additory contex. . How do absolute and relative refractory periods contribute to the unidirectionality of an action potential? What would happen if a stimulating electrode placed halfway down an axon artificially depolarized a cell above threshold? Would an action potential be stimulated and what direction would it travel, to axon terminal, cell body, or both? Explain

Q: a.Would an action potential travels faster in an axon with a wide diameter or a small diameter? b.…

A: The structural and functional unit of the nervous system is called a neuron. A neuron is composed of…

Q: Where in a myelinated axon are nearly all of the ion channels concentrated?   options:   the cell…

A: In myelinated axons we see myelin layer on the surface of axon. So, we don't see ionic channels…

Q: Which of the following statements best describes the properties of a myelinated axons?     The…

A: Axons are surrounded by a multilayered protein and lipid covering, called the myelin sheath. Such…

Q: Temporal summation refers to: summation of action potentials in the temporal cortex. summation of…

A: IntroductionThe process of summing, which encompasses both spatial and temporal summation, decides…

Q: During the relative refractory period: Can select more than one   K+ channels are open. Na+…

A: The action potential propagation is the method in which a stimulus travels through the neurons, and…

Q: . What series of events stimulates a presynaptic neuron to releaseneurotransmitters?

A: One neuron communicate with the other at junctions known as Synapses. At these points, a neurons…

Q: toxin creates pores that are permeable to Ca2+. Describe its immediate effect on the resting…

A: Action potential the action potential is defined as the rapid rise and fall in the membrane…

Q: Describe the following terms: specificity, stimulus, receptor potential, synapse, neurotransmitter,…

A: Specificity indicates what percentage of those who do not have the condition have a negative result…

Q: Compare and contrast graded potentials and action potentials. What are the functions of graded…

A: In animal cells, the plasma membrane expresses several types of ion channels that participate in the…

Q: state the functions of the following: Neuron      Cell body          Nissl bodies      Dendrites…

A: The structural and functional units of the nervous system which are capable of sending and receiving…

Q: When is an action potential triggered? (Choose 1)     When IPSPs exceeds EPSPs   When EPSPs exceeds…

A: The development of action potential depends on the movement of specific ions into the neurons that…

Q: with creative freedom illustarte the events of resting potential, depolirization and repolirisation…

A: Resting membrane potential is electrical potential difference across the membrane when the cell is…

Q: Explain the all-or-none law of action potentials, and describe the effect of increased stimulus…

A: In reaction to stimuli, the axon membrane permeability to and depends on the opening of gated…

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: Compare graded and action potentials in a typical neuron. At a minimum you should include a…

A: graded potential are variable strength signals that can be transmitted over short distance ; action…

Q: How does myelination affect the speed of the action potential? by increasing the concentration…

A: Neurons have the ability to generate and conduct nerve impulses that is the fundamental basis of…

Q: Describe how depolarization occurs along an unmyelinated neuronal axon

A: Propagation of action potential leads to the depolarization of neuron.

Q: explain the effect when myelin sheath in axon is damaged.

A: Introduction: Neurons (also called neurons or nerve cells) are the basic units of the brain and…

Q: Describe the series of event that occurs as an electrical signal in the presynaptic neuron is…

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

Q: TRUE OR FALSE? Do translatory conduction involves the entire length of the axon in the propagation…

A: TRUE OR FALSE? Do translatory conduction involves the entire length of the axon in the propagation…

Q: Describe how an action potential is generated in a neuro

A: The nervous system comprises organs and tissues made up of neurons (nerve cells). Nervous system is…

Q: In chemical synapses, neurons communicate with other neurons or skeletal muscles via…

A: Following are the steps in the neurotransmission in chemical synapses :- 1) synthesis of…

Q: Summation means that a post-synaptic neuron only has an action potential if:     there are no…

A: The neurons have the capability of generating and transmitting electrical impulses throughout the…

Q: a channel can be gated mechanically, voltage or by a ligand. When you hear a sound all three of…

A: Ligand-gated channels have a significantly enhanced permeability when a chemical ligand attaches to…

Q: describe how the membrane potential varies over time AND distance as a graded potential move across…

A: All cells have a membrane potential which is known as electric membrane potential. The active…

Q: Select the correct term or phrase from the drop- down for each blank to complete the correct…

A: Generation of now impulse in naap fibres depends on distribution of sodium and potassium in and out…

Q: Which results in more action potentials in neuron D, stimulation by only A or B or C? Explain

A: In order to transmit signal from origin to its destination, many neurons are required and these…

Q: Distinguish between insulation by oligodendrocyte or Schwann cells. Relate myelination to signal…

A: Glial cells are the cells supporting the central as well as peripheral nervous system functions.…

Q: How does an action potential differ from a local potential?How do depolarizing and hyperpolarizing…

A: Nerve cells conduct electrical impulses to bring out a certain biochemical reaction. When a sudden…

Q: On this motor neuron, Add in and label: dendritic spines an axon collateral, with axon terminals…

A: Neuron: The core component of the nervous system is neurons which include the brain, spinal cord,…

Q: You have a photoreceptor cell in a dish. You are recording its membrane potential while flashing…

A: Answer :- Option (B) is correct. - The cell depolarizes, with brighter light causing more…

Q: Provide a microscopic picture of a "typical neuron" that shows the soma, dendrites, axon, axon…

A: Neurons or nerve cells possess electrical excitability, the ability to respond to a stimulus and…

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

A: Neurons (also known as neurones or nerve cells) are the basic units of the brain and nervous system.…

Q: What are the two kinds of postsynaptic potentials

A: Synapse is a joint in which two neurons are in contact with each other and easy transfer of impulse…

Q: Compare and contrast EPSPs, IPSPs, and action potentials Include the following information:…

A: The nervous system uses many types of electrical signals to communicate. These signals can be…

Q: What different types of epithelial cells are found in the gastrointestinal tract and how do they…

A: The epithelial cells can be described as the cells found on the surface of different organs in the…