Synaptic knobs :-a- synthesize different types of neurotransmittersb- release neurotransmitters by diffusion across their membranesc- have ligand-gated Ca ++d- are located at the terminal end of dendrites

Synaptic knobs :-a- synthesize different types of neurotransmittersb- release neurotransmitters by diffusion across their membranesc- have ligand-gated Ca ++d- are located at the terminal end of dendrites

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter16: The Body's System

Section: Chapter Questions

Problem 24RQ: Neurons contain ________, which can receive signals from other neurons. a. axons b. mitochondria c....

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Concept explainers

Osmosis

In simple words, osmosis is the slow, gradual movement of a liquid through a membrane. But there are nuances to this process. For instance, there has to be an imbalance in the distribution of solute in the liquid on either side of the membrane, which has to be semipermeable. The liquid in the region with a lower solute concentration moves to the region with a higher concentration, thereby displacing the solution in the process. The objective is to equalize the concentration of molecules on both sides of the membrane; the displacement of liquid can be viewed as a byproduct of this equalization. Since there is no energy required to carry osmosis, it is considered a passive process.

Question

Synaptic knobs :-
a- synthesize different types of neurotransmitters
b- release neurotransmitters by diffusion across their membranes
c- have ligand-gated Ca ++
d- are located at the terminal end of dendrites

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Similar questions

Neurons contain ________, which can receive signals from other neurons. a. axons b. mitochondria c. dendrites d. Golgibodies
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Figure 35.11 Potassium channel blockers, such as amiodarone and procainamide, which are used to treat abnormal electrical activity in the heart, called cardiac dysrhythmia, impede the movement of K+ through voltage-gated K+ channels. Which part of the action potential would you expect potassium channels to affect?
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
All of the following are directly involved in synaptic transmission excepta. voltage-sensitive ion channels on the postsynaptic membraneb. chemical-sensitive ion channels on the postsynaptic membranec. Ca2+d. neurotransmitters
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When EPSP and IPSP occur simultaneously the postsynaptic membrane :-a- becomes depolarizedb- becomes hyperpolarizedc- initiates an action potentiald- shows potential changes that depend upon the summation of their effects
Which of the following occurs during synaptic transmission? Select ALL that apply A) vesicles filled with neurotransmitter are released into the synapse B) an action potential travels through a neuron like a wave C) neurotransmitter binds to receptors on the sending neuron D) neurotransmitter binding to a receptor triggers the opening of an ion channel E) ions enter the receiving neuron's dendrites
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Excitatory neurons A and B both synapse with neuron C. Neuron A releasesa neurotransmitter, and neuron B releases the same type and amount ofneurotransmitter plus a neuromodulator that produces EPSPs in neuron C.Action potentials produced in neuron A alone can result in action potentialproduction in neuron C. Action potentials produced in neuron B alone alsocan cause action potential production in neuron C. Which results in moreaction potentials in neuron C, stimulation by only neuron A or stimulationby only neuron B? Explain.
Neurotransmitters must pass from an axon terminal to the next dendrite by crossing a fluid-filled space called the a. synapse. c. neuron. b. reuptake inhibitor. d. glial cell.