ne: hey insulate portsi of the neuron axon but not the cell body and dendrites. ney increase the speed of action potential Onduction along an axon by increasing the iamter of the axon. hey are formed by glial cells, namely oligodendrocytes and Schwann cells. hey are responsible for saltatory conduction, the process in which the action otentials junmp between nodes of Ranviet ney are fatty membranes.

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: Sensory receptors of afferent neurons Axon terminals of interneurons Cell body of interneurons Axons…

A: The peripheral nervous system (PNS) consists of all nerve cells in the human body that are not…

Q: This cell provides myelination within the centrallnervous system, allowing for. speed of conduction…

A: The nervous system consists of neurons and neuroglia. Neurons are the basic structural and…

Q: The sum of will dictate whether or not a neuron fires an action potential. Neurotransmitters…

A: Neurotransmitters are the signaling molecules that are released by presynaptic neurons into the…

Q: If a stimulus produces a receptor in a receptor cell capable of producing action potentials does…

A: In the given question, it is asked if if a stimulus produce a response in the form of action…

Q: toxin creates pores that are permeable to Ca2+. Describe its immediate effect on the resting…

A: Action potential the action potential is defined as the rapid rise and fall in the membrane…

Q: Action potentials are generated at receptor sites. If you touch an object tha rough, which one of…

A: The signals for senses and movements in the body are generated from the central nervous system…

Q: Synaptic transmission s terminated    by :-a- block of pretsynaptic receptorsb- elevation of Ca ++…

A: The biological process by which a neuron communicates with a target cell across a synapse is called…

Q: Regeneration of a severed axon has a better chance forsuccess in the PNS than in the CNS. Why is…

A: The nervous system involved in the transmission of impulses from all parts of the body to the brain…

Q: Receptors such as those in the inner ear, respond to stimulation with an AM response. In contrast, a…

A: Sensory receptors are specialized cells or structures in the body that detect and respond to…

Q: The main function of an axon is to... genreate EPSPs or IPSPs when neurotransmitters bind their…

A: Nervous system involves highly complex part of the animal that controls and co-ordinates the actions…

Q: f the absolute refractory period of a neuron is 0.7 milliseconds, what is the maximum frequency of…

A: The trick used by the nervous system is that the intensity of the stimulus is encoded into the…

Q: If the plasma membrane of an electrically excitable cellwere depolarized to threshold in the center…

A: An action potential is defined as a swift increase that is followed by a drop in the voltage or…

Q: with creative freedom illustarte the events of resting potential, depolirization and repolirisation…

A: Resting membrane potential is electrical potential difference across the membrane when the cell is…

Q: What is saltatory conduction? O The conversion of an electrical impulse into a chemical signal at an…

A: Electrical signals are conducted through electrically excitable nerve cells. The movement of ions…

Q: Which Cells insulate axıns with Myctin in the Cuts.?

A: The nervous system controls our body movements, our response to outer stimuli, etc. It is a highly…

Q: Which of the following actions is NOT an example of a reflex action Sneezing Blinking the eyelids…

A: The sudden and involuntary action to stimulus is called a reflex action. It helps in adapting and…

Q: Where does an axon potential begin on an axon? O the action-potential initiating hillock (APIH) O…

A: The nervous system composed of two cells - neurons and neuroglia. Neurons are the nerve cells which…

Q: Which neuron (s) fired (released neurotransmitters) at the 3 points indicated by the arrows

A: Answer. The neurons communicate at their meeting points, called synapse. The smallest gaps…

Q: Suppose you stimulate an axon so that you generate an actionpotential at both ends at the same…

A: “Since you have posted a question with multiple sub-parts, we will solve first three sub parts for…

Q: Explain how the binding of heroin to presynaptic neurones raises the probability of action…

A: Heroin is the opiate that is mostly used. Morphine is converted into heroin. Opioids boost the…

Q: Ordinarily, a neuron’s trigger zone is activated before any other part ofan axon, so a wave of…

A: Nerve cells are electrically excitable cells that method and transmits information by electrical and…

Q: EPSP acilitates depolarization of postsynaptic mem ne by increasing the permeability of the membrane…

A: Answer.    The correct answer is option (d) An EPSP facilitate depolarization of the postsynaptic…

Q: All afferent signals travel what direction? O None of these is correct O Toward a muscle Toward the…

A: All afferent signals travel towards central nervous system.

Q: Which of the following does NOT contribute to the establishment or maintenance of the neuron resting…

A: The neurons are nerve cells that carry impulses in the body, they are a crucial part of the nervous…

Q: Describe how depolarization occurs along an unmyelinated neuronal axon

A: Propagation of action potential leads to the depolarization of neuron.

Q: Complete the hierarchy of the parts and divisions of the nervous system

A: The nervous system is a vital system within an animal's body that coordinates signals to make proper…

Q: In neurons, the direction of signal is always: Up axon to soma (cell body) O Down soma (cell body)…

A: Neurons use both electrical impulses and chemical signals to transmit the information between…

Q: During an IPSP, the postsynaptic membrane becomes more permeable to GABA. O Ca2+. Na+. O K+.…

A: The IPSP stands for Inhibitory postsynaptic potential. It occurs when ion channels open resulting in…

Q: An individual diagnosed with CMT has difficulty holding a cup because: a. The myelin in the motor…

A: CMT It is also known as Charcot-Marie-Tooth disorder. This degenerative nerve disease is a…

Q: What physiological activity occurs at the pointed structures? O Myelination O Hyperpolarization…

A: Nerve cells are the structure that is responsible for transmitting electrical signals called "nerve…

Q: At the spinal cord; synapse, connecting i initiates an involuntary muscle contraction to move the…

A: The passage discusses the neural pathways and processes involved in the perception and response to…

Q: neuron

A: Neurons are information messengers. They use electrical impulses and chemical signals to transmit…

Q: the rising phase, which ion channel is responsible for action potential returning to its resting Vm,…

A: According to the question, we have to find out that after the rising phase, which ion channel is…

Q: Describe the effect of myelination on the speed ofaction potential propagation, as well as other…

A: The change in the electrical potential across the cell membrane of a nerve cell is referred to as…

Q: Which statement is true regarding chemical neurotransmission? O An IPSP closer to the soma will…

A: The cells of the nervous system have a significant functionality i.e. Communication. At the neuronal…

Q: (a)

A: Nerve cells or neurons are the cells that transmit and receive signals from the brain. These cells…

Q: Expression of which of the following lowers the threshold for firing action potentials? O A.…

A: The depolarization and repolarization are dependent on the ion movement across the membrane of…

Q: Briefly describe how myelinated axons increase the speedof signal transmission

A: Myelin surrounds the axons of the neurons. It is made up of protein and fatty acids. An axon is…

Cell Signaling

It allows cells to perform various cellular activities, coordinate, and interact with other cells. All cells of an organism receive signals from their environments and respond accordingly. Even the unicellular eukaryotes receive signals secreted by other cells and respond. In the case of yeast, mating takes place by signaling between the yeast cells. Communication by cell signaling in a multicellular organism has become a vast and important part of various fields of biology.