In myelinated axons where are the most Na+ channels found?

Q: If a pre-synaptic cell releases a large amount of excitatory neurotransmitter into the synaptic…

A: Neurons are excitable cells that are specialized to carry electrical signals, often across long…

Q: How does myelination differ between the CNS and the PNS?

A: Nervous system involves a series of networks of sensory receptors that provides information about…

Q: Why are impulses transmitted more quickly down a myelinated axon than down an unmyelinated axon?

A: A neuron with myelin sheath can conduct impulse faster than the neurons which are without the myelin…

Q: Sometimes diverging circuits split into excitatory and inhibitory paths. When might such a circuit…

A: Neural Circuits The synaptic connection has different patterns between neuronal pools. They are…

Q: Compare impulse conduction in myelinated andunmyelinated neurons.

A: Neuron -- Neurons are electrically excitable cells in the human bodies that communicate with other…

Q: Define the terms Myelinization and saltatory conduction of action potentials?

A: Myelination and salutatory conduction have a strong effect on the action potential. It is studied…

Q: What are the PNS neurones/ CNS efferent neurones split into?

A: Neurons can be defined as the form of a cell that plays the role in transmitting the information in…

Q: What is the function of themyelin sheath? Do all axonspresent a myelin sheath?

A: The insulating covering around the nerve cell is termed as the myelin sheath. The myelin sheath is…

Q: If all the Ca2+ in the fluid surrounding a neuron were removed, how would this affect the…

A: Action potentials coming at synaptic knobs enhance the release of neurotransmitter into the synaptic…

Q: Which type of channels are found more prominently at the axon initial complex? Which ones found in…

A: Neurons also known as nerve cells, send and receive signals from brain.The nerve cell consists of…

Q: Describe how gating of Na+ and K+ in the axon membrane results in the production of an action…

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

Q: What is the conduction velocity of the action potentil in a myelinated axon of the nerve cell?

A: The conduction velocity is the speed in which electrochemical impulse propagates down a neural…

Q: f the absolute refractory period of a neuron is 0.7 milliseconds, what is the maximum frequency of…

A: The trick used by the nervous system is that the intensity of the stimulus is encoded into the…

Q: How do Schwann cells and oligodendrocytes differ with respect to the number of axons they myelinate?

A: There are two types of myelinating cells present in our nervous system: Schwann cells also known as…

Q: Describe how the permeability of the axon membrane to Na+ and K+ is regulated and how changes in…

A: Introduction  Sodium and Potassium are the two most important ions which plays a crucial role in…

Q: If postsynaptic membrane permeability is increased, is theneuron more easily stimulated or less…

A: The permeability of a cell refers to the transportation of ions that occurs through the cell…

Q: How is saltatory conduction different from continuous conduction?

A: The neuron is the brain’ basic functional unit. It is a specialized cell and is designed to transfer…

Q: How do ion channels and sodium-potassium pumps contribute to the resting potential?

A: Ion channels are pore forming membrane proteins that allow ion to pass through the channel pore.…

Q: What is the role of Efferent neurons?

A: Efferent neurons send signals from the brain to the muscles, glands and organs of the body in…

Q: If sodium and potassium ions are both positively charged, what causes the negative membrane…

A: Resting membrane potential is defined as the difference in the electric potential across the plasma…

Q: Describe how following a threshold stimulus, a action potential is carried along an unmyelinated…

A: Myelination refers to the presence of a myelin sheath on the axons. Myelin sheath is composed of…

Q: Contrast continuous conduction with saltatory conduction.

A: Nerve impluse if conducted in two ways- 1. Propagation along an unmyelinated axon is referred to as…

Q: What is the functional advantage of myelination?

A: The neuron or nerve cell is the fundamental unit of the nervous system. This is divided into three…

Q: Explain why a nerve impulse travels more quicklydown a myelinated axon than down an…

A: Neurons are electrically excitable cells and these communicate with other cells through specialized…

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

A:

Q: Immediately after an action potential has peaked, which cellular gates open? O calcium Ochloride O…

A:

Q: Which component of the neuron sends action potentials away from the cell body?

A: A neuron is a building block of the nervous system. There are millions of neurons present in our…

Q: Describe saltatory nerve conduction

A: The neurons are the basic fundamental units of the nervous system and also known as nerve cells.…

Q: Why are chemically- sensitive gated channels associated with receptors at the synapse and…

A: The potential gradient that helps the movement of the ions is known as Membrane Potential. Membrane…

Q: Once an EPSP is produced in a dendrite, how does it stimulate the production of an action potential…

A: An excitatory postsynaptic potential in short ESEP is a modification in the post-synaptic cell’s…

Q: How does conduction along a myelinated fiber differ from conduction along an un-myelinated fiber?

A: Myelin is a substance which is rich in lipids and surrounds the nerve cell axons in order to…

Q: Explain the cocept of Myelin Sheath ?

A: All organisms are made of billion s of cells. All cells are like the bricks that organise to make up…

Q: Describe how the two phases of repolarization reset the neuronal axon to be depolarized again

A: Repolarization is a phase of an activity potential where the cell experince an abatement of voltage…

Q: How does synaptictransmission between neuronstake place?

A: The neurons are the basic component of the nervous system. The neurons also are known as nerve cells…

Q: Distinguish between afferent neurons and efferent neurons.

A: The nervous system is a complex of network of nerves and cells that carry messages to and from the…

Q: Does the refractory period limit the number of action potentials that a nerve cell can produce per…

A: Introduction :- The interval after an action potential is created during which the excitable cell is…

Q: What is saltatory conduction?

A: The communication within tissues occurs due to action potentials. Whenever there is a change in…

Q: Differentiate between Myelinated and non-myelinated axons.

A: The axon functions to transmit messages to different body parts such as muscles, other neurons,…

Q: Define refractory period, saltatory conduction, and synapticintegration.

A: The various activities of the body are coordinated by the functions of the nervous system. This…

Q: Differentiate between excitatory postsynaptic potential EPSP and inhibitory postsynaptic potential…

A: The postsynaptic mechanism is referred to as the transportation and conduction of impulses in the…

Q: How does myelin aid propagation of an action potential along an axon? How do the nodes of Ranvier…

A: Action potential refers to a change in the membrane potential of the nerve cells by opening and…

Q: Distinguish between the myelination process carried out by neurolemmocytes in the PNS and by…

A: The nervous system of humans is generally classified into the central and peripheral nervous…

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.