Which of the following is a correct statement of the all-or-none principle? Select one: U a. A hyperpolarized membrane always results in the production of an action potential b. When a stimulus is applied, it triggers an action potential in the membrane O C. Action potentials occur in all neurons if a stimulus is applied that lowers the membrane potential d. A given stimulus either triggers a typical action potential or does not produce one at all

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: Match the description with the statement that best describes the following regions e dendrites +…

A: Neuron:

Q: The exocytosis of the synaptic vesicles depends on:

A: Synapse is the junction between two neurons. It is formed between the dendrites of one neuron and…

Q: You are recording the electrical activity of a cell body with a resting membrane potential of -70…

A: Given; Resting membrane potential of the cell= -70mV No. of stimuli detected by the cell= 3 from…

Q: Action potentials are normally initiated at the axon hillock because a. there is a particularly high…

A: When the membrane potential of a given cell location rapidly rises and falls, an action potential…

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: postsynaptic potential (EPSP) in it. O D. bind to neurotransmitter receptors on the postsynaptic…

A: Synapse is the area of the junction between the two Nerve cells in which the first nerve cell from…

Q: Which of the following is NOT an example of communication that happens from one neuron to another…

A: Answer: - Option a - Endocrine signalling (ex. hormones secreted into the bloodstream travel and…

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: You apply a drug to a batch of neurons and record membrane potential changes in the presynaptic and…

A: Ans: Chloride (Cl- )

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: atch the description with the statement that best describes the following statements…

A: When a cell is not stimulated, its resting membrane potential is defined as the electrical potential…

Q: Select one: a. increased amount of ATP b. movement of chlorine down its concentration gradient c.…

A: Introduction  Information is transmitted via neurons. They communicate between various brain regions…

Q: Action potential conduction velocity is more rapid in a myelinated axon than an unmyelinated one…

A: The myelinated and unmyelinated nerve fibers are the two types of nerve fibers.  Myelin is a fatty…

Q: At a chemical synapse, an action potential triggers an influx of Ca2+ which . Select one: O A.…

A: When the action potential reaches the presynaptic neuron terminal, it activates the voltage-gated…

Q: Which of the following would most likely occur if an electrical stimulus were applied at point C in…

A: The neurons have the capability to generate and propagate electrical impulses and it is known as…

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: Compare graded and action potentials in a typical neuron. At a minimum you should include a…

A: graded potential are variable strength signals that can be transmitted over short distance ; action…

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: Which of the following examples of synaptic integration is most likelyto lead to an action potential…

A: The cell that lies after the synapsis and receives the neurotransmitter from the presynaptic cell is…

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: In a chemical synapse,a. action potentials in the presynaptic terminal cause…

A: An electrical synapse can be described as a type of synapse that contains channel proteins…

Q: .dחaMa"in it the

A: The equilibrium potential is the particular membrane potential where the net flow through any open…

Q: Which of these terms is correctly matched with its definition ordescription?a. depolarization:…

A: The cell membrane has a membrane potential associated with it. The electric potential outside the…

Q: During the action potential, which of the following activity is LIKELY to occur? Select one: a. Na+…

A: An action potential (AP) occurs in physiology when the membrane potential of a given cell location…

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.

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: There is a type of toxin found in the liver of the puffer fish that prevents the opening of…

A: Introduction  The neurotoxin tetrodotoxin (TTX) is highly toxic. Its name is derived from the group…

Q: A patch-clamp device is used to a. Study the properties of individual neurotransmitters b. Study the…

A: A flexible electrophysiological method for analysing ion channel function is the patch-clamp method.…

Q: nsulate parts of the neuron axon but not the cell ba are fatty menmbranes. are formed by glial…

A: Myelin sheaths are fatty tissue coverings that protect nerve cells. These cells are part of your…

Q: Which of the following events correctly ranks steps in an action potential? 1. Voltage-gated sodium…

A: Electrical signals are how neurons communicate. Electrical signals are generated when there is a…

Q: List the membrane potential value that would coincide with the following events: a. Resting…

A: The neurons have the tendency to transmit the physical stimulus in the form of an electrical…

Q: Which of the following allows the cell to recover from hyperpolarization during an action potential?…

A: The transmission of signals across the different regions of the body occurs in the form of…

Q: of the following is true of axons?

A: Axons are the distal part of the neuron. There are two types of axons. The myelinated nerve fibres…

Q: You apply a drug to a batch of neurons and record membrane potential changes in the presynaptic and…

A: Here membrane potential raises from -70mv to - 55mv.  That means depolarization occurs.  At…

Q: Post synaptic neurons membrane potentials

A: Post synaptic neurons membrane potentials:These refer to the electrical charge difference across the…

Q: What causes the inside of a membrane to become positively charged during an action potential?

A: Answer: Action Potential : It is the rapid changes in the membrane potential of cell membrane. This…

Q: An inhibitory post synaptic potential is a membrane potential that:   A. Is slightly depoloarized…

A: Membrane potential can be defined as the type of potential gradient which is present across the cell…

Q: _________ summation occurs when multiple signals are arriving from _________ while _________…

A: Neurons are the structural and functional unit of the nervous system. These cells are specially…

Q: Which of the following are mechanisms of gustation transduction? Select one or more: a. Hydrogen…

A: GPCR receptor cells release certain neurotransmitters when some chemicals in ingested substances…

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.