Parts of the Neuron
The branching extensions of a neuron that receive information from other neurons are called
What is a dendrite?
This is a junction between a sending neuron and a receiving neuron.
What is a synapse?
The reabsorption of excess neurotransmitter molecules by a sending neuron is called.
What is reuptake?
A drug that mimics the effects of a particular neurotransmitter is called.
What is an agonist?
Schizophrenia is most closely linked with excess receptor activity for this neurotransmitter.
What is dopamine?
The extension of a neuron that carries messages AWAY from the cell body.
What is an axon?
The microscopic gap between the terminal buttons of one neuron and the cell membrane of another neuron is called.
What is the synaptic cleft or synaptic gap?
The minimal level of stimulation required to trigger a response is called.
What is the threshold?
Chemicals that are secreted from the terminal buttons into the synapses are called
What are neurotransmitters?
Migraines are associated with an oversupply of this neurotransmitter.
What is glutamate?
These buttons are located at the end of the axon
What is a terminal buttons?
An action potential is generated by the movement of these.
What are ions?
When neural stimulation that exceeds a threshold will trigger
What is an action potential?
These block the action of neurotransmitters.
What are antagonists?
Seizures are linked to an undersupply of this transmitter.
What is GABA?
This insulation covers some axons and increases the speed of transmission of the neural impulse.
What is the myelin sheath?
A brief electrical charge that travels down the axon of a neuron is called the
What is action potential?
According to this law, a neuron fires an action potential at only one level of intensity.
What is the all-or-none law?
What is an agonist?
Depression has been linked to an undersupply of this neurotransmitter.
What is serotonin?
These cells are found in the nervous system; they nourish and direct the growth of neurons as well as the removal of dead neurons and waste products
What are glia cells?
The resting potential of an axon results from the fact that an axon membrane is
What is semi-permeable?
The minimum length of time between action potentials is determined by
What is the absolute refractory period?
Botulin poisoning from improperly canned food causes paralysis by blocking the release of this
What is acetylcholine?
Opiate drugs occupy the same receptor sites as this neurotransmitter.
What is endorphins?