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Create a question about the action potential of the human nervous system and a voltage source of 1124 volts. Then answer it.

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The nerve impulses always travel in one direction from dendrites to axon terminals. What prevents an action potential from travelling backward? a. Hyperpolarization of the neuron makes the membrane more positive and prevents another action potential. b. After repolarization, the refractory period occurs, where the sodium ions are found outside the cell. c. After repolarization, the reversal of ions prevents another action potential as there would not be enough sodium ions outside the cell to rush in. d. The refractory period prevents another action potential by lowering the threshold potential.
At rest, a neuron has a lower concentration of sodium than the surrounding fluid. When a neuron sends a signal, it opens sodium channels. What happens to the sodium when the sodium channels open? A. The sodium diffuses out of the cell. B. The sodium is pumped into the cell. O C. The sodium is pumped out of the cell. O D. The sodium diffuses into the cell. nswered MacBook Air 20 F3 F5 @ $ % & * 2 6 7 8 W E R
Impedance technology is based on the fact that blood cells increase electrical conductivity in fluids. Question 6 options: True False
Examine the graph below, and answer the questions that follow. a. Indicate the specific events that are occurring at 1, 2, 3, and 4. b. At which area of the graph are sodium ions rapidly entering the neuron? c. At which area of the graph are potassium ions rapidly leaving the neuron? At which area of the graph is the sodium ion concentration higher outside than inside the neuron? d. Membrane potential, V (mV) +50- -50- -70- -90- 0 1 1 2 3 Time (ms) 4 5 V₁ Vrest threshold
Drugs called selective serotonin reuptake inhibitors (SSRIs) affect the reuptake of neurotransmitter by presynaptic cells. SSRIs are used for the treatment of depression. Serotonin normally causes an excitatory postsynaptic potential. Explain why neurotransmitter reuptake is important. And describe what effect the SSRI would have on the response of these postsynaptic cells and why.
Imagine you are studying the activity of neurons in a mouse that is awake and interacting with other mice. If you knew that an excitatory post-synaptic potential (EPSP) occurred, you _______ predict whether it would increase or decrease the likelihood of a particular behavior The neurons you are studying could be releasing ___________ because it is the major excitatory neurotransmitter in the brain that generally depolarizes postsynaptic neurons. If you wanted to study what happens when neurons are unable to make this particular neurotransmitter you could use ___________, which is a method that prevents your gene of interest from being translated. Group of answer choices A) Could not; GABA; Electron microscopy B) Could; Glutamate; Anterograde tracing C) Could; GABA; Immunohistochemistry D) Could not; Glutamate; Antisense oligonucleotides
Moving to another question will save this response. Question 4 Sodium channels at the trigger zone initiate action potentials by a feedback negative positive potential action A Moving to another question will save this response. MAY (30) 23 tv T (OC MacBook Air A
In an experiment you place a neuron and its synaptic contacts into a medium containing no calcium ions. You stimulate the neuron causing an action potential to propagate down the axon into the axon terminal of the neuron. 3.) What is the most likely result of this experimental manipulation? A. Prolong the refractory period of the action potential B. Decrease the time required to move sodium ions out of the axon terminal C. Prevent neurotransmitter from binding to receptors on postsynaptic cells D. Enhance the voltage changes associated with the action potential E. Prevent release of neurotransmitter into the synapse
Which best defines depolarization? A. At first polarity is reversed the continues until the potential difference across the membrane is eliminated. B.None C.It reestablishes the resting potential. D. At first eliminates the potential difference across the membrane then continues until the polarity is actually reversed.
_____are short, branched extensions of neurons that receive information. The____is a cytoplasmic extension of the neuron that conveys an electrical signal along its length and releases chemical signals from its endings.
A friend’s grandfather was just diagnosed with a disease that is associated with a certain excitatory neurotransmitter. Your friend isn’t sure if it’s acetylcholine or dopamine. write an answer that explains to your friend about excitatory neurotransmitters. Provide a detailed description of the functions associated with acetylcholine versus dopamine that could help differentiate which neurotransmitter is involved.
This is a biology question regarding nerve impulses. Neurofibromatosis type 1 is a condition where tumours can grow in the nerves near the skin. The growth of tumours prevents the action potentials from quickly travelling through the neurons. Identify the nerve structure from the image below and the division of the nervous system affected by neurofibromatosis type 1. CNS = Central Nervous System PNS = Peripheral Nervous System Select one: a. Nerve Structure Division of Nervous System 3 PNS b. Nerve Structure Division of Nervous System 4 CNS c. Nerve Structure Division of Nervous System 5 PNS d. Nerve Structure Division of Nervous System 1 CNS

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