The transmission of action potentials down a myelinated axon is faster but "saltatory" because of which of the following?   A. the passive transmission of action potentials is faster but degrades the action potential   B. voltage-gated sodium channels are only found in the Nodes of Ranvier   C. active transmission of action potentials does not degrade the action potential but is slow   D. A and C are correct   E. all of the above are correct

Q: Transmission of the nerve signal across a synapse is accomplishedby thea. movement of Na+ and K+.b.…

A: Introduction  Neuron/Nerve: A neuron is a single nerve cell which consists of central cell body,…

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: During a typical action potential in a nerve, which of the following is happening?  Multiple…

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

Q: When a neuron is stimulated, sodium moves into the cell, causing the inside of the neuron to…

A: Neurons are the functional and structural units of the nervous system. These cells are capable of…

Q: Charge from depolarization along the axon reaches the axon terminal, but there is a lack of…

A: Neurotransmitters can be defined as a chemical molecules that are involved in the transmission of…

Q: A perturbation that alters the membrane potential at a site on a neuronal axon will pass to…

A: Ion transport through ion gated channels is an example of passive transport because energy is not…

Q: Define the term congestive heart failure?

A: The symptoms of Congestive Heart Failure includes the following: Irregular heart beat Fatigue Chest…

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: What do multiple sclerosis and ALS (amyotropic lateral sclerosis) have in common?a. They both are…

A: The nervous system is a complex system of nerves and specialised cells known as neurons. The nervous…

Q: What guarantees that there are unidirectional action potentials? Choice A threshold  B.…

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

Q: Schwann cells are a type of glial cell found in the nervous system. In addition to the conduction of…

A: Neurilemma is also known as sheath of Schwann is the outermost nucleated cytoplasmic layer of…

Q: Schwann cells are a type of glial cell found in the nervous system. In addition to the conduction of…

A: Schwann cells are the major glial cells found in the peripheral nervous system (PNS). They provide…

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: The pressure in the veins sufficiently high to drive the flow of blood into the heart is callec O…

A: The heart is a fist-sized organ that pumps the blood throughout the body. It is the primary organ of…

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: This graph shows the relative voltage of a neuron's cytoplasm near the plasma membrane relative to…

A: * There are three stages in membrane potential  Depolarization  Repolarization Hyperpolarisation…

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 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: ne: hey insulate portsi of the neuron axon but not the cell body and dendrites. ney increase the…

A: Myelin sheath  is the covering around the nerve cells. It is very important as various diseases may…

Q: Which of the following is true of graded potentials? a. They always reach the same voltage o b. They…

A: Neurons are the basic structures and functional units of the nervous system. The axon or the nerve…

Q: I. These forms the specialized junctions called synapse. A. Cell body B. Glial cells C. Synaptic…

A: Introduction :- The point of transmission of electric nerve impulses between two nerve cells…

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: 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: Which of the following is/are found only in the PNS? a. Nerves b. Astrocytes с. Мyelin d. Lipofuscin…

A: Peripheral nervous system comprises all the nervous tissue outside the central nervous system. There…

Q: Small gaps in the myelin sheath where the axon is exposed to the extracellular environment are…

A: The structural and functional units of the nervous system which are capable of sending and receiving…

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: 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: 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 statements regarding polarized membranes is incorrect? a. There is a…

A: At rest, the ionic composition of the interior and outside of a neuronal membrane varies. As a…

Q: Relatively high velocity (speed) action potential propagation is a feature of axons that have which…

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

Q: Neurotransmitters are released from neurons due to the opening of ____________. Select one: a.…

A: Neuron is the sub unit of nervous system. It helps in coordinating the different body parts via…

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: An animal is exposed to a plant toxin that breaks open synaptic vesicles in dopamine, serotonin, and…

A: Synaptic transmission refers to the process in which the neuron transmits information to the next…

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: Which of the following is the plateau stage of the action potential? A. Phase 0 B. Phase 1 C. Phase…

A: The heart is an excitable organ which can spontaneously generate action potentials. There are three…

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.