These neurons belongs to the CNS: (More than one possible choice)     A neuron in the brain     A neuron carrying a signal into a skeletal muscle     A neuron carrying a signal into cardiac muscle     A neuron carrying signals form receptors in the skin     A neuron carrying signals from the stomach     a neuron in the spinal cord grey matter

Which of the following is not true of glial cells?     They are more numerous than neurons.     They transmit information.     They have diverse functions in support of neurons.     They can be a cause of brain tumors.

You have a neural system with three neurons; two presynaptic (PS1 and PS2) and one postsynaptic (Post). Over a fixed period of time, PS1 and PS2 generate the pattern of action potentials. Both deliver the same pattern. PS1 delivers EPSP to Post and PS2 delivers IPSP to Post. Also present in the system is a chemical that inhibits the binding of PS2's neurotransmitter to Post's receptors. Will Post be likely to produce an action potential in response to this situation?

Dopamine is a neurotransmitter produced by the nervous system that is involved in the pleasure/reward system in the brain. The release of dopamine in response to a stimulus produces feelings of happiness and satisfaction. Cocaine is a type of drug that affects the brain response to dopamine. Usually after dopamine is released into the synaptic cleft, it is quickly re-absorbed into the neuron using dopamine transporters. However, cocaine blocks these transporters which causes dopamine to remain in the synaptic cleft for a long period of time. How would this impact the neuron's ability to communicate? Neurons will produce smaller action potentials because more dopamine is binding to receptors on the neuron, preventing the neuron from reaching the threshold potential Neurons will be under-stimulated because dopamine will bind to receptors and prevent ions from moving into the neuron, preventing electrical signaling Neurons will produce larger action potentials because more dopamine is…

Order the following in the correct sequence that results in generation of action potential local potential is generated at axon hillock action potential may or may not result in subsequent post synaptic neuron depending on type of neurotransmitter and receptors etc. stimulus is picked up by dendrites If the potential reaches a threshold, action potential spreads throughout the axon signal then reaches synaptic knob, which releases neurotrasmitters A Moving to another question will save this response. « < Question 51 17 étv 80 DII DD F2 F3 F4 F5 F9 F10 23 24 2 3 4 5 6 7 8. 10 R T Y S. D J K C V * CO

Transcranial Magnetic Stimulation causes an involuntary motor output in response to a magnetic stimulation over the skull. Why do we see this output?  Include the following concepts in your response: •neuroanatomy •central versus peripheral nervous system •neuron structure and direction of information flow •hyper versus depolarization •specific ions •membrane potential •diffusion and electrostatic pressure

For the nervous system to convey information using electrical signals, the signals typically must be passed from one neuron to another. Oftentimes, this transfer of information across the synapse occurs via the release of neurotransmitters from the pre-synaptic terminal. When a large stimulus is detected in one neuron, it often conveys this information by releasing a larger amount of neurotransmitter into the synapse.

If a potassium channel is held open for even longer, leading to an even bigger hyperpolarization of the cell what will happen in an afferent neuron? action potentials will have a larger amplitude  action potentials will have a small amplitude less frequent action potentials in the neuron  more frequent action potentials in the neuron

Summation means that a post-synaptic neuron only has an action potential if:     there are no IPSPs     there are no EPSPs     there are more IPSPs than EPSPs     there are more EPSPs than IPSPs

a channel can be gated mechanically, voltage or by a ligand. When you hear a sound all three of these type channels are being utilized. Explain generally where/how each of these channels are being utilized starting from hearing the sound, through travelling down a nerve to transmission to another nerve.