When a postsynaptic neuron is adequately stimulated, action potentials develop at the initial segment of the axon because :-a- it contains many voltage-gated Na + channelsb- it contains the highest concentration of ligand-gated cation channelsc- it contains many voltage-gated Ca         ++ channelsd- it is more sensitive to the direct stimulant effect of neurotransmitters

Q: The release of a neurotransmitter from a terminal button produces an inhibitory postsynaptic…

A: The neurons, also known as the nerve cells, are responsible for conduction of an impulse. The…

Q: A neuron with a resting membrane potential of -75 mV receives multiple inputs giving rise to the…

A: The action potential is a condition of a nerve impulse or electrical activity when there is a…

Q: Chemical synapses in the nervous system :-a- allow diffusion of chemical substances form the…

A: An action potential when reaches the terminus of an axon it is transmitted from one another through…

Q: Which of the following would you predict would happen if you limited the amount of ATP to a neuron…

A: We have Na+/K+ ATPase channel that uses ATP to translocate 3 Na+ outside and 2 K+ outside which…

Q: Neuropeptides :-a- are synthesized in the synaptic knobsb- consist of small moleculesc- interact…

A: Neuropeptides are protein molecules released by neurons that helps them communicate with each other.…

Q: What event triggers an action potential?a. Opening of sodium channelsb. Opening of delayed potassium…

A: 1- Opening of delayed potassium channels 3-High concentration of negative ions outside the cell.…

Q: A person visits the doctor and is given a diagnosis of multiple sclerosis. In terms of neuron…

A: Answer. The axons in the Central Nervous System, that is, the brain and the Spinal cord are…

Q: f) Parts of a Neuron A C E D F Axon (initial B segment) G I Output signal Synaptic cleft J H…

A: Neurons are the essential components of the central nervous system, the cells involved in receiving…

Q: "After an action potential has just passed through the axon hillock, the voltage-gated Na+ channels…

A: Thank you for the question  Answer : If a second action potential can be generated it refers to as…

Q: An ____ neurotransmitter causes ____ of the postsynaptic membrane.a. inhibitory . . .…

A: Neurotransmitters are messengers that transfers the chemical message from one neuron to another…

Q: Repolarization of an axon during an action potential is produced by a. inward diffusion of Na+. b.…

A: A stage of action potential in which the cell undergoes a decrease in voltage, is known as…

Q: Which of the following best describes the electrical state of a neuron at rest? a. The inside of a…

A: In a neuron, the information which is conducted occurs through electrical signals. When a neuron is…

Q: Synaptic transmission depends upon :- a-direct transmission of impulses from the presynaptic neuron…

A: Nerve cell consists of a dendrite which are branched extentions that help in receiving the stimulus.…

Q: Transmission of the nerve impulse across a synapse isaccomplished bya. the release of Na+ at the…

A: Introduction  Neuron/Nerve: A neuron is a single nerve cell which consists of central cell body,…

Q: postsynaptic potential (EPSP) in it. O D. bind to neurotransmitter receptors on the postsynaptic…

A: Synapse is the area of the junction between the two Nerve cells in which the first nerve cell from…

Q: Which of the following is NOT an example of communication that happens from one neuron to another…

A: Answer: - Option a - Endocrine signalling (ex. hormones secreted into the bloodstream travel and…

Q: Synaptic transmission s terminated    by :-a- block of pretsynaptic receptorsb- elevation of Ca ++…

A: The biological process by which a neuron communicates with a target cell across a synapse is called…

Q: A/An _____ synapse is formed when a presynaptic neuron synapses with the cell body of a postsynaptic…

A: Chemical synapse

Q: Which ion channel is responsible for the release of neurotransmitters from the presynaptic neuron?…

A: The synapse or “gap” is the place where information is transmitted from one neuron to another.…

Q: When they are not being stimulated, neurons have an electrical charge across their membranes called…

A: The control and coordination of the body in humans occur by two systems: the nervous system and the…

Q: True or False a. When they are at rest, neurons are more positively charged inside than outside the…

A:

Q: Which of the following occurs first when voltage reaches the threshold level in a neuron plasma…

A: Ans: The potential is generated in the neuron or plasma membrane due to difference in sodium and…

Q: An action potential has reached the axon terminal of a presynaptic cell. As a result of the action…

A: An action potential can be defined as a short-term change that can be observed in electrical…

