The Brain
Which part of the neuron generates an electric current?
Axon
What is the building block of the nervous system?
neurons
Common malady that causes forgetfulness.
Alzheimers
Why can learning and memory neurons re-grow?
We need to learn over our lifetime.
Where are tiny sacs or vesicles filled with neurotransmitters located?
end bulbs
What substance is found in end bulbs?
neurotransmitters
The part of the neuron keeps the neuron in working order.
Cell body
What happens to brain size as the result of cell loss due to Alzheimer's disease?
It shrinks.
What is an action potential?
a tiny electrical current
What part of the nervous system has the ability to sometimes regrow?
peripheral nervous system
Excitatory transmitters _____ chemical locks, inhibitory transmitters _____ chemical locks.
open, close
What do dendrites do?
Send messages to the next neuron.
What are the symptoms of Parkinson's disease?
Rigidity in limbs. Shaking of limbs.
Efferent neurons carry information away from the _____.
spinal cord
How does cocaine affect reuptake?
It prevents it - causing feelings of euphoria.
In the brain, GABA neurons replicate which substance?
alcohol
Brains grow as we grow. What mostly is responsible for this growth?
dendrites
What additional aliment might a severed limb recipient be at risk for?
serious infection due to immunal suppression drugs.
What is reuptake?
Neurotransmitters returning to the end bulbs.
Opposite & like charged ions react to each other?
Opposites attract, like repel.
What's a cause for phantom limb?
A. the brain pieces together sensations to form an image.
B. the brain remembers the body part.
C. Sensations from the brain.
What is the small space between the end bulb and neighboring dendrite called?
Synapse
Which neurotransmitter acts as a natural pain killer?
endorphins
What is the basic function of Neurons?
Transmitting and receiving electrical signals.
What is the unique relationship between neurotransmitters and receptors?
Each neurotransmitter has its own unique receptor?