Explain why alterations in potassium concentrations have more powerful effects on membrane resting potentials than alterations in sodium ions

Q: Na+, K+, and Ca2+ curr

A: Driving force refers to the difference between the actual membrane potential and an ion's…

Q: Which of the following is the most important contributor to the difference between the resting…

A: A membrane's voltage varies rapidly in a series known as action potentials.

Q: a cell with the following ion concentrations had a resting membrane potential of -40mV which of the…

A: Cell membrane is selectively permeable to some specific ions.

Q: In certain diseases, such as kidney failure, the Na+ concentration in thebody’s extracellular fluid…

A: Kidneys are vital for maintaining the balance of nutrients and minerals in the blood plasma. Renal…

Q: Which factors determine the resting membrane potential? Explain why the resting membrane potential…

A: An action potential is a phenomena that happens when the voltage of a membrane rapidly increases and…

Q: Describe how the magnitude and polarity of the sodium and potassium membrane currents vary with the…

A: The activation of a neuron or muscle fiber is mediated through the modulation of its membrane…

Q: What is the expected resting membrane potential (in mV) of a neuron that is typical in all ways…

A: The membrane potential is a term that signifies the distribution of opposite charges across the…

Q: What kind of graded potential describes a change in membrane potential from  70 to  60 mV? From  70…

A: The membrane potential is the difference between the two electric potentials the interior and the…

Q: What must be reached in order for voltage-gated sodium ion channels to open?

A: Action potentials induced when different ions travel the neuron membrane. A stimulus first affects…

Q: Explain why the inside of the membrane changes form a jet negative charge to a positive charge at…

A: Whenever a nerve impulse is communicates from a cell body, the sodium directs the cell membrane open…

Q: The figure below may help in answering some of the questions. 1. What ions are flowing (and in which…

A: The neurons are the cells of nervous system that is responsible for generation and transmission of…

Q: Describe the potassium and sodium equilibrium potentials.

A: The equilibrium potential refers to the electrical potential difference across the cell membrane…

Q: Define the term mechanically gated ion channels?

A: Ion channels are formed by multiple individual protein that makes a path for charged ions from…

Q: At the peak of an action potential, would the relative permeability of Na be higher than K? Which…

A: Generation of nerve impulse in nerve  fibres depends upon distribution of sodium and potassium in…

Q: What is the driving force (in mV) acting on Sodium flow at the peak of the Action Potential in a…

A: The nervous system of a human being is a complex system that helps to coordinate behavior and to…

Q: Given that tissue A has significantly more K+ leak ion channels thantissue B, which tissue has the…

A: Resting membrane potential is considered a product of the ion distribution across the membrane and…

Q: High Potassium can cause the symptoms seen in hyperkalemia. What about low potassium, known as…

A: Hypokalemia is a condition characterized by decreased levels of potassium ions in blood. The normal…

Q: Indicate zero membrane potential, resting membrane potential, and threshold potential; indicate when…

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

Q: explain the difference between a ligand gated and voltage gated ion channel

A: Cell signaling begins with the interception of a signal or stimulus by a receptor molecule. The…

Q: a. If one increased the extracellular concentration of K+ around a neuron, what would happen to the…

A: Resting membrane potential is negative because the negative charge is present inside the cell which…

Q: Upon reaching electrical threshold, which of the following ion channels will open? Leak K+…

A: Neurons or nerve cells are the units of the nervous system. The parts of a neuron are dendrites,…

Q: is to say, the excitatory pathways become over ive, or the inhibitory pathways, esigned to temper…

A: Normally neuron has a resting membrane potential of about -70 millivolt. When an action potential…

Q: What is the membrane threshold and describe its role with grade potential's in action potential's

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

Q: Explain the flow of ions in mechanically-gated ion channels.

A: Mechanically Gated Ion-Channels:- Ionic channels can be of three types: 1. Voltage-gated ion…

Q: Describe the flow of ions in these cells in action potentials - skeletal muscle - neuron

A: The nervous system establishes its function by means of neurons or nerve cells that aid in the…

Q: Describe how resting potential is achieved and what ions are involved in it and what side of the…

A: The plasma membrane of a cell is selectively permeable as it tends to permit the transfer of…

Q: factors responsible for a negative resting membrane potential include: check all that apply:   a.…

A: We can say that The negative resting membrane potential of a cell is the membrane potential that is…

Q: Discuss the importance of the sodium-potassium pump in the establishment of resting potentials and…

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

Q: During extreme dehydration, plasma K* can increase to as high as 10 mM. (A) What would the membrane…

A: Introduction  When you use or lose more fluid than you consume, your body becomes dehydrated because…

Q: List the Forces influencing sodium and potassium ions at the resting membrane potential?

A: The voltage across a cell membrane during the resting stage is known as the resting membrane…

Q: Consider the brain and spinal neurons. If you bathed a resting neuron with an excess of potassium…

A: The brain and spinal cord neurons are responsible for transmitting electrical signals throughout the…

Q: Describe leak ion channels and gated ion channels. Howare they responsible for the permeability of a…

A: Ion channels may be classified by gating, i.e. what opens and closes the channels. For example,…

Q: State

A: Action potential:- The change in electrical potential associated with the passage of an impulse…

Q: There are differences in Na+, K+, and Cl- ion concentrations across the membrane.  Knowing that ions…

A: Neurons are known to generate electrical signals when the permeability of the cell membrane is…

Q: Explain how the changes in Na+ and K+ ion concentrationsthat occur during an action potential are…

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

Q: What is the difference between inactivate  and closed Na+ channels?Explain how a salty flavor is…

A: Sodium channels are the proteins found in the plasma membrane of a cell that forms an ions channel…