Q: Which of the following best describes saltatory conduction? A process in myelinated axons where the…

A: In contrast to the slow continuous process of depression extending down an unmyelinated axon,…

Q: How do neurotransmitters directly affect the postsynaptic neuron? A)They cause a change in the…

A:

Q: Which of the following are the likely explanations for the failure of a postsynaptic neuron to…

A: The postsynaptic element is often the soma or dendrite of a postsynaptic neuron. The other side of…

Q: In temporal summation. Select one: O A. IPSPS, but not EPSPS, are combined. O B. The postsynaptic…

A: Temporal Summation : It is a phenomenon in which repeated and equal intensity noxious stimuli at a…

Q: Following release of a neurotransmitter and binding to a receptor, what is the next step in the…

A: Neurotransmitters are the secondary chemical messengers that help in the transit of messages…

Q: You add an inhibitor to the voltage-gated K+ channel and then stimulated a nerve cell to cause an…

A: The nerve cells or neurons shows electrical properties that helps the neurons to conducting the…

Q: What's the consequence of glutamate release when the postsynaptic membrane expresses NMDA but not…

A: Glutamate release at normal concentrations is crucial for brain functions such as learning and…

Q: Use the figure below of neuronal communication to answer the following question. What major event of…

A: In the given figure we can see the neurons on the left is presynaptic neurons and one of the right…

Q: Action potentials at a chemical synapse travel from presynaptic terminal to postsynaptic membrane.…

A: Chemical synapses are connections between two neurons. There is a 0.02 μ gap between the presynaptic…

Q: Inhibitory postsynaptic potentials cause what type of change at the post-synaptic membrane?…

A: Introduction:  Post-synaptic potentials are neurotransmitter receptors that mediate changes in…

Q: On what part of the neuron are NT receptors typically located?  If the activated NT receptors cause…

A: The correct option is C (action potential).Neurotransmitter receptors are located on the surface of…

Q: Which statement below best describes why action potentials travel in only one direction? O The…

A: Action potential refers to the rise in the electrical activity from a resting state due to an…

Q: You apply a drug to a batch of neurons and record membrane potential changes in the presynaptic and…

A: Here membrane potential raises from -70mv to - 55mv.  That means depolarization occurs.  At…

Q: Synaptic fatigue is due to : -a- decreased synthesis of neurotransmittersb- inability to release…

A: A synapse is a site between an effector organ and neuron or between two neurons. A neuron is the…

Q: Which of the following statements concerning synapses is FALSE? O A) Modulation of synaptic strength…

A: The transmission of signal/information between neurons takes place through spaces known as synaptic…

Q: Which statement is true regarding chemical neurotransmission? O An IPSP closer to the soma will…

A: The cells of the nervous system have a significant functionality i.e. Communication. At the neuronal…

Q: - The velocity of action potential is high in: a- Myelinated-small diameter neuron b-…

A: Introduction:- Neurons, which are brain cells, transmit information and instructions throughout the…

Q: Opening of ligand-gated Cl- channels causes :-a- inhibition of the postsynaptic neuronb-…

A: Ligand gated ion channels open in response to specific ligand molecules binding to the extracellular…

Q: Presynaptic inhibition is characterized by all the following, except :-a- increased Cl- influx into…

A: Presynaptic neuron sends message from its axon terminals and post synaptic neuron receive this…

Q: Which part of the neuron likely contains the most vesicles? a. Dendrites b. Cell body c. Nucleus d.…

A: The neuron is the brain's fundamental working organ, a specialised cell that transmits information…

Q: In chemical synapses, transmission occurs in a forward direction     because :-a- neurotransmitter…

A: The junction between the two neurons is known as synapse. For signal transmission in the CNS of…

Q: Synaptic knobs :-a- synthesize different types of neurotransmittersb- release neurotransmitters by…

A: The correct choice is C.

Q: A neurotransmitter can have one of two effects on the postsynaptic neuron. If a neurotransmitter…

A: The nervous system is composed of neurons and neuroglia cells. Neuron is the major part of our…

Q: You are investigating the effects of a newly discovered cell type. You have an intact synapse…

A: The nervous system is made up of the brain, spinal cord, cranial nerves, and spinal nerves. It is…

Q: Long-term potentiation of synaptic transmission :-a- is involved in pain control systemb- is caused…

A: The nervous system is one of the vital systems of a body. It is a system of nerves which carry…