General
The process by which neurons transmit signals to each other is called _____.
What is Neurotransmission?
An ____ stops a signal by repolarizing the current
What is an inhibitor?
____ recieve signals from other neurons.
What is a dendrite?
____ is an inhibitor that regulates mood, sleep, and digestion. Often called the “feel good” chemical
Wha tis Serotonin?
Neurochemicals are provided and stored by the _____.
What are synaptic vesicles?
This is a chemical used in the brain to transmit messages in the brain, I am ______?
What is a neurotransmitter?
An ____ continues a signal by depolarizing the current.
What is an Excitor?
The ____ is in charge of actually transmitting electrical impulses, it’s usually myelinated.
What is the Axon?
____ is an excitor that heart rate, blood pressure, and blood sugar levels in stressful situations. It’s also known as epinepherine
What is adrenaline/epinephrine?
Disruption of neurotransmission can cause conditions such as _____
What is depression, Parkinsons, anxiety?
When the sum of a stimulus reaches -55mV, the neuron must fire, this is the _____ principle
What is All or Nothing?
_____ Conduction rapidly refreshes the signal, leading to slower transmission speed.
What is Continuous?
True or false, ONLY electrical signals are involved in neurotransmission.
What is false?
____ is the most common excitor in the brain, in charge of cognitive functions like thinking and memory.
What is Glutamate?
The action potential travels down the _______ and reaches the axon terminal
Axon
The period when the membrane depolarizes and can’t receive another message is called?
What is the Refractory Period?
_____ Conduction uses myelinated sheaths to insulate the signal, leading to faster transmission speed.
What is Saltatory?
Why do some axons continuously refresh their signals while others do not?
What is the Myelin Sheath?
____ is the most common inhibitor in the nervous system, regulating anxiety, irritability, concentration, sleep, seizures and depression
What is GABA?
The Process of Excytosis is
When cells move large objects outside of itself utilizing small membrane spheres called vesicles. This is a form of active transport, requiring energy.
While ionotropic channels utilize quick lasting effects, _____ channels lead to differences in gene expression and create longer effects
What is Metabotropic?
While ____ neurons send signals to a synapse, ____ neurons receive signals from the synapse.
What is presynaptic and postsynaptic?
The ___ is what protects neurons from unwanted substances in the brain, this is maintained by astrocytes.
What is the Blood Brain Barrier?
____ is the neurotransmitter that plays a key role in muscle contraction, opening sodium ion channels in the muscle.
What is Acetylcholine/ACh?
How does myelin help speed up nerve signals?
myelin acts like insulation around a wire, allowing the electrical impulses to travel faster and more efficiently between neurons