which of the following is not characteristic of neurons?

What is the role of microglial cells and why are they so important in the CNS? What is the function of dendrites in a neuron? 12. March 17, 2022. (a) microglia (b) oligodendrocytes (c) ependymal cells (d) astrocytes. Generally, these traits are not determined by just one gene, but instead by the cumulative effect . Even though someone is diagnosed with MS, the axons are not damaged. c. M2 d. hippocampus. researcher would: 2. Chapter 11 Test Questions Flashcards | Quizlet They have high energy requirements (about 20 per. C) diphasic impulses The person may have an increase in heart rate. These include nerve cells (or neurons) and glial cells (or glia ). having a low appetite. A postsynaptic cell can be a neuron, a muscle cell, or a secretory cell. C ) brain and spinal cord. People throughout history (has, have) been fascinated by the moon. 15. capacity of divide via mitosis due to absence of centrosomes. Neurons require continuous and abundant supplies of oxygen, and cannot survive for more than a few minutes without it. c. Extrapyramidal System Which of the following is the study of mechanisms of gene expression not involving c. Neuromuscular junction d. Parkinson's disease. The person would have impaired movement while the drug's effects were active. Neurons in the CNS are organized into functional groups. The frequency of impulse transmission indicates the stimulus intensity and the brain responds appropriately. Specialized cells in the nervous system that control behavior, senses, and movement are. Question. C) oligodendrocytes Which of the following describes the excitatory postsynaptic potential? d . b. Microglial cells B) anchor neurons to blood vessels B) provide the defense for the CNS To reveal how individual NAc neurons respond to reward, we implanted gradient index (GRIN) lenses in the NAcLat and the NAcMed and recorded single-neuron calcium activity using a miniature head-mounted microscopy (Figures 2 A and 2B). D) Schwann cells, Schwann cells are functionally similar to ________. a. Pupil dilation a. Preganglionic neurons tend to be long, with the ganglion located in or near the effector target tissue(s). d. Autonomic Nervous System, 21. a. Basal ganglia A. neuronal fibers; axons B. axons; dendrites C. dendr. b. increasing glial scarring. Name the two other neuron types which are cholinergic. FUNCTIONS OF ORGANELL NEURONS<br><br>The nerve cell - neuron - is a structural and functional unit of nervous tissue. Neurons are the basic functional units of the nervous system, and they generate electrical signals called action potentials, which allow them to quickly transmit information over long distances. 3 special characteristics of neurons. 68. conditions in Russian society that led to the Revolution of 1917. c. meninges. True or False, The action potential is caused by permeability changes in the plasma membrane. (a) can maintain ionic balance of extracellular environment for neurons (b) can take glucose from blood to provide to neurons to make ATP (c) can take up neurotransmitter from a synapse (d) can phag, Which of the following are characteristics of myelinated axons? a. anchor neurons to blood vessels. c. medulla B) amplitude of various sizes A neuron was found to originate in the hippocampus and terminate in the prefrontal cortex. Touch stimulation of this sensory receptor will open the mechanically gated ion channels, but action potentials are still not initiated because propagation of an action potential requires the opening of voltage-gated Na+ channels. a. impair memory. They are the fundamental units that send and receive signals which allow us to move our muscles, feel the external world, think, form memories and much more. d. cingulate cortex. 75. Which of the following is NOT a function or characteristic of neurons? The reduction - A Mathematical Model of CA1 Hippocampal Neurons with 64. a. Functional genomics ________ potentials are short-lived, local changes in membrane potential that can be either depolarized or hyperpolarized. The significance of the myelin sheath surrounding axons of werve neurons is that ia is B. composed of synaptio vesieles, which corapletely botate the nouron due w ins whter dianecer. Tell why you think so. a. medulla. 22. B) innervation of cardiac muscle Motor has two divisions: the somatic and autonomic. Module 5 Enhancement Question Cabangil 1J-1 FF This may account for the cycles of relapse and remission in different patients. Study with Quizlet and memorize flashcards containing terms like 1. 11. d. oligodendrocytes fail to myelinate re-growing axons. d. cerebral blood vessels. O They conduct impulses. A . b. astrocytes respond to injury. If a drug severely depressed the functioning of the medulla, which of the following might be a. Microglial cell activation The neuronal membrane. Which of the following is not a characteristic of neurons? b. basal ganglia synapses. 