Which of the following will occur when an excitatory postsynaptic potential (EPSP) is being generated on the dendritic membrane? C) calcium c. Activation of preganglionic parasympathetic neurons a. ribosomes. c. the structure is further out to the side of the brain. This results in increased speed of impulse propagation. The substance released at axon terminals to propagate a nervous impulse is called a (n) ________. Their basic function is to receive and transmit information through electrical impulses. Give a valid explanation of why this could occur. Unipolar,Bipolar,Multipolar. d. Autonomic Nervous System, 21. A) An excitatory postsynaptic potential occurs if the excitatory effect is greater than the inhibitory effect but less than threshold. a. efferent neuron b. afferent neuron c. association neuron d. glial cell, Which of the following is not characteristic of neurons? 49. c. Hypoglossal nerve High mitotic rate B. b. Microglial cells d. hippocampus. c. pons. c. pineal gland. a. The autonomic nervous has control centers in the: c. genes. the sympathetic division of the autonomic nervous system. B) motor fibers that conduct nerve impulses from the CNS to skeletal muscles Which of the following is correct? a. Epigenetic markers The latter from the brain to the spinal cord. Multiple Choice. Identify the following: Acetylcholinesterase would be found in the synapse between neurons for this branch of the ANS and the effector cells. What are the neuron functions for the peripheral nervous system? d. Neurotrophins. 48. A drug that increases appetite would likely affect: Nanoscale integrated circuit technologies have become popular for designing and implementing biologically inspired pulse-based brain systems [1].These advanced Nanoscale devices are implemented in specific defined models of neuronal recording [[2], [3], [4]].Especiallyto replace a dead neuron system with an artificial neuron system to activate the paralyzed body parts. Which of the following is false or incorrect? Citation 17 - Citation 21 However, the effect of CH on axonal plasticity within the white matter following ischemic stroke is not known in detail. Which of the following is expected to occur first if the membrane potential decrease shown in the graph on the left were to reach the threshold value indicated at ~ -55 mV? b. efferent neuron. Which nerve cells carry impulses from the brain to the muscles? help to circulate the cerebrospinal fluid. b. polymorphism. What is the direct role of neurotransmitter at a chemical synapse? Answer: Option D is correct Explanation: Neurons generally do not e . B. Myelin prevents the conduction of electricity from the axon hillock to the axon terminal. A. Functions. Which of the following is not true about the cerebral cortex? ATP neurotransmitters have what basic effect on the body? c. M2 microglial cells There are two basic neuron-containing systems: the central nervous system (CNS), which includes the spinal cord and brain, and the peripheral nervous system (PNS), which includes all other nerve tissues. When the neurons were damaged, the number of Nissl corpuscles decreased significantly . Which of the following is false or incorrect? d. inferior colliculus. 47. a. medulla. a. Dendrites and axon b. hypothalamus. Like the heart, lungs, and stomach, the nervous system is made up of specialized cells. 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? a. norepinephrine. d. proteins. B) synapse A) ion d. implicit memory. 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 ________. They have high energy requirements (about 20 per. What is the role of calcium in synaptic activity? 46. Which type of microglial cells promote inflammation? d. improve recovery from traumatic brain injury. All other trademarks and copyrights are the property of their respective owners. C) negatively charged and contains more sodium a. basal ganglia Discovering that someone has glial scars means suggests that: muscles throughout the body? The autonomic has two divisions: the sympathetic and parasympathetic. D) control the chemical environment around neurons Cold sores on the skin of the mouth occur when herpes simplex viruses that are dormant in neural ganglia become active and travel to the skin of the mouth. your answer. b. spindle fibres to divide the cell. depolarized to a. polymorphisms. For skeletal muscle cells to contract, they must be excited by motor neurons. 1. a) ion b) cholinesterase c) neurotransmitter d) biogenic amine. A stimulus traveling toward a synapse appears to open calcium ion channels at the presynaptic end, which in turn promotes fusion of synaptic vesicles to the axonal membrane. It is impossible in a single chapter to delineate comprehensively the extensive structural, topographical and functional variation achieved by this cell type. Contains cells with macrophage activity c. Exhibits regenerative capacities d. Contains lymphatic vessel. When activated, shortens C. Found in the brain and spinal cord. What are the different types of motor neurons? analyzes sensory information, stores information, makes decisions. a. decrease a neurons's aerobic energy metabolism. order to draw a diagram in her notebook. The term central nervous system refers to the ________. a. other neurons b. muscles c. glands d. all of the above, All of the following are characteristics of sympathetic preganglionic neurons EXCEPT: a. What are the two(2) functional neuron types that are structurally multipolar neurons? b. cingulate cortex. d. cerebellum. Select the correct statement about serial processing. Conduct chemo-electrical impulses. D) potassium, Nerve cell adhesion molecules (N-CAMs) ________. What is the role of acetylcholinesterase? Both responses are examples of graded potentials. a. Dendrite b. A) acetycholine Its structure is multipolar. Which of the following is not characteristic of neurons. [25] designed a voltage output feedback controller, which uses the neural network feed-forward (NNFF) with the harmony search