Which of the following is true of graded potentials? a. They always reach the same voltage o b. They frequently occur in cardiac muscle cells O c. They can be either depolarizations or hyperpolarizations d. They never exceed the threshold O e. Both c and d

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: 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: QUESTION 9 What is the relationship between action potential conduction velocity and axonal…

A: Introduction :- The nervous system's ability to transmit information is constrained by the rate of…

Q: The trigger for an action potential is:

A: The potential difference across a membrane is known as the Membrane Potential. Frequent, rapid…

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: Some neurons have very long dendritic arbors. Scientists wanted to understand how synaptic currents…

A: The study of neuronal dendrites and their part in action potential generation is an interesting area…

Q: Which of the following is TRUE regarding the absolute and relative refractory periods of the action…

A: The relative refractory period is that the interval of your time throughout that a second action…

Q: Heurotransmitters and their respective receptors influence the propagation of action potentials. Why…

A: Hormones are defined as the type of chemical messengers that are directly released into the…

Q: Neurotransmitters released by pre-synaptic vessels are received by what type of proteins in the…

A: Neurotransmitters are chemical messengers that help to transmit neural signals from one neuron to…

Q: Which of the following describes the movement of the correct ion in the falling phase of the action…

A:

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: All of the following factors contribute to a polarized membrane EXCEPT which? a. Negative ions such…

A: Introduction: A difference in the charge across a membrane is referred to as polarization. Membrane…

Q: Which of the following is a correct statement of the all-or-none principle? Select one: U a. A…

A: The action potential is known to have full response always that means there is no concept of weak or…

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: Answers A-D A Current from neighboring regions can trigger a second action potential in phase 2 B…

A: Introduction  A transient voltage change (membrane potential) across the cell membrane of heart…

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: 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: Wriich of the lollowing thuices correctly ills in the blanks? During repolarization, the sodium ions…

A: The process of generation of action potential is a complex process and it involves three main phases…

Q: +30 0 -55- -70- -80- B A 2 3 Time (ms) G 2. A. What type of summation is shown for the graded…

A: Nerve impulse refers to an electrical or chemical signal that is transmitted along in a fibre. The…

Q: Which of the following situations correctly illustrates the all-or-none principle? Select one: a. A…

A: The magnitude of the action potential in any nerve fiber is independent of the strength of the…

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: The inward rectifier does not:   A. Conduct potassium.   B. Carry inward current during the action…

A: Ion channels are transmembrane proteins that can form pores for the passage of ions through the…

Q: A hyperpolarized cell can be generated when:   Group of answer choices A. ligand-gated ionotropic…

A: Introduction  Ionotropic receptors, also known as ligand-gated ion channels (LICs, LGIC), are a…

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: The is morphological difference between bipolar neurons and unipolar neurons and that determines how…

A: As you are reading this book, think about the organs that are functioning within you right now! Your…

Q: The strength of a stimulus is communicated to the Axon terminal button by_ of action potentials a.…

A: DISCLAIMER: Since you have asked multiple questions, we have solved the first question for you. If…

Q: 19. The resting potential is restored by A. Stimulation B. Sodium potassium pump C. Passive…

A: The nerve cells or neurons have the capacity to conduct the electrical impulses or the nerve…

Q: Which of the following neuronal changes is associated with short term synaptic strength? a. Changes…

A: Short-term plasticity (STP) also known as dynamical synapses in which synaptic capability changes…

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: Define the following terms: a. lecithin b. phosphatidylcholine c. cardiolipin d. GPI anchors e.…

A: Lecithin is a fat required in the cells of the body. Phosphatidylcholine is a chemical present in…

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…

Q: 1.) In an experiment you artificially cut in half (~50% reduction) the number of voltage gated…

A: Axon hillock is the terminal region in the soma which is the site of summation of synaptic inputs.…

Q: C +40mV - 0- -40mV -60mV - А DE В 1 4 Stimulus Time (msec) Membrane potential

A: Introduction: The brief sequence of events in the membrane potential following excitation is…

Q: Which one of the following statements about gap junctions or electrical synapses is incorrect? A.…

A: Electrical coupling is the transfer of coordinated action potentials from one cell to the next via…

Q: Which one is correct about the AP conduction velocity of nerve fiber A. Increase of the temperature…

A: Action potential spreads from the region of the sensory neurons that accept the stimuli till the…

Q: Which of the following is true about the conduction of action potentials?

A: Generation of Action potential occurs in the axon. The action potential is generated due to opening…

Q: Which of the following is the rapid upstroke in the action potential?A. Phase 0B. Phase 1C. Phase…

A: Within the cytoplasm of cells in the heart are specific populations of cells that are specialised…

Q: 4) A neuron with ionic gradients described in the table below receives a synaptic input that opens…

A: The formula to calculate sodium current is V = IR VOLATAGE POTENTIAL ( V) I - CURRENT R - RESISTANCE

Q: At what point during the action potential process is ATP used. (Short answer)

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