25. Transcribed image text: Which of the following is not a characteristic of neurons? d. Interneurons, 16. response? b. on the soma. A) peripheral and spinal nerves B) brain, spinal cord, and peripheral nerves C) brain and spinal cord D) spinal cord and spinal nerves. b. Axon and soma myelinated; move from one node of Ranvier to another. B. Myelin prevents the conduction of electricity from the axon hillock to the axon terminal. New three-photon miniature microscopes open the study of neuronal networks to those deep in the brains of behaving animals. The part of a neuron that sends neurotransmitters into a synapse is called a(n): 6. (a) Fluorescent lightbulbs contain a small amount of mercury, giving a mercury vapor pressure of around 1*10^(-5) atm. In myelinated axons the voltage-regulated sodium channels are concentrated at the nodes of Ranvier. Show the details. Extracellular singleunit recordings of piriform cortex neurons in rats d. M1. a. meninges. Neurons that lie between sensory neurons and motor neurons are called ________. A&P EXAM 1 Ch 11,12,13,15 Flashcards | Quizlet The term central nervous system refers to the ________. A) resting period 53. When information is delivered within the CNS simultaneously by different parts of the neural pathway, the process is called ________ processing. A&P Ch. 14 Flashcards - Cram.com Combination therapy with simultaneous delivery of spinal cord d. increased protection of the brain. D) astrocytes, Immediately after an action potential has peaked, which cellular gates open? a.) A) ependymal cells depolarized to which ofthe following is correct? b. Pons Which of the following is NOT characteristic of smooth muscle? c. ventricles. _____________ is the study of how genes support the function of neurons. The majority of these axonal knobs are shown to be "firing." 2003-2023 Chegg Inc. All rights reserved. B) amplify or enhance the effect of ACh B) The release of neurotransmitter molecules gives cells the property of being electrically coupled. Classify Neurons by their Function. c. occipital lobe. Which membrane potential occurs because of the influx of Na+ through chemically gated channels in the receptive region of a neuron? ________ are found in the CNS and bind axons and blood vessels to each other. c. Hypoglossal nerve . D) astrocytes, What does the central nervous system use to determine the strength of a stimulus? a) Myelinated axons transmit nerve impulses via continuous conduction. B) short distance depolarization 78. inability to divide by mitosis long cell life span (longevity) high aerobic metabolic rate ability to survive in anaerobic (Uithout oxygen) conditions. Oligodendrocytes form and maintain the blood-brain barrier. Efferent nerve fibers may be described as motor nerve fibers. 14. Solved Which of the following is NOT characteristic of | Chegg.com 11. B) They have extreme longevity.C) They are mitotic. B) amino acid d. Neurotransmission from the neuron would increase. D) all sodium gates are closed, In what way does the interior surface of a cell membrane of a resting (nonconducting) neuron differ from the external environment? B) afferent neuron Which of the following is not found in the limbic system? What are the different types of neurons in the ANS and where are they located? 23. b. Gliosis Neurons: The thalamus routes all types of sensory information except: a. Pons Neurons are relatively small, simple-structured cells. C) acetylcholine 56. c. provide the defense for the CNS. 1. b. polymorphism. D) A single type of channel will open, permitting simultaneous flow of sodium and potassium. True or False, Large-diameter nerve fibers conduct impulses much faster than small-diameter fibers. The presence of at least one Y chromosome indicates: 77. Which of the following is NOT characteristic of the sympathetic d. it fills spaces in the brain. Melatonin is released from the: The cell body is the metabolic center of the neuron. b. Broca's Aphasia. Which of the following statements most accurately describes the effects caused by binding of the neurotransmitter (green dots) to the structure labeled C? D) are crucial for the development of neural connections, An inhibitory postsynaptic potential (IPSP) is associated with ________. b. Microglial cells d. reduce cortical arousal. What are the different classes of neurons and their functions? Is the information in this quote about afferent of efferent? Citation 17 - Citation 21 However, the effect of CH on axonal plasticity within the white matter following ischemic stroke is not known in detail. c. Myelin traps sodium ions in the axon and, What does myelin do for neurons? Functions. b. Interneurons. 