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Example Questions
Example Question #15 : Neurons And Action Potentials
Which of the following describes one function of an interneuron?
It connects sensory neurons and motor neurons
It conveys information from the outside world to the brain
It transmits information across the synapse
It insulates axons
It helps produce movement
It connects sensory neurons and motor neurons
Interneurons connect sensory neurons to motor neurons.
It is motor neurons that help produce movement, sensory neurons that convey information from the outside world to the brain, myelin sheaths that insulate axons, and neurotransmitters that transmit information across the synapse.
Example Question #1312 : Ap Psychology
What is the name of the time after a neuron fires?
Refractory period
Synapse
Resting potential
Action potential
Refractory period
The time frame when a neuron cannot fire because it has just fired is called the refractory period.
Example Question #16 : Neurons And Action Potentials
What causes the synaptic vesicle to move towards and fuse with the cell membrane allowing for release of neurotransmitter?
Resting potential
Refractory period
Action potential
Nodes of Ranvier
Action potential
Action potentials travel down the axon to the axon terminal. When an action potential arrives in the axon terminal it signals the synaptic vesicles to move toward the cell membrane. The synaptic vesicle fuses with the cell membrane and releases neurotransmitter.
Example Question #906 : Individual Psychology And Behavior
When leftover neurotransmitter is present in the synapse there is a process that allows the neurotransmitter to be reabsorbed by the releasing neuron. What is this process called?
Reuptake
Release
Inhibitory
Excitatory
Reuptake
Reuptake is a term used to describe the process of a neuron absorbing the remaining neurotransmitter back into the axon terminal for release. SSRIs used to treat depression, they function by inhibiting this reuptake process for serotonin.
Example Question #21 : Neurons And Action Potentials
Which neurotransmitter has an inhibitory effect on heart muscle fibers but has an excitatory affect on skeletal muscle fiber?
GABA
Dopamine
Serotonin
Acetylcholine
Acetylcholine
Acetylcholine affects movement, learning, memory and REM sleep. It has an excitatory affect on skeletal muscle fiber and an inhibitory affect on heart muscle fibers.
Example Question #901 : Individual Psychology And Behavior
If a person is having issues with mood regulation and aggression they are most likely caused by which neurotransmitter?
Serotonin
Glutamate
Epinephrine
Norepinephrine
Serotonin
Serotonin affects mood, sleep, appetite, impulsivity and aggression. If a person's level of serotonin is too high or too low it could affect mood and aggression. Depression has been directly linked to serotonin levels, and the most regularly prescribed Anti-Depressant drugs (SSRIs) regulat the serotonin re-uptake process, thus elevating the serotonin levels in patients.
Example Question #902 : Individual Psychology And Behavior
Which of the following neurotransmitters is usually found between motor neurons and skeletal muscles?
Acetylcholine
Norepinephrine
Seratonin
Dopamine
Epinepherine
Acetylcholine
Acetylcholine is among one of the best understood neurotransmitters. Acetylcholine plays a part in learning, memory, and motor control. It's responsible for muscular contraction upon release and sensing by the cell receptors; therefore, it is usually found between motor neurons and skeletal muscles.
Example Question #21 : Neurons And Action Potentials
Which of the following is an example of a malfunction linked to blocking the transmission of gamma-aminobutyric acid (GABA)?
Overstimulation of the brain that causing migraines
Increased memory loss
Increased difficulty in waking from sleep
Increased bouts of depression
Increased occurrences of tremors, seizures, and insomnia
Increased occurrences of tremors, seizures, and insomnia
GABA is known to be a major inhibitory neurotransmitter. GABA is observed to be most active in the brain during times of rest and sleep. In a sense, it inhibits being awake and it can reduce the occurance of tremors and seizures. As a result, malfunctions linked to blocking the trnsmission of this neurotransmitter can result in tremors, seizures, and bouts of insomnia.
Example Question #22 : Biology
Which of the following choices best describes the term associated with the process of developing synapses?
Plasticity
Aphasia
Synaptogenesis
Pruning
Synaptogenesis
Synaptogenesis is the process of developing synapes. Synaptogenesis occurs throughout the lifespan and in spurts; this process results in the generation of dendrites and axons.
Example Question #22 : Neurons And Action Potentials
Which of the following choices best describes the term associated with the process of removing unnecessary synapses?
Pruning
Myelination
Plasticity
Synaptogenesis
Pruning
When synapses are unnecessary or redundant the brain eliminates them. This process is known as pruning. Pruning is a crucial part of the development process and follows each synaptogenesis spurt.
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