what would happen if the calcium ion channels in the axon terminal were blocked

Q: Heroin mimics the actions of endorphins, inhibiting pain signals and creating a “high” feeling.…

A: Introduction: Heroin is made from morphine which is a highly potent pain killer that occurs…

Q: Explain the role of neurotransmitters in the transmission ofa nerve impulse across a synapse.

A: There are two divisions of the nervous system. The central nervous system includes the brain and the…

Q: Contrast the two types of summation at a synapse and explain how they function in synaptic decision…

A: Sensory neurons also make synaptic connections in the spinal cord with another type of neuron called…

Q: What effect could the venom have on a voltage-gated potassium channel to produce this result

A: Scorpion is venomous reptile which is found all around the globe with different species but black…

Q: To maintain ________ action potentials are sent through ______ neurons.

A: Introduction  The fast rise and fall of the membrane potential at a particular cell site is known as…

Q: Which best describes the process by which rod cells are activated? light strikes a rod cell at…

A: Rod cells are photoreceptor cells in the retina of the eye that perform better in low light than…

Q: At the axon terminus, gates for a new ion open. What is the ion and which direction does it flow…

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

Q: Why are action potentials usually conducted in one direction?(A) Ions can flow along the axon in…

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

Q: a)Explain how the presynaptic cell "knows" when to release its neurotransmitter into the synaptic…

A: Neurotransmitters are often referred to as the body’s chemical messengers. They are the molecules…

Q: A neurotransmitter called "GABA" decreases the rate of action potential generation in neurons, but…

A: Alcohol binds to the GABA receptor and it decreases the generation of the rate of the action…

Q: Neurotransmitters are released by_____ . a. axon terminals c. dendrites b. a neuron cell body d.…

A:

Q: Which of the following evolutionary adaptations would result in an increase in the speed of…

A: "The nervous system" of all animals is made up of unique cells known as neurons, which serve as the…

Q: Select ALL statements that are TRUE regarding a drug that would inactivate the enzyme…

A: A drug that inactivates the enzyme called acetylcholinesterase is known as Acetylcholinesterase…

Q: Compare the signal conduction speed in myelinated fibers versus unmyelinated ones. Why aren’t all…

A: Ans: Myelination: In this process the fatty sheath which surrounds neuronal process as well as…

Q: Which is not true about axons? They arise from the cell body they send information to other cells…

A: The control and coordination of the body are carried out by the nervous and hormonal systems. The…

Q: The ____________  is a period of time in which a neuron is producing an action potential and cannot…

A: Introduction  Nerves play vital role in conduction of signals from CNS to various other organs,…

Q: When the action potential begins, Na+ gates open, allowing Na+ to cross the membrane. The charge…

A: Membranes potential can be defined as the change in electric potential due to changes in the amount…

Q: Choose a medication that acts as either an agonist or antagonist. Name of medication, the receptor…

A: Since, the situation for the agonist and antagonist drugs is not mentioned in the question. Let us…

Q: Describe the difference between electrical and chemical synapses. How are neurotransmitters…

A: Neurons and nerve impulse The nervous system is composed of many small structural units called the…

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: At which point in the graph do voltage-gated potassium channels open? (Base your answer to this…

A: The action potential refers to the sudden changes in the resting membrane potential of the neuron…

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: Indicate where chemically-regulated gated sodium channels are found on the neuron and how they…

A: The body of humans consists of a number of systems that work together to maintain the homeostasis of…

Q: Explain how myelin helps speed up the conduction speed of action potentials along the axon of the…

A:

Q: What would happen to an insect if you treated an insect with a chemical that inhibits…

A: Acetylcholinesterase Inhibitors:  Acetylcholinesterase inhibitors (AChEIs), also known as…

Q: Name a neurotransmitter stored at the terminal end of the axon.

A: The nervous system of an organism is quite complex network that is responsible for coordinating…

Q: Identify the role of potassium in the propagation of an action potential and predict how a severe…

A: Messages are sent by neurons electrochemically i.e., electrical signals are produced by the signals.…

Q: Use this illustration to place these events in the order they occur during synaptic communication:…

A: The above image shows the transmission of nerve impulses across a synapse. A synapse is a small…

Q: if you were to develop a drug that target calcium channels to treat epilepsy, would the drug be  an…

A: Epilepsy is a paroxysmal event characterised by abnormal, excessive synchronous neuronal discharges.…

Q: Give an example of a drug that acts as an agonist for acetylcholine receptors and one that acts as…

A: An agonist is a molecule or drug that mimics the actual substrate and helps in activating the…

Q: Describe the 6 step sequence of events that occurs at the NMJ in response to a nerve Action…

A: Steps:- The sarcolemma initiates the action potential. 2)The axon terminal receives the action…

Q: Subject: Neurophysiology  Batrachotoxin OPENS Na+ channels.  If this is added to a bath solution in…

A: The membrane potential is a minor differential in electrical charge that exists across the cell…

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

A: Neurons are responsible for the electromagnetic conduction of the signals in the form of stimulus.…

Q: ) How does E allow faster transmission of signals?  b) What would happen if G has a lack of…

A: Transmission of signal means transmission of nerve impulsebin  nerve fibre. Generation of nerve…

Q: Use Figure Q1(b) of an action potential to answer questions (1) until (iv) below. Choose the correct…

A: Nerve impulse refers to an electrical or chemical signal that is transmitted along  a fibre. The…

Q: What would be the purpose of giving a drug that stimulates dopamine receptors to a stroke patient?…

A: Dopamine is a major neurotransmitter that is involved in brain sensorimotor functions. Stroke is an…

Q: Compare/Contrast the somatic nervous system to the autonomic nervous system in terms of function &…

A: The nervous system controls and coordinates all the activities of the animals. It is classified into…

Q: A biologist finds that a post-neuron responds to a pre-neuron’s AP in a mammal through a cell…

A: The human brain alone contain over 100 billion neurons. Each neutron can have up to 10000…

Q: Imagine there is a toxin that blocks voltage-gated calcium channels (there probably is). How would…

A: Nerve impulses are transmitted from one neuron to the next neuron by the process of synaptic…

Q: Albert accidentally ingests the poison tetrodotoxin from the pufferfish, which you know blocks…

A: Tetrodotoxin is one of the most dangerous natural poison found on earth. It is a neurotoxin meaning…

Q: Draw a neuron then use the different documents of the activity to determine on the figure the…

A: The structure of neurons: Nerve cells or neurons are the structural and functional units of the…

Q: Post-synaptic acetylcholine receptors are blocked by   A.Calcium ions B.Atropine  C.Nerve gases…

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

Osmosis

In simple words, osmosis is the slow, gradual movement of a liquid through a membrane. But there are nuances to this process. For instance, there has to be an imbalance in the distribution of solute in the liquid on either side of the membrane, which has to be semipermeable. The liquid in the region with a lower solute concentration moves to the region with a higher concentration, thereby displacing the solution in the process. The objective is to equalize the concentration of molecules on both sides of the membrane; the displacement of liquid can be viewed as a byproduct of this equalization. Since there is no energy required to carry osmosis, it is considered a passive process.