10 Characteristics Of Neurons (Nerve Cells) and Nervous System - 8SA.NET A drug that reduces the activity of the amygdala would likely: D) lowering the threshold for an action potential to occur. A drug that inhibited the reticular activating system would most likely cause: described as having a word on the tip of your tongue, might have abnormal functioning in the: B) They have extreme longevity. a. ribosomes. a) ion b) cholinesterase c) neurotransmitter d) biogenic amine. When one or more presynaptic neurons fire in rapid order it produces a much greater depolarization of the postsynaptic membrane than would result from a single EPSP; this event is called ________ summation. What portion of the neuron receives signals from other neurons? a. Oligodendrocytes 29. Enkephalins and endorphins are peptides that act like morphine. c. Astrocytes d. Vagus nerve. Expert Answer. Many drugs that produce highly enjoyable effects likely do so by affecting the: C) An excitatory postsynaptic potential occurs if the excitatory effect is greater than the inhibitory effect but less than threshold. b. Medulla 25 26 Which of the following is not a special characteristic of neurons d. Sympathetic ganglion, 24. a. periaqueductal gray. Upper motor neurons are classified according to the pathways they travel in C. The Babinski response is not characteristic of paralysis from UMN lesions cells would most likely be responsible? Which of the following is an excitatory neurotransmitter secreted by motor neurons innervating skeletal muscle? d . E) provide the defense for the CNS, Which of the choices below describes the ANS? ______________ are chemicals that promote the growth and development of neurons. B) muscle contraction would occur. Reflexes are rapid, automatic responses to stimuli. Which of the following is NOT a characteristic of the parasympathetic division? a. interneuron. Both excitatory and inhibitory potentials impinge on neurons. In this issue, Zhao et al. c. Motor efferent neurons possess long dendrites and short axons. Which of the following is not a characteristic of neurons Nerve cell adhesion molecules (N-CAMs) ________. a. cerebral aqueduct. Study with Quizlet and memorize flashcards containing terms like Neuroglia that control the chemical environment around neurons by buffering potassium and recapturing neurotransmitters are _____., Which of the following is not a function of the autonomic nervous system? d. pineal gland. The preclinical phase of AD, which can last 10 to 20 years, is characterized by the gradual accumulation of -amyloid and tau aggregates in the brain, together with neuroinflammation and synaptic alterations ().Several lines of evidence indicate that -amyloid deposition precedes . (d) All of these are characteristic of neurons. They secrete acetylcholine. Identify the neuron type described: Two neuron types whose cell bodies are in the spinal cord (CNS). Be Saltatory propagation occurs in _________ axons, in which action potentials _________. D) stimulate the production of acetylcholine, Which of the following is not a function of the autonomic nervous system? Group of answer choices: Neuroglia refer to neurons with axons coated in myelin. Serotonin is a biogenic amine neurotransmitter widely distributed in the brain, where it plays a role in emotional behavior and helps to regulate the biological clock. d. None of these are correct. C) Sodium gates in the membrane can open in response to electrical potential changes. This protective role is important because cells of the immune system are denied access to the CNS. The all-or-none phenomenon as applied to nerve conduction states that the whole nerve cell must be stimulated for conduction to take place. View the full answer. B) Ions always move passively across membranes. Diminished activation of postganglionic sympathetic neurons Neurotransmitters are chemical signals used as a means of communication. Which of the following is not characteristic of - Course Hero What do ANS neurons regulate with regard to mechanical digestion? d. support and brace neurons. a. Trigeminal nerve C) ganglia What market share did Mountainside have? A) They are short-lived. Motor afferent neurons possess long dendrites and short axons. GABA and glycine are amino acid neurotransmitters; dopamine and norepinephrine are catecholamines; and endorphin and enkephalin are peptide transmitters. Therefore, the axon can release one or more neurotransmitters simultaneously, creating singular or multiple events. a. epigenetics. Neurotransmitter is released from presynaptic neurons through what mechanism? a. Which of the following is not characteristic of neurons. Discover and discuss the meaning of dendrites, axon, membrane polarization, membrane depolarization, and synapses. d. Activation of postganglionic parasympathetic neurons, 65. Treatment of pain with local anesthetics leads to an unfavorable decrease in general sensory acuity due to their indiscriminate block of both pain sensing . The part of a neuron that conducts impulses away from its cell body is called a (n) ________. Which of the following is not a function of the autonomic nervous system? a. regenerating axons may be unable to regain previous connections through the site of injury. A. Which of the following would be most likely to increase heart rate? b. Neurons have . Which Of The Following Is Not A Characteristic Of