Anatomy
What is a branchlike extensions from the cell body; and receives signals from other neurons and passes them to the cell body
What is dendrites
Too much of this reward-motivating hormone that influences movement, learning and attention, can cause schizophrenia.
What is Dopamine?
Specialized cells from the body's immune system attack myelinated neurons, disrupting normal synaptic transmission?
What is Multiple Sclerosis (MS)
The number of directions that an impulse can run through a neuron.
What is one way?
A neuron is a _____ in the nervous system.
What is a cell
This hormone is located in the brain stem and is involved in, mood, hunger and arousal and many autonomic processes.
What is serotonin?
Deterioration of Neurons that manufacture most of the brains dopamine
What is Parkinson's
The ___________ principle prevents a neuron from doing anything between firing and not firing.
What is all-or-nothing?
What is the extended fiber of a neuron through which nerve impulses travel from the Soma to the terminal buttons?
What is axon
This common inhibitory hormone that enables muscle action, learning and memory, is abundant in many of the brain regions.
What is gamma-aminobutyric acid, or GABA?
A group of progressive neurological disorders that destroy motor neurons
What is motor neuron diseases
During this time interval, no firing can occur due to the previous action potential.
What is refractory period?
What are the bulb-like structures at the branch endings of axons?
What is terminals
These "keys to paradise" are important to controlling emotional behaviors and pain.
What is endorphins?
Causes the death of neuron controlling voluntary movement. Lou Gehrig's disease. Is the most common of the five motor neuron diseases.
What is ALS (Amyotrophic lateral sclerosis)
The Nerve impulse activated in a neuron that travels down the axon and causes neurotransmitters to be released into a synapses.
What is action potential?
What is the fatty material that wraps around and insulates an axon?
What is myelin sheath
Abundances of this hormone that controls alertness and arousal, can lead to an elevated mood and relief from depression.
What is norepinephrine?
A type of muscle disease that weakens the musculoskeletal system caused by an inability to create dystrophin proteins.
What is Muscular Dystrophy
These two ions are essential to providing neurons with net electrical charges necessary to create nervous impulses.
What is sodium and potassium?