View the University of Michigan WebScope (http://openstaxcollege.org/l/nervefiber) to see an electron micrograph of a cross-section of a myelinated nerve fiber. The axon contains microtubules and neurofilaments that are bounded by a plasma membrane known as the axolemma. Outside the plasma membrane of the axon is the myelin sheath, which is composed of the tightly wrapped plasma membrane of a Schwann cell. What aspects of the cells in this image react with the stain to make them a deep, dark, black color, such as the multiple layers that are the myelin sheath?

Q: Label the structures in the following diagram of a neuron. (a) ______________ (b) ______________(c)…

A: The neuron is the building block or fundamental unit of the nervous system. It is a relay system of…

Q: what types of symptoms would you expect from such a disease? why? would Schwann cells or…

A: The network of nervous system consists of brain, spinal cord and nerves. The nervous system plays an…

Q: sometimes the terms neuron and nerve are mistakenly used interchangeably. explain the difference…

A: Neurons are the structural and functional unit of nervous system. They are composed of mainly two…

Q: Label the structures in the following diagram of a neuron.

A: We can say that the neuron is the building block or fundamental unit of the nervous system. It is a…

Q: Choose the item in column 2 that best matches each item in column 1…

A: The nervous system of our body is concerned with the functions of sensory reception, processing, and…

Q: Imagine that scientists have just discovered a weird new marine tunicate at extreme depths of the…

A: A pacemaker is a medical device that uses electrical impulses to regulate and control the rhythm of…

Q: Watch this video (http://openstaxcollege.org/l/summation) to learn about summation. The process of…

A: Graded potentials result in small changes of depolarization or hyperpolarization in the voltage of a…

Q: Fluorescent FM dyes partition reversibly into biological membranes without penetrating through them.…

A: FM dyes are fluorescent compounds used in the examination of the process of recycling vesicles.…

Q: In the peripheral nervous system, Schwann cells form myelin sheaths.

A: The axons of both the central nervous system and the peripheral nervous system are myelinated by…

Q: Spastic paralysis (resulting from the failure of muscles to relax), induced by the neurotoxin…

A: Neurotransmitters are referred to as the body's chemical messengers. They are the molecules used by…

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: Which of the following glial cells provide myelin in the central nervous system?

A: The central nervous system is composed of the brain and the spinal cord. The brain is a complex…

Q: Multiple axons in the peripheral nervous system bundled together by layers of connective tissue form…

A: The nervous system is like the central control unit of the body and controls and responds to stimuli…

Q: You prepare a squid giant axon and inject it with a tiny volume of solution containing 0.1 M NaCl…

A: At beginning the radioactive Na+ ions and K+ ions are remains inside of the axon, as a result of…

Q: identify the key type(s) of cell junctions present in this image (for example, tight junctions, gap…

A: The histological slice of human cerebral cortex tissue exhibits dark blue coloured nuclei scattered…

Q: (f) Parts of a Neuron A Axon (initial B segment) G H C Synapse: The region where an Faxon terminal…

A: Neuron is the fundamental unit of the central and peripheral nervous system. Its major function is…

Q: The following are characteristics of the myelin sheath EXCEPT:   A formed by the oligodendrocytes…

A: The nervous system is comprised of neurons, special structures capable of acquiring and transmitting…

Q: Visit this site (http://openstaxcollege.org/l/neurolab)to see a virtual neurophysiology lab, and to…

A: The nervous system consists of nervous tissues. Neurons, also known as nerve cells are the…

Q: Which of the following statements accurately defines epineurium?   A. Fluid-filled space at a…

A: The peripheral nervous system(PNS) is composed of nerves that connect the peripheral organs to the…

Q: A neurotoxin was delivered to a patient that prevented sodium channels from opening at the axon…

A: Action potential is just rise and fall of membrane potential which generates signals to various…

Q: Which phase of impulse transmission would be lacking in a person with Alzheimer's disease? Select…

A: Alzheimer's disease is a brain disorder that results in damage to the brain cells "neurons" and case…

Q: Ethosuximide is a drug used to treat epilepsy, particularly absence seizures. It blocks ion channels…

A: Ethosuximide is the drug that is used to control the seizure. It helps to control the absence of…

Q: Axons can be extremely long and winding. What structural property allows them to maintain the…

A: The structural and functional unit of the nervous system is called a neuron. A neuron is composed of…

Q: For this question you may use either a neuron or a skeletal muscle fiber (but not both) to answer.…

A: Nerve conduction is a general term for electrical signals carried by nerve cells. A gap called a…

Q: (f) Parts of a Neuron A C E D H Synapse: The region where an axon terminal communicates with its…

A: Neuron is the fundamental units of brain and nervous system. Neuron consists of dendrites, soma and…

Q: D) The concentration of this ion and negatively charged proteins is much greater inside the cell…

A: The Neuron's membrane consists of sodium to be present in large quantity in the extracellular part…

Q: Malathion is an insecticide commonly used in the horticultural industry. Many homeowners apply this…

A: Introduction:- Insecticides are the chemical substances which are used for killing various types of…

Q: Assume a neuron is at rest and the following changes happen: Step 1: Neurotransmitter binds to an…

A: Neurotransmitters are compounds secreted from neurons at the synapse. The neurotransmitters can…

Q: a channel can be gated mechanically, voltage or by a ligand. When you hear a sound all three of…

A: Ligand-gated channels have a significantly enhanced permeability when a chemical ligand attaches to…

Q: With respect to the three structural types of neurons (unipolar, bipolar & multipolar): State which…

A: The neurons are basic working units of the brain. They are specialized cells within the nervous…

Q: Draw a presynaptic and postsynaptic neuron at to demonstrate the release and acceptance of a…

A: SNARE protein play important role in release of neurotransmitter from synaptic vesicles  as they…

Q: After injecting the neuron with a Lucifer yellow dye, you visualize a group of neurons with very…

A: We have different sections of the nervous system.  Most of the originate from the central nervous…

Q: Name a neurotransmitter stored at the terminal end of the axon.

A: The nervous system of an organism is quite complex network that is responsible for coordinating…

Q: Identify and describe the following on the diagrams below:   1. Dendrites   2. Axon   3.…

A: Our nervous system is a complex network of cells and nerves and it helps to carry/transmit…

Q: PhysioEx, Neurophysiology of Nerve Impulse

A: Neurophysiology of a nerve impulse includes the transmission of signals along the neuron,…

Q: Distinguish between insulation by oligodendrocyte or Schwann cells. Relate myelination to signal…

A: Glial cells are the cells supporting the central as well as peripheral nervous system functions.…

Q: Visit this site (http://openstaxcollege.org/l/nervetissue3) to learn about how nervous tissue is…

A: The basic unit of the nervous system is neuron or nerve cells which are present in the brain in…

Q: Neurotransmitters, the chemicals used in signaling across synapses, can be either re-absorbed by the…

A: Neurotransmitters can serve as chemical messengers for ion channels, neurotransmitter mainly causes…

Q: Name four types of glial cells in the Central Nervous System, and list a function for ea of these…

A: Glial cells, consisting of microglia, astrocytes, and oligodendrocyte lineage cells as their major…

Emotions

Emotions are biologically based psychological conditions caused by neurophysiological changes which are linked to different factors such as thoughts, emotions, behavioral responses, and pleasure or displeasure. These emotions are not similar to moods. The mood is an affective state. Mood depends upon several factors, such as weather, the environment, physiology, etc. Emotions can be beneficial or detrimental depending on the situation. Emotional reactions are simple. Emotional well-being is strongly affected by our well-being, and such feelings are private.