Neurons ATP-dependent "motor" proteins such as kinesin, dynein, and myosin are responsible. What should the nurse explain to the patient regarding the role of serotonin and depression? b. Some neuroglia remove debris and foreign material from the nervous system. d. astrocytes form and maintain the blood-brain barrier. Which of the following is true about the movement of ions across excitable living membranes? A toxin that destroyed the presynaptic terminal on an axon would likely: 7. Extrapyramidal side effects produced by antipsychotic drugs are similar to the symptoms of: a. it is not an increase in membrane potential b. causes the voltage of the internal membrane towards zero c. inside the membrane becomes more positive than resting potential d. lowers the probability of producing an action potential e. none of the above. Neurons synapse with: a. other neurons b. muscles c. glands d. all of these. Immediately after an action potential the potassium gates, being slow gates that do not respond to change in the electrical charge, allow additional K+ ions to flood into the cell. d. Nuclei. o Neurons have a very long lifespan Have low mitotic activity fie cannot undergo cell division) O Ability to transmit electrical signals (i.e. a. Alzheimer's disease. your answer. Which of the choices below describes the ANS? Which of the following is not characteristic of neurons? a. Activation of preganglionic sympathetic neurons b. procedural memory. Which of the following is NOT a special characteristic of neurons a Growing numbers of sodium channels appear spontaneously in the demyelinated fibers so that conduction resumes, even if slower. (a) Voltage-gated calcium channels open (b) Neurotransmitter binds to receptors (c) Action potential arrives at axon terminal (d) Neurotransmitter is removed from the synaptic cleft (e) Neurotransmitter released into synaptic cleft (f) Graded potential generated in postsynaptic cell, (c) Action potential arrives at axon terminal (a) Voltage-gated calcium channels open (e) Neurotransmitter released into synaptic cleft (b) Neurotransmitter binds to receptors (f) Graded potential generated in postsynaptic cell (d) Neurotransmitter is removed from the synaptic cleft. C) responds to stimuli by gland secretion or muscle contraction, The period after an initial stimulus when a neuron is not sensitive to another stimulus is the ________. a. A) They conduct impulses. In addition to diffusion, what are two other mechanisms that terminate neurotransmitter activity? 28. threshold Voltage-gated Na+ A. a. it provides a protective cushion for the brain. 13. d) There, In order for skeletal muscle cells to contract, they must be excited by motor neurons. Which of the following is NOT a characteristic of neurons? A) They have c. Electrical impulses would be unable to travel down axons. The interior of a neuron is composed of cytoplasm and a gel that is called. a. Autonomic pathways consist of two types of motor neurons. D) generator potential. The function of neurons is to communicate information from one part of the body to other parts. Expert Answer. What are the properties of myelinated axons which makes them ideal for long-distance motor control of skeletal muscle? Describe annual cleanupthat isfrequently present in these agreements. c. a Mendelian disease. The oligodendrocytes can myelinate several axons, Cell bodies of sensory neurons may be located in ganglia lying outside the central nervous system, During depolarization, the inside of the neuron's membrane becomes less negative. C) association neuron The STN also forms a reciprocally connected network with the GABAergic external globus pallidus that converges onto common basal ganglia output neurons. What effect might a disease that destroyed oligodendrocytes have on neuronal function? However, the resting membrane potential in three types of neurons was not significantly different in the present study; therefore the 5-HT . Overview of neuron structure and function - Khan Academy a. extrapyramidal motor system. d. the hypothalamus. a. microglial cells. The hills on the surface of the brain are referred to as: b. medulla. Which of the following would NOT be an example of having an activated sympathetic Alzheimer's disease (AD) is a progressive neurodegenerative disorder with an increasing worldwide prevalence. True or False, Unipolar neurons have axons structurally divided into peripheral and central processes. b. that a person is genetically female. C. Myelin traps sodium ions in the ax. What function is served by the increased axon diameter at the nodes of Ranvier? A. Which of the following membrane regions would have significant numbers of voltage-gated ion channels? O They have extreme longevity. The pathogenesis of the sudden disruption of neurologic function is unknown; it probably involves dysregulation of the reticular activating system in . Neurons are located both in the CNS and on the periphery. Calcium influx into the synaptic terminal causes vesicle fusion.