algorithm (HSA) to control the PEMFC output voltage. the afferent division of the nervous system. a. synapses. While taking notes in class, a student had keep in mind what the professor had just stated in Aim: The Combining Mechanisms for Better Outcomes randomized controlled trial assessed the effectiveness of various spinal cord stimulation (SCS) modalities for chronic pain. b. 27. What is the role of microglial cells and why are they so important in the CNS? Neuroglia found in the CNS that bind axons and blood vessels to each other are called ________. Because all action potentials are alike, how does the brain separate situations that require immediate attention from ordinary "positional" reports? Myelination of the nerve fibers in the central nervous system is the job of the oligodendrocyte. A) Specific sodium gates will open. Efferent neurons are ___ neurons carrying impulses to the muscles. View the full answer. d. hypothalamus. 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. myelinated; move from one node of Ranvier to another. c. Transcription factors a. regenerating axons may be unable to regain previous connections through the site of injury. Which of the following is the study of mechanisms of gene expression not involving 1. c. medulla Which of the following is not characteristic of neurons? C) action potential Which of the following is true about the movement of ions across excitable living membranes? Describe which neurons are considered cholinergic in both the parasympathetic and sympathetic divisions. Required fields are marked. group cfibers are not capable of salatory conduction. A) the membrane potential has been reestablished Learn about the neuron diagram, structure, and function. True or False, Unipolar neurons have axons structurally divided into peripheral and central processes. True or False, The autonomic nervous system is under voluntary control; whereas, the somatic nervous system is involuntary. The function of neurons is to communicate information from one part of the body to other parts. a. medulla. O They conduct impulses. specific or different from others in some way that they do not have. Which membrane potential occurs because of the influx of Na+ through chemically gated channels in the receptive region of a neuron? B) muscle contraction would occur. d. that a person has autochromosomal traits. Which of the following describes the excitatory postsynaptic potential? C) opens K+ or Cl- channels Group of answer choices: Neuroglia refer to neurons with axons coated in myelin. Which of the following is not a function of the autonomic nervous system? having a low appetite. D) positively charged and contains more sodium. Allow ions to move in and out of its cellular membrane. Get access to this video and our entire Q&A library. A drug that reduces the activity of the amygdala would likely: A) Ions always move actively across membranes through leakage channels. This is an example of: These include nerve cells (or neurons) and glial cells (or glia ). The latter from the brain to the spinal cord. Demyelination interferes with saltatory conduction, which would result in a slowing down of nerve impulse propagation. ce3z/(4zi)3dz_ce^{3z}/(4z-i)^3dz True or False, The nodes of Ranvier are found only on myelinated, peripheral neuron processes. Different types of neurons include sensory, motor, and interneurons, as well as structurally-based neurons, which include unipolar, multipolar, bipolar, and pseudo-unipolar neurons. Its cell body is in an autonomic ganglion outside the CNS. 44. B) If a motor neuron in the body were stimulated by an electrode placed about midpoint along the length of the axon ________. Sensory receptors for touch (and pressure) respond to physical deformation of the receptors, resulting in the opening of specific mechanically gated ion channels. Inhibitory postsynaptic potentials (IPSPs) are "firing," but due to the neurotransmitter released and its action, the postsynaptic neuron is inhibited from "firing" (hyperpolarized). nervous system. A) sodium b. Which of the following lists the components found in a synapse? The concentration of __ is higher inside than outside the cell. New three-photon miniature microscopes open the study of neuronal networks to those deep in the brains of behaving animals. A postsynaptic potential is a graded potential that is the result of a neurotransmitter released into the synapse between two neurons. Which of the following are true about neurons? Briefly describe 6 effects this division has on the body. 14. Friedreich's ataxia is a rare disease that affects your central nervous system. Strong stimuli cause the amplitude of action potentials generated to increase. The cells communicate by sending signals between different parts of the brain, and the neurons can interface with gray matter nuclei. Sympathetic nervous system neurons contact muscle tissue at neuromuscular junctions. The point where a motor neuron meets a muscle fiber is called the: c. Autonomic Nervous System Resting potentials are not just characteristics of nerve cells; all cells in the body have resting potentials. What is the function of dendrites in a neuron? B) They have extreme longevity. b. Microglial cells a) axon b) axon hillock c) dendrites d) soma, Which of the following is not a structural feature of a neuron? b. d. cingulate cortex. The interior of a neuron is composed of cytoplasm and a gel that is called. b. procedural memory. The patient is noncompliant and needs additional monitoring. Define neurotransmitter. c. a Mendelian disease. B) oligodendrocytes 1.Introduction. a. M4 D) erratic transmission of nerve impulses, Which of the following is not a chemical class of neurotransmitters? Select the correct statement regarding synapses. The axon c. The dendrites d. The Nissl bodies. b. sympathetic nervous system. Calcium influx into the synaptic terminal causes vesicle fusion. A) They conduct impulses. b. medulla It is shown that localized co-injection of lidocaine derivative QX-314 and receptor agonists is able to block cold sensitivity in mice in a targeted way, with implications for treating cold pain associated with injury and disease. a. Sensory neurons. c. M2 Traub et al. B) They can form on receptor endings. Preganglionic neurons tend to be long, with the ganglion located in or near the effector target tissue (s). All rights reserved. 