
Allows energy/electricity to build
what is a happy neutron number?
-70mv
what neurotransmitter is associated with Alzheimer’s, learning. memory, and muscle contraction?
Acetylcholine
What tells vesicles to fuse with membrane and bind to the receptor sites that open a channel?
Receptor sites
how much Na+ leaves the neuron?
3
what is Myelin sheath?
a rubbery substance that does not conduct electricity
what neurotransmitter is associated with depression, emotion, sleep, sensory perception?
serotonin
what are Nodes of Ranvier?
Axon exposed between Myelin
what is another name for cell body?
Soma
What does the nucleus do?
controls whether or not information can be sent down or up.
who are Hodgkin and Huxley?
they won the noble prize in 1963 they also discovered electrochemical inside neuron is electrical, outside of neuron is chemical.
What is the transfer the neurotransmitters to the gap?
Vesicles
