_________________________ is an example of presynaptic modification of synaptic activity. Group of answer choices Up regulation of neurotransmitter receptors All of these are presynaptic modifications An axoaxonic synapse Receptor desensitization

Q: Each of the following contributes to the unidirectional propagation of nerve signals EXCEPT_ A)…

A: If too many mistake are introduced in the chromosomes during DNA replication, the cell will not…

Q: During a typical action potential in a nerve, which of the following is happening?  Multiple…

A: Action potential generates when the neurons want to pass the information along the body from its…

Q: Which of the following sentences is NOT correct? A. Axon can branch B. Afferent neurons are…

A: Axons can divide into many branches called telodendria. At the end of each telodendron is an axon…

Q: The following figure is showing; Node Node Myelin sheath Node of Ranvier (a) Na+ ONa* Depolarization…

A: Axons are slender fibres that stretch from a neuron, or nerve cell, and are accountable for…

Q: Postsynaptic receptors include all the following types, except :-a- G-protein coupled receptorsb-…

A: Metabotropic receptors are also referred to as G protein linked receptors or G protein coupled…

Q: Which of the following neurons depicted below will generate the largest post-synaptic response? A В…

A: The pre synaptic neuron releases neurotransmitters in the synaptic cleft. These neurotransmitters…

Q: Which of the following neurotransmitters would activate an adrenergic receptor? Acetylcholine…

A: The adrenoceptors or the adrenergic receptors refers to a class of G-protein coupled receptors,…

Q: Parkinson's Disease Parkinson's disease is neurodegenerative disorder that affects movement. Most…

A: A neurotransmitter is a chemical messenger that transmits signals.

Q: Posttetanic potentiation of a synapse increases the amount of in the axonterminal.a.…

A: The nervous system is highly complex among different organ systems in animals. By transmitting…

Q: Synaptic transmission is inhibited by all the following, except :-a- oxygen lackb- alkalosisc-…

A: The synapse is the junction between two neurons where there is a small gap that neurotransmitters…

Q: Taylor accidentally dips his fingers into a cup filled with steaming hot coffee. He immediately…

A: When touching a hot object the hands automatically withdrew due to the action of nervous system.…

Q: mystery compound, compound B. You add it to the dish with your hippocampal circuit. You fire the…

A: EPSP is excitatory post synaptic potential which is initiated by the movement of positively charge…

Q: At a given synapse, the _____ neuron has neurotransmitter receptors.

A: Neurotransmitter receptors:                       The receptors present in the plasma membrane of…

Q: You are a neuroscientist and have been provided a sample of a new snake venom. You test its effect…

A: Introduction A neurotransmitter is a chemical messenger that transports, enhances, and balances…

Q: Once a pre-synaptic neuron has stopped firing, all of the following will stop the local potential in…

A: Once the neurotransmitters have been released and have bound to postsynaptic receptors,…

Q: Post-tetanic Potentiation in synapses :-a- is due to increased Ca ++ concentration in postsynaptic…

A: Nerve cells form the functional unit of the nervous system and play an essential role in…

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: 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: Explain how the signal transmission at a synapse in an individual with Parkinson's disease is…

A: Neurons are the major structural and functional units of the brain and the central nervous…

Q: What structure is highlighted? A. Schwann cell B. Cytoplasm of Schwann cell C. Myelin sheath D.…

A: Schwann cells refer to the chief neuroglia of the PNS (peripheral nervous system). Neuroglia or…

Q: A synapse with all of these; a postsynaptic dendrite, an astrocyte end foot, and the presynaptic…

A: Introduction :- Synapses are part of the circuit that connects sensory organs in the peripheral…

Q: An action potential is generated at the... trigger zone of the axon postsynaptic membrane cell body…

A: Neurons are the excitable cells within the nervous system. When a neuron is triggered, it propagates…

Q: Neurotransmitters Synaptic vesicle Neurotransmitter re-uptake pump Ахon Voltage- gated Cat+ channel…

A: Introduction :- The chemical messengers of the body are typically referred to as neurotransmitters.…

Q: What type of synaptic potential (if any; be sure to indicate if any modification is occurring as…

A: Monoamine oxidase inhibitors (MAOIs) are a class of medication used to treat depression. Resting…

Q: Gaba spillover from the inhibitory synapses can activate heteroreceptors and block presynaptic…

A: Presynaptic GABA type B receptors have the ability to modulate synaptic transmission in the nervous…

Q: Two excitatory synapses on a neuron fire at the same time as one inhibitory neuron. Each synapse…

A: Synapse is also known as neuronal junction and it allows a neuron to pass an electrical or chemical…

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: One type of poison arrow frog toxin binds specifically to nicotinic cholinergic receptors and causes…

A: The nicotinic cholinergic receptors are the type of receptor that responds to the neurotransmitter…

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: Which of the following statements is TRUE about temporal summation? The postsynaptic cells potential…

A: Introduction :- Sensory summation that involves the addition of single inputs over a short period of…

Q: 1 3 Which of the following rows correctly identifies the number that represents the location of the…

A: The diagram in the question is of neurones or nerve cells. These are the fundamental units of the…

Q: Choose from the word bank below to complete the following statements. inhibitory parasympathetic…

A: Human brain is divided into forebrain ,mid brain and hindbrain. Human brain is symmetrically divided…

Q: 1. A group of nerve fibers outside the CNS is a(n): 2.  A group of nerve fibers inside the CNS is…

A:

Q: In which of these ways does a metabotropic synapse differ from an ionotropic synapse? a. Its effects…

A: The binding of neurotransmitters activates the ionotropic and metabotropic membrane-bound receptors.…

Q: which one of the following statements is incorrect? a. temporal summation occurs when a single…

A: A neuron is a basic unit that serves as a medium for the transmission of a signal (nerve impulse)…

Q: Short-term memory, like remembering a phone number, is stored as a Long Term Potentiation (LTP) of…

A: LTP is a long-term potentiation of the synapse. It means that on following the high-frequency…

Q: The image shows a neuronal synapse. The pre-synaptic neuron has not had any action potentials. Where…

A: Impulse is defined as the transferring of message from one neuron to another. It can be of chemical…

Q: Heidi’s physician prescribed a medication that is known to block the reuptake of serotonin…

A: A neurotransmitter is a chemical messenger that transmits signals from one neuron to other or to the…

Q: Substrate B is NEURON X Axon terminal of a cholinergic neuron Substrate A Synthesis and packaging…

A: Neurotransmitter are the message carriers that sends information from one neuron to other neuron or…

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 of the following statements is correct? O Myelin sheaths form an insulating layer around the…

A: Neuron Neurons are also called as nerve cells and are the fundamental units of nervous system. It…

Q: Select

A: Action potential:- An action potential is defined as a sudden,fast, transitory and propagating…

Q: Lidocaine is an anesthetic that is used to prevent the propagation of action potentials. Which…

A: The neurons are the nerve impulse generating and transmitting cells in our nervous system that have…

Q: Electrical current can flow directly from one neuron into other across this type of synapse due to…

A: The neurons are the components of the nervous system that help in the transmission of signals from…

Q: Prozac is a SSRI (selective serotonin reuptake inhibitor). Its actions to selectively block…

A: Prozac is a drug that is prescribed in the management of acute and maintenance of acute depressive…

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…

Q: Alzheimer’s disease is thought to cause a DECREASE in the amount of acetylcholine (ACH) being…

A: Acetylcholine is the chief neurotransmitter of the parasympathetic nervous system, that contracts…

Learning and memory

Learning is defined as a relatively permanent and irreversible adaptive change in behavior. It always results from experience. The ability of an organism to store and recall the effects, sensations, and knowledge gained through learning and experience is called memory.