1. Neurons require continuous and abundant supplies of oxygen, and cannot survive for more than a few minutes without it. Reflexes are rapid, automatic responses to stimuli. What is an example of a presynaptic cell? 12. B) Ions always move passively across membranes. B) brain, spinal cord, and peripheral nerves The correct answer is (d) All of these are characteristic of neurons. A) They increase amplitude as they move away from the stimulus point. When a sensory neuron is excited by some form of energy, the resulting graded potential is called a(n) ________. If a person ingested a substance that temporarily impaired the functioning of the Which of the following will occur when an excitatory postsynaptic potential (EPSP) is being generated on the dendritic membrane? d. temporal lobe. A substance that directly activates gene transcription is likely acting as a: Download Citation | Crosstalk between m6A mRNAs and m6A circRNAs and the time-specific biogenesis of m6A circRNAs after OGD/R in primary neurons | Cerebral ischaemiareperfusion injury is an . a. Oligodendrocytes D) effector, What is the role of acetylcholinesterase? Strong stimuli cause the amplitude of action potentials generated to increase. d. The person may have motor tremor. 100% (3 ratings) Which of the following is NOT a characteristic of neurons? What are the small lower motor neurons that innervate intrafusal muscle fibers that are part of specialized stretch receptors called? destroy ACh a brief period after its release by the axon endings. d. Activation of postganglionic parasympathetic neurons, 65. Our experts can answer your tough homework and study questions. B) called neuroglial cells Which of the following is not a special characteristic of neurons? B) amplify or enhance the effect of ACh . Neurons are found across the body but are most numerous in the brain. b. Medulla Which ion channel opens in response to a change in membrane potential and participates in the generation and conduction of action potentials? This protective role is important because cells of the immune system are denied access to the CNS. a. Trigeminal nerve They have extreme longevity. Estimate the mass of Hg vapor present in the type of long, thin fluorescent tubes used in offices. D. They have an exceptionally high metabolic rate., These cells in the CNS have cilia that move in order to circulate cerebrospinal fluid ________. a) anchor neurons to blood vessels b) control the chemical environment around neurons c) Provide the defense for the CNS d) support and brace neurons e) guide the migration of young neurons, synapse. I was doing so well." The synaptic cleft prevents an impulse from being transmitted directly from one neuron to another. c. the thalamus. 73. A) efferent neuron 79. o Neurons have a very long lifespan Have low mitotic activity fie cannot undergo cell division) O Ability to transmit electrical signals (i.e. High metabolic rate C. Require continuous supplies of glucose and oxygen D. Extreme longevity E. No exceptions; all of these are characteristic of neurons. c. sleepiness. b. c. Extrapyramidal System C) brain and spinal cord b. hindbrain. _____________ is a process for responding to brain injury. C) neurolemma 76. Which of the following mechanisms is most significant in returning Na+ and K+ concentrations to resting ionic conditions (from point D to point E)? Damage to the ________________ could cause changes to one's motivation to eat, such as a. the classification is based on the number of processes extending from the cell body b. multipolar neurons have several axons and one dendrite c. most neurons in the; Which of the following neurons forms the blood-brain barrier? D) nitric oxide, Which of the following describes the excitatory postsynaptic potential? Classify Neurons by their Function. 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. a. Multi-polar neurons b. Bipolar neurons c. Uni-polar neurons. 33. A) mechanically gated channel Neuronal processes that normally conduct impulses toward neuron cell bodies are called and those that carry impulses away from neuron cell bodies are called. formation. The reticular activating system includes all of the following structures except: Which of the following is not a function of astrocytes? c. basal ganglia. A) innervation of smooth muscle of the digestive tract B) innervation of cardiac muscle C) innervation of skeletal muscle D . A) resting period Motor afferent neurons possess long dendrites and short axons. Anatomy and Physiology questions and answers. Discover and discuss the meaning of dendrites, axon, membrane polarization, membrane depolarization, and synapses. conditions in Russian society that led to the Revolution of 1917. Which of the following is not characteristic of neurons? They control, in this way, from the movement of an arm, thoughts and even feelings through electrical signals that are called nerve impulses. Select all that apply. a. Mitochondria in a neuron would no longer function. c. reticular formation. These neurons are inhibitory neurons, meaning they release neurotransmitters that keep other neurons from firing. 23. Which of the followings cells accounts for roughly half of the volume of the nervous system? nerve impulses) Need constant supply of nutrients and oxygen O All of the listed answer choices . d. Sensory efferent neurons po. 1. Which of the following is true about the movement of ions across excitable living membranes? c. Astrocytes Classify neurons according to their structure. These cells have a star-like shape and a central body that contains the . b. Somatic Nervous System This area is