If the membrane potential at the axon hillock becomes subthreshold, an action potential will be fired.   True  or false

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: Oligodendrocyte Neurlemma Reset Zoom Schwann cell Basal lamina Nucleus Dendrite Endoneurium…

A: Neurons are nerve cells specialized in conducting nerve impulses in response to stimuli from the…

Q: Describe how graded potentials can lead to an action potential (temporal summation and spatial…

A: The measurable brain reaction to a given sensory, cognitive, or motor event is known as an…

Q: Use Figure Q1(b) of an action potential to answer questions (i) until (iv) below. Choose the correct…

A: The neurons have the capability of generating and transmitting nerve impulses throughout the body.…

Q: Describe the product of an action potential.

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

Q: Describe saltatory conduction of an action potential

A: Action potentials are typically electrical signals, which serves to transmit a signal or message…

Q: action potentials develop at the initial segment of the axon because

A: The neuron is the basic working unit of the brain, a specialized cell designed to transmit…

Q: Explain how action potentials move down an axon.

A: An action potential is defined as a fast, transitory propagating sudden change in the resting…

Q: Explain how action potentials are conducted by an unmyelinated axon.

A: Neurons are the basic unit of the nervous system that carry electrical stimuli throughout the body.…

Q: Describe the difference between graded and action potentials.

A: Graded potentials are caused by external stimuli (in sensory neurons) or by neurotransmitters…

Q: Explain why a myelin sheath covering an entire axon (with no nodes of Ranvier) would inhibit…

A: The insulating layer, which forms a covering around the nerves, is called the myelin sheath. The…

Q: When ionotropic receptors allow the influx of ions, the postsynaptic cell depolarizes. When they…

A: The neurons are the cells of nervous system that has the conducting capability. The nerve impulse…

Q: At __________ synapses, neurotransmitters hyperpolarize the membrane, by making it more permeable to…

A: The synapse is the connection between two neurons. In case of chemical synapse neurotransmitters are…

Q: Tetrodotoxin is a poison that prevents voltage-gated channels from opening. Would this toxin prevent…

A: Tetrodotoxin is a potential neurotoxin which is extremely poisonous and can be found in the liver…

Q: Explain how myelination of the axon results in saltatory conduction, and how this increases the…

A: Neurons are the basic umit of the nervous system and helps in control qnd coordination.

Q: Explain the relationship between threshold potential and an action potential.

A: An action potential can be defined as the phenomenon when there occurs at excitation of the nerve or…

Q: Tru or

A: There is release of neurotransmitters by the inhibitory pre synaptic neurons that bind to the post…

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: Explain why the strength of an action potential doesn’t decrease as it travels down an axon.

A: Action potential involves a transient change in the potential of a neuronal membrane that is caused…

Q: Why is the cell unable to initiate another action potential if stimulated during the refractory…

A: The time between two consecutive action potentials is called refractory period. Action potential…

Q: what would happen to the action potential if the potassium channels opened before the sodium channel

A: Neurons and muscles have cells that generate an action potential in response to stimuli. These are…

Q: Define the refractory period in the propagation of action potential in two sentences. Give its…

A: Introduction: The brief cascade of events in the membrane potential after excitation is termed…

Q: Describe how an Action Potential is conducted.

A: The body has a network of conductive cells known as neurons. The neurons are connected end to end,…

Q: Local potentials are graded

A:

Q: Describe the events that lead to the generation of an action potential.

A: Action potential generation is when a neuron rapidly depolarizes from a negative resting potential…

Q: Describe how ion movement generates the action potential.

A: Action potentials can be defined as the nerve signals which are characterized by the sudden, fast,…

Q: Describe what happens in the nerve terminal when an action potential reaches there

A: Neuron or nerve cells are cells that act as messengers, they are able to undergo  electrical…

Q: Describe the characteristics of action potentials and explain how they are conducted by unmyelinated…

A: The minimum electrical potential required to do a muscle contraction or any action is called action…

Q: Neurotransmitter binding to the receptor is transient andreversible. True or false?

A: In human physiology, neurotransmitters are defined as the chemical compound or substances of the…

Q: the refractory period limits the number of action .2 potentials that a given nerve cell can produce…

A: The neurons communicate with each other by generating action potentials. An action potential is…

Q: Explain what will happen in an axon undergoing an action potential but which  is unable to utilize…

A: The action potential of a neuron causes the depolarization of its membrane. The resting potential of…

Q: Describe the role of the axon hillock in generating action potentials.

A: Axon hillock can be defined as a specialized part of the cell body. It serves to connect to the axon…

Q: Why is saltatory conduction along a myelinated axon faster than continuous conduction along an…

A: The cell body comprises the nucleus and other cell organelles. Dendrites expand from the cell body…

Q: The speed of action potential propagation and synaptic transmissiondecreases with aging. List…

A: Ageing is a natural process that leads to several structural (such as decreased elasticity of the…

Q: If the middle of an axon were depolarized to threshold, in which direction could the action…

A: Neurons are the basic unit of the nervous system. They are involved in the transmission of nerve…

Q: Describe how depolarization occurs along an unmyelinated neuronal axon

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