factors responsible for a negative resting membrane potential include: check all that apply:   a. Na K pump  b. different carrier proteins  c. uneven distribution of ions  d. difference in permeability of ions  e. high potassium concentration in ECF

Q: Which of the following statements about membrane ion channels is incorrect? a. mechanically gated…

A: Ion channels are located in the membrane. They can be voltage-sensitive, ligand-gated, or…

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

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

Q: Voltage-gated sodium channels are open and allowing sodium to flow when: O The membrane is at the…

A: When the membrane potential of a particular cell site rapidly increases and decreases, an action…

Q: The resting membrane potential of a cell is the consequence of which of the following concentrations…

A: Introduction - The voltage across a cell membrane during its resting state is called the resting…

Q: Which of the following contribute(s) to the resting membrane potential?a. the relative leakiness of…

A: The neural system is composed of specialized cells. These cells are nerve cells (neurons). The…

Q: This patient's hypokalemia was due to his profuse sweating the previous day and the subsequent loss…

A: Potassium is a mineral, our body cells need this, it regulates our major body parts functions such…

Q: Which statement does the graph illustrate? Probability of Na channel opening 0.8 0.6 0.4 0.2 0 -80…

A: In membranes, the voltage-gated sodium channels and voltage-gated potassium channels are involved in…

Q: What happens to the sodium inside the cell once the action potential has passed down the axon.…

A: Normally the cell membrane remains negative inside in comparison to outside. This negative potential…

Q: Which of the following primarily reflects the opening of voltage-gated Na* channels? A. The resting…

A: Voltage-gated Na+ channels are gated, meaning that they can be opened or closed in response to…

Q: Voltage-gated Na+ channels are.... (select all that apply).  Group of answer choices: A. Opened by…

A: The channels are basically membrane proteins that act as transport protein through which various…

Q: Voltage-gated K+ channel senses voltage across the plasma membrane and  permits selective passage of…

A: A rapid and large changes in membrane potential of nerve cells during which the potential actually…

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: V=62 log 10 (C0/Ci ) for a positive ion at 37 degrees Celsius. What is theoretical ratio of solution…

A: Biological membranes are made up of phospholipids. The phospholipids' heads groups face the cell's…

Q: Describe the events that must occur to generate an AP. Relate the sequence of changes in…

A: The action potential is a quick increase and succeeding fall in membrane potential or voltage across…

Q: Calculate the equilibrium membrane potential for Na* for an extracellular fluid concentration of 138…

A: Membrane potential is ion is defined as the difference in electrical change across the cell…

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

A: All cells have an electrical potential difference or membrane potential across their plasma…

Q: eurons have a resting membrane potential of ___________________.   varying votage as type and…

A: The resting potential is mostly determined by the concentrations of the ions in the fluids on both…

Q: Hyperpolarization is defined as an increase in membrane potential toward zero.

A: Hyperpolarization occurs when the membrane potential becomes more negative at a particular spot on…

Q: Explain A Miniglossary of Terms Describing the Membrane Potential

A: The difference in electrical potential across the plasma membrane of the cells is referred to as…

Q: Ion channels can open or close based on electrochemcical gradient.

A: Ion channels are proteinaceous pathways that allow the passage of ions across a membrane at rates…

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: Describe the events that occur during action potential  ANSWER SHOULD INCLUDE: Explanation of how…

A: Action potential is defined as the sudden, fast, propagating change of resting membrane potential…

Q: During the depolarization phase of an action potential, the permeability of the plasma membrane toa.…

A: Depolarization influence the membrane to attain the threshold potential at which the nerve cell…

Q: The cleft is a flat disk between the two membranes, radius L= 250 nm and thickness d=20 nm. The…

A: Acetylcholine is a neurotransmitter that is responsible for the dilation of blood vessels,…

Q: Resting membrane potential:   a. Is due to difference in permeability of cell membrane to ions b.…

A: Resting membrane potential is necessary for the functioning of the neurons and the muscle cells. Any…

Q: Explain the conditions that give rise to the resting membrane potential.

A: Different organ systems work in a coordinated manner to maintain optimum body functioning. 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: Why is action potential considered an “all or nothing” event. (Short answer)

A: An action potential occurs when a neuron has reached a state in which an electrochemical stimulus is…

Q: How would a long-term diet completely lacking in salt affect the action potential process

A: An action potential is a self-regenerating wave of bioelectrical depolarization that travels along…

Q: The membrane potential across a cell membrane can be thought of as a "blend" or weighted average of…

A: The membrane potential can be described as a potential gradient that enables the unidirectional flow…

Q: Explain, how and why the cells swell up (or even burst) if their Na/K pumps stop working.

A: A transmembrane ATPase which is responsible for pumping sodium ions out of the cell and bringing…

Q: Describewhat role potassium plays in healthy, normal excitable cells. First, describe what potassium…

A: The resting membrane potential is the result of the development of a few diverse ion species through…

Q: Which of the following statements relating to depolarization is incorrect? a. it is a reduction in…

A: The central nervous system consists of numerous specialized cells called neurons. The neurons are…

Q: Calculate the driving force for Na+, K+, and Ca2+ current in a neuron under physiological…

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

Q: You attempt to generate an IV plot for GABA channels in cultured neurons. You apply pentobarbital…

A: GABA ( Gamma Amino Butyric Acid) is an inhibitory neurotransmitter secreted by our neurons to…

Q: Using the graph, you would need an EPSP of ________mv to get an AP every 6ms.

A: EPSP or excitatory postsynaptic potential is developed by the binding of neurotransmitter with the…

Q: Nicotinic ACh receptor (LGIC) involve the movement of what ion across the membrane? Group of answer…

A: Nicotinic Acetylcholine receptors are a type of ligand-gated ion channels involved in neuromuscular…

Q: What role does potassium play in the action potential process.

A: The action potential is caused when the membrane potential of a specific cell rises and falls. This…

Q: Explain action potential generation in terms of cell potential, ionic concentrations, movement of…

A: An action potential occurs in many cells of animals such as muscle cells, neurons, endocrine, and…

Q: On the graph above, when do the sodium ion channels close? Select one: a. between 0.2 ms and 0.5 ms,…

A: When the stimulus is provided, the Sodium ion VGIC's (Voltage-gated ion channel) move from resting…

Q: A. There is a lower resistance in the lower panel at the point where voltage is measured. B. There…

A: To identify: To identify the correct difference between the middle panel and the lower panel from…