What guarantees that there are unidirectional action potential? A. threshold B. depolarization refractory period  C. absolute refractory period D. relative refractory period

Q: Explain how axon diameter and myelination affect conduction velocity.?

A: Axon is a slender long projection of a neuron or nerve cell. It conducts the electrical impulses…

Q: Although one pinch did not cause a dog to flex its leg, several simultaneous pinches at nearby…

A: The brain is the organ that is Central to the nervous system. The nerves throughout our body carries…

Q: all of the following phrases decribe the same phenomenon except for one: a. action potential b.…

A: Introduction:- The skeletal muscles support the bones to maintain posture and control voluntary…

Q: any choice: What would happen if there were an inactivating mutation in voltage-gated sodium…

A: Pain is a serious medical problem. Pain sensations typically originate in peripheral neurons known…

Q: The Na+/K+ ATPase pump is a. not required for action potential firing. b. important for…

A: Introduction  Chloride is the most abundant anion in the extracellular fluid. Along with Chloride…

Q: For a second action potential to be fired an ......threshold must be reached......... the absolute…

A: An “action potential” occurs when the neuron is sending down an axon. It is an “explosion of…

Q: A neuron without an axon would be unable to     a. conduct nerve impulses     b. divide     c.…

A: A neuron is a structural and functional unit of the nervous system. It is capable of perceiving any…

Q: Another name for the axon of a neuron is:- a. nerve fiber. b. neurofibril. c. neurilemma. d.…

A: Answer- Neuron is the main cell of the nervous system that helps in conduction of nerve impulses or…

Q: Where does saltatory conduction occur? Select one: a. From node to node in unmyelinated fibers b.…

A: saltatory conduction in normal term means propagation/movement of action potential from one node of…

Q: During repolarization a  potassium ions (K* ) flow into the neuron. b  potassium ions (K* ) flow…

A: The response that our body gives to any external stimuli is due to the transfer of impulse from the…

Q: increases the probability of producing an action potential, where a ________ decreases the…

A: Depolarization increases the probability of producing an action potential, where a hyperpolarization…

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 change in the voltage across a neuron’s plasma membranethat makes the neuron less likely to fire…

A: The neuron is the structural and functional unit of the nervous system. The neuron is also known as…

Q: When a neuron’s resting potential is occurring, the neuron is __________ charged on the inside. a.…

A: Neuron is a cell present in the nervous system that is accountable for receiving and transmitting…

Q: A subthreshold stimulusa. produces an afterpotential.b. produces a graded potential.c. causes an…

A: A neuron sends information down their axon to another neuron or other cells and communicates with a…

Q: Motor neurons and interneurons are neurons.a. pseudo-unipolar c. multipolarb. bipolar d. afferent

A: Since neurons relay signals between the brain and tissues and regulate their movement or behavior,…

Q: 32) In order for a nerve impulse to be transmitted across a synapse, a neurotransmitter must be…

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Explain the propagation of an action potential. 1. Start with a stimulus 2. Follow through two…

A: An action potential is a brief electrical signal that is transmitted along the membrane of a neuron…

Q: In signal transduction in the dark, the cGMP plays what role? a. It promotes an action potential…

A: Cyclic GMP (cGMP) is "Guanosine monophosphate" in which the phosphate group is covalently linked to…

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: During the Refractory period of the action potential, the neuron will: Select one: O a. Not respond…

A: Nerve cells or neurons are excitable cells of nervous system. A typical neuron consists of cell body…

Q: Explain the difference between the relative and absolute refractory periods. Briefly describe the…

A: A voluntary muscle fibre contracts when threshold stimulus (optimum stimulus that could generate a…

Q: The two primary factors that influence the speed of an action potential propagation are axon…

A: The nervous system is an exceptionally complex piece of a creature that arranges its activities and…

Q: In a resting neuron, which of the forces listed below will act to push sodium (Na+) ions into the…

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

Q: Each of the following is a correct relationship between action potential phase and channel status…

A: BASIC INFORMATION NEURON   It is the longest cell inside the human body  It is found in the brain…

Q: At an electrical synapse, presynaptic and postsynapticmembranes interface througha. neurofibril…

A: Gap junctions

Q: Which of the following changes to an action potential indicates a larger stimulus?  a. Increased…

A: Action potential takes place when the membrane potential of a particular cell location increase and…

Q: Myelinated and unmyelinated neurons requires _________ to propagate action potential down the axon.…

A: Neurons are the electrically excitable cell in our body which communicate with the other cell by a…

Q: A synapse is:   a. a gap between neurons   b. crossed by a chemical   c. separates the axon end…

A: the microscopic gap present between terminal end of axon of one neurone and dendron or axon or cell…

Q: why schwann cells affect the speed of an action potential?

A: Schwann cells is defined as the glial cells that are either myelinated or non-myelinated and aids in…

Q: The rate of information transmission from the central nervous system (CNS) to an effector organ will…

A: Nerve impulses or action potentials are electrical signals that travel along the length of a neuron.…

Q: What is/are true statements about Action Potentials? Select all that apply. Group of answer…

A: Action potential is a rapid rise and fall in voltage or membrane potential across cell membrane.…

Q: Select one: O A. hyperpolarizing phase; K channels open B. hyperpolarizing phase: Na channels open…

A: The action potential is the change in the electric potential across the plasma membrane.

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.