The chemical communication in animal nervous systems involve: O Electrical charges traveling within a neuron an launching an action potential. Neurotransmitters traveling across a synapse and binding the dendrites of another neuron. O Electrical charges traveling across a synapse and activating the axons of another neuron. Neurotransmitters traveling within a neuron and launching an action potential.

The chemical communication in animal nervous systems involve: O Electrical charges traveling within a neuron an launching an action potential. Neurotransmitters traveling across a synapse and binding the dendrites of another neuron. O Electrical charges traveling across a synapse and activating the axons of another neuron. Neurotransmitters traveling within a neuron and launching an action potential.

Anatomy & Physiology

1st Edition

ISBN:9781938168130

Author:Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark Womble

Publisher:Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark Womble

Chapter12: The Nervous System And Nervous Tissue

Section: Chapter Questions

Problem 6ILQ: Visit this site (http://openstaxcollege.org/l/neurolab) to see a virtual neurophysiology lab, and to...

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# 3 0000O LS À Moving to another question will save this response. Question 5 These neurons belongs to the CNS: (More than one possible choice) A neuron in the brain UA 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 A Moving to another question will save this response. APR étv 9. 1. 08 F2 F4 F5 93 %24 %
Which of the following statements is FALSE? (Choose the best answer) O Neurons in the nervous system use electrical and chemical synapses to communicate between neurons and their target cells. Chemical synapses allow presynaptic neurons to excite or inhibit the postsynaptic neurons. O Electrical synapses allow presynaptic neurons to excite or inhibit the postsynaptic neurons. O Electrical synapses allow direct exchanges of both electric current and cytoplasmic contents. A single neuron uses either the electrical or chemical synapses to communicate with its target cells.
This type of signal involves the movement of ions across the plasma membranes: graded potentials action potentials both graded potentials and action potentials neither graded potentials nor action potentials This type of signal loses strength as it travels from its point of origin graded potentials action potentials both graded potentials and action potentials neither graded potentials nor action potentials EO 000 DOO
What is the difference between an action potential and a synapse? (select all that apply) The action potential moves down the axon and a synapse is between neurons. The synapse travels long distances and the action potential can only travel short distances. The action potential starts at the dendrites and the synapse starts at the ахon. The action potential is always the same and the synaptic potentials vary. the action potential involves only the postsynaptic neuron, but the synapse involves both the pre- and post-synaptic neurons.
Chemical synapses in the nervous system :-a- allow diffusion of chemical substances form the presynaptic neuron into the postsynaptic neuronb- allow transmission of potential changes in one direction only; from the presynaptic to the postsynaptic neuronsc- have potential-gated ionic channelsd- are more numerous in the peripheral nervous system than the central nervous system
Which of the following statements is true about inhibitory synapses (IPSPs)? inhibitory neurotransmitters make the post-synaptic neurons more likely to have an action potential inhibitory neurotransmitters make the receiving cell less likely to have an action potential inhibitory synapses are calming inhibitory neurotransmitters are never good as they always inhibit important life processes
Visit this site (http://openstaxcollege.org/l/neurolab) to see a virtual neurophysiology lab, and to observe electrophysiological processes in the nervous system, where scientists directly measure the electrical signals produced by neurons. Often, the action potentials occur so rapidly that watching a screen to see them occur is not helpful. A speaker is powered by the signals recorded from a neuron and it pops each time the neuron fires an action potential. These action potentials are firing so fast that it sounds like static on the radio. Electrophysiologists can recognize the patterns within that static to understand what is happening. Why is the leech model used for measuring the electrical activity of neurons instead of using humans?
The big picture: draw two neurons in communication Label the presynaptic neuron, postsynaptic neuron and synapse. Label on both neurons: dendrites, axon, cell body Draw an arrow indicating the flow of information through both neurons Label where the electrical signal (action potential) travels Label where the chemical signal (neurotransmitters) travels
Lidocaine is an anesthetic that is commonly used in medical and dental practices. After being injected or applied to the skin, lidocaine very quickly causes numbness in that area by affecting nerve transmission. Which option below is a possible mechanism by which lidocaine might work? Mimics the neurotransmitter released by sensory neurons Causes an influx of calcium into the axon bulb of sensory neurons Prevents the opening of sodium channels in the sensory neurons
Specifically neuroadaptation in drug users consist in the molecular basis in which the receptor population for an endogenous substance is reduced the binding rate of the abused substance increases drastically reprogramming of the binding affinity of the drug of choice simply an excuse to continue using a particular substance
Researchers have designed a neuron that's unable to produce and release neurotransmitters. Can that neuron still have an action potential? Choose the answer with the correct answer and the correct reasoning. O No, action potentials need neurotransmitters to increase message speed O No, a neuron can't receive messages without its own neurotransmitters O No, a lack of neurotransmitters would leave a neuron unmyelinated O No, action potentials don't occur in the axon O Yes, action potentials don't require neurotransmitters:
8 of 16 Which of the following statements best describes autocrine signalling? O A cell communication mechanism in which the signalling molecules bind to receptors located on the cell secreting the signalling molecules. O A cell communication mechanism in which the signalling molecules bind to receptors located on adjacent cells. O A cell communication mechanism in which the signalling molecules are released into the circulatory system to bind to receptors located on cells in tissues some distance away. O A cell communication mechanism in which the signalling molecules are peptide hormones. O A cell communication mechanism in which the signalling molecules are steroid hormones.