Describe the 5 basic steps of electrical and chemical neural signaling. A strong action will explain each step. Also, describe at least one way synaptic connections can change as a result of experience or learning.
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Describe the 5 basic steps of electrical and chemical neural signaling. A strong action will explain each step. Also, describe at least one way synaptic connections can change as a result of experience or learning.
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- What is meant by the “cooperativity” of LTP?A. LTP is greater if two inputs are active together.B. LTP increases the response of many synapses, even those that were not stimulated.C. Pairing two stimuli leads to both habituation and sensitization.D. Pairing two stimuli increases the response to the stronger one.Which of the following is NOT an example of communication that happens from one neuron to another neuron? A. Endocrine signaling (ex. hormones secreted into the blood stream travel and bind to receptors on dstant cells). B. Retrograde neurotransmission (ex.the dendrite releases a neuroactive substance that binds to receptors on the axon terminal of a presynaptic neuron). C. Electrical communication via propagation of action potential from one node of ranvier to the next node of ranvier. D. Volume transmission (ex. neuropeptides diffuse away from the synapse and bind to receptors on adjacent cells) E. Electrical communication through gap junctions.For you to see the words on your compute, quite a few different types of neurons are required. what types of neurons are involved in signal transmission for you to see the words? Describe all the neural structures fro required for seeing.
- Explain how the signal transmission at a synapse in an individual with Parkinson's disease is different than an unaffected individual. List the steps involved in an action potential moving from the axon terminal of the pre-synaptic neuron to the dendrites of the post-synaptic neuron. Explain how the process is different in individuals affected with Parkinson's disease.Select all of the statements from the list below that are true. Within a single axon, an action potential is always of the same magnitude. (In other words, it always looks the same on a trace of the membrane potential.) All excitatory post-synaptic potentials trigger an action potential. Graded potentials are always hyperpolarizing. The action potential always moves in one direction along an axon. Integration of sensory information is a major function of the central nervous system. All axons in the body are myelinated.Chemical transmitters in basal ganglia include all the following, except :-a- GABAb- Dopaminec- Glutamated- Glycine
- In some cases, people who suffer from depression can be prescribed a serotonin re-uptake inhibitor if they are determined to be resistant to behavioral treatment. Explain how a serotonin re-uptake inhibitor would alter concentrations of serotonin in the brain. Would this change occur at all synapses within the brain? Why or why not?Which of the statements below describe a situation in which the change in membrane potential above could cause the firing of an action potential? Select all that apply. ___If the potential is counteracted by an IPSP. ___If the potential is strong enough to bring the axon hillock to threshold. ___If the neuron is in the relative refractory period. ___If the potential is supplemented by a simultaneous (or near-simultaneous) EPSP.Which of the following would you NOT expect with respect to variation in neural conduction velocity? Neural conduction speed increases over developmental time as Schwann cells synthesize myelin sheaths, insulating neurons Neural conduction velocity is higher in invertebrate species with insulating sheaths functionally equivalent to vertebrate myelin Neurons and species with larger axon diameters should have greater conduction velocities Neural networks with greater serial processing (i.e., lines of connecting neurons) should have greater neural conduction velocities. The thyroid hormones (triiodothyronine and thyroxine) have a range of roles in regulating growth and metabolism. Thyroid hormones act throughout the body to regulate protein synthesis, long bone growth, and neural maturation. This represents an ______ effect of thyroid hormones. At the same time, through some unknown mechanism, application of thyroid hormones results in an immediate reduction in body temperature, which…
- The absolute refractory period of an action potentialA. only ensures one-way travel down an axon.B. only allows a neuron to ignore a second signal sent that closely follows the first.C. only prevents summation of action potentials within the axonD. ensures one-way travel down an axon and allows a neuron to ignore a second signal sent that closely follows the firstE. ensures one-way travel down an axon, allows a neuron to ignore a second signal sent that closely follows the first, and prevents summation of action potentials within the axonConsider the circuit from Q5 (above). We want to add another inhibitory neuron to this circuit to increase the likelihood that neuron D will have an action potential. With which cell (A, B, C or D) should our new inhibitory neuron make a synapse to make it more likely that the post - synaptic neuron will have anaction potential?The diagram below shows a simple neural circuit with three pre - synaptic cells labelled 'A', 'B' and 'C', and a post - synaptic cell labelled 'D ' (see image below). Assume neurons A and B each have outputs of +2 and neuron C has output of -1.Sense of smell, also known as olfaction, is the ability to perceive and interpret odours. When a chemical molecule interacts with an odour-receptor protein located on the sensory neuron in the nose, an action potential is triggered and sent along the axon. The interaction between a chemical molecule and an odour-receptor protein will first initiate the movement of _____A______ ______B_____ the _____C______ of the _____D_____ neuron. Using the numbers given below, identify A to D. A B C D Chlorine ions Potassium ions Sodium ions Into Out of Axon Dendrite Axon terminal Nodes of Ranvier Interneuron Motor neuron Sensory neuron A: AnswerB: AnswerC: AnswerD: Answer