Neurons

During the _____, the neuron works to return the balance of ions together by pumping out sodium and moving potassium into the axon.

Refractory Period

If a telephone system was analogous to a neuron, the telephone receiver would represent the dendrites, the switchboard would represent the _____, and the telephone line would represent the axon.

Soma

There is a dance event going on with students attending from two different elementary schools. Students from one school are wearing purple shirts and students from the other school are wearing silver shirts. Imagine that the students in the purple represent potassium ions and the students in silver represent sodium ions, while the gymnasium represents the neuron. If their distribution is similar to what occurs during the resting potential for a neuron, which students would be more highly concentrated inside the building?

The students in the purple shirts would be more highly concentrated.

Javier was a professional football player for 12 years. During his career, he experienced several concussions which caused severe headaches near the end of his career. Javier has been retired for 10 years and is experiencing memory and comprehension problems, excruciating migraines, and bouts of depression. Javier may be diagnosed with:

chronic traumatic encephalopathy.

In order for an action potential to occur, the neuron must:

have high acting potential

Presynaptic neuron is to postsynaptic neuron as:

message-sending neuron is to message-receiving neuron.

In synaptic transmission, the action potential stimulates the release of:

neurotransmitters by the synaptic vesicles.

If a neuron was compared with a prison, the potassium ions could be compared with the _____ when the neuron is at the resting potential.

prison guards

High dopamine levels are linked to

schizophrenia

Yael floats a note across a river to Faye instead of directly passing it from her hand to Faye's hand. If this scenario is compared with communication between neurons, the river represents the:

synapse.

The action potential travels down the length of the axon. When it reaches the _____, the neurotransmitters are released into the synapse.

terminal buttons