Which statement is true regarding chemical neurotransmission? O An IPSP closer to the soma will diminish the effects of an EPSP on a dendrite Chemical neurotransmission is mediated by gap junctions All neurotransmitter receptors are located on the postsynaptic cell membrane Neurotransmitters remain in the synaptic cleft indefinitely

Q: 20. are found primarily in the white matter A. myelinated axons B. neuron cell bodies C.…

A: The central nervous system includes the brain and the spinal cord. White matter is located in the…

Q: Transmission of the nerve signal across a synapse is accomplishedby thea. movement of Na+ and K+.b.…

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

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: A common feature of action potentials is that they(A) cause the membrane to hyperpolarize and then…

A: Plasma membrane always try to maintain potential difference between the sides of the extracellular…

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: Action potentials are normally initiated at the axon hillock because a. there is a particularly high…

A: When the membrane potential of a given cell location rapidly rises and falls, an action potential…

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: A neuron receives a series of stimuli that increases the membrane permeability of Na ', but not…

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

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: OFF bipolar cells express glutamate receptors at their synapses with photoreceptors and are in the…

A: Bipolar cells are the neurons that basically connect the outer portion of retina to the inner…

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

A: Chemical synapse

Q: For a neuron to fire an action potential, its membranemust reach ________.a. hyperpolarizationb. the…

A: An action potential is a rapid rise and subsequent fall in voltage or membrane potential across a…

Q: Connexons of gap junctions in electric synapses :-a- are Ligand-gatedb- are voltage-gatedc- allow…

A: In vertebrates, Gap junction funnels are made of two hemi-channels known as connexons, one…

Q: (f) Parts of a Neuron A Axon (initial B segment) G H C Synapse: The region where an Faxon terminal…

A: Neuron is the fundamental unit of the central and peripheral nervous system. Its major function is…

Q: An action potential at a given stretch of a neuron's axon does not re-stimulate the neighboring…

A: Action potential It is defined as the rapid rise and subsequent fall in membrane potential across a…

Q: Which is NOT a criterion in order to be classified as a neurotransmitter? O It is synthesized in the…

A: They are the chemical messengers which transmit the signal from neurons to a target cell across a…

Q: are found primarily in the white matter A. myelinated axons B. neuron cell bodies C. unmyelinated…

A: White matter and grey matter are the structural components of brain and spinal cord. White matter is…

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

A:

Q: During an action potential the Na+ current is inward and K+ current is outward.  You may have been…

A:

Q: EPSP acilitates depolarization of postsynaptic mem ne by increasing the permeability of the membrane…

A: Answer.    The correct answer is option (d) An EPSP facilitate depolarization of the postsynaptic…

Q: Following the activity of acetylcholinesterase, choline is A. Transported back into the neuron using…

A: The neurotransmitter acetylcholine (ACh) is released from pre-synaptic neuron into the synaptic…

Q: Depolarization is: ) Is the 2nd step of an action potential O Is the last step of an action…

A: Depolarization is defined as a transition in a cell that occurs when the cell's electric charge…

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: 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: During an IPSP, the postsynaptic membrane becomes more permeable to GABA. O Ca2+. Na+. O K+.…

A: The IPSP stands for Inhibitory postsynaptic potential. It occurs when ion channels open resulting in…

Q: Neuronal integration refers to the ability of neurons to respond to the combined effect of several…

A: Neuronal integration is a process which  resolves the electrochemical balancing of competing and…

Q: If the neurotransmitter released by the presynaptic axon is dopamine and the diffusion distance…

A: Dopamine is a brain neurotransmitter that facilitates communication between individual neurons in…

Q: nsulate parts of the neuron axon but not the cell ba are fatty menmbranes. are formed by glial…

A: Myelin sheaths are fatty tissue coverings that protect nerve cells. These cells are part of your…

Q: Solve this

A: Neurotransmitters are the chemical messengers released from the nerve cells that are used for the…

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: 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: IPSP differs from EPSP in :-a- being of shorter durationb- being unable o summate spatiallyc- moving…

A: Signal conducted at the synaptic terminal of neuron (presynaptic neuron) connected to the dendrites…

Q: A drug is called an agonist if it ________.a. blocks a receptorb. interferes with neurotransmitter…

A: Drugs can be either antagonists or agonists. Antagonist drugs are those exogenous components, which…

Q: Neurotransmitters must pass from an axon terminal to the next dendrite by crossing a fluid-filled…

A: Neurons facilitate communication in the brain. A neuron is made up of dendrites (receives…

Q: Which of the following is true of nerve impulse conduction? O Saltatory conduction occurs on…

A: Introduction A nerve fiber is a long and a slender projection of the neuron. It conducts the…

Q: Şubthreshold potentials can produce action potentials through it can't occur spatial summation…

A: An action potential is produced in a neuron through stimulation. This produces a nerve impulse that…

Q: Compare and contrast the events that occur at a neuromuscular junction (NMJ) and a neuron-neuron…

A: A chemical synapse is a point where two nerve cells or a neuron and a muscle cell meet. A…

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: What excites NMDA receptors?A. The transmitter norepinephrineB. The transmitter NMDAC. The…

A: N-methyl-D-aspartate receptor NMDA or NMDAR is a glutamate receptor  and ion channel found in…

Q: Which is not a characteristic of Action Potential? With constant magnitude Transmits signals over…

A: Action potential defines the sudden rapid rise and fall of voltage or the potential of membrane…

Q: Mammalian axon regrowth in the periphery is: Select one: O a associated with improved function after…

A: Answer :- Option (B) is correct. - Less likely than regrowth in the central nervous system.

Q: A myelinated axon conducts nerve impulses at a speed of 40 m/s. If the myelination made the speed of…

A: Neuron:  A neuron, also known as a nerve cell, is an electrically excitable cell that communicates…

Q: Which of the following statements about hyperpolarization are correct? Pick all that apply to what…

A: Hyperpolarisation is an event that occurs in neurons during the action potential.

Q: The parasympathetic postganglionic neurons are cholinergic, but the sympathetic postganglionic…

A: Introduction :- Neurotransmitters are frequently referred to as the chemical messengers of the body.…

Q: A post-synaptic cell receives a signal that causes it to hyperpolarize. Which statement is NOT true…

A: Action potentials are nerve messages. Neurons produce and convey these signals through their…

Q: An excitatory adrenergic synapse is associated with_____ acetylcholine norepinephrine GABA dopamine…

A: An excitatory adrenergic synapse is associated with norepinephrine

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: The membrane voltage at the axon hillock is not affected by_ O a. EPSPS b. temporal summation OC.…

A: Hello. Since you have asked multiple questions. We will be able to answer only the first one. for…

Q: The giant axon of the squid (Figure Q11–3) occu-pies a unique position in the history of our…

A: The Nernst equation for univalent ions at 20 degree celsius is : V=58mV x log c0/ci  in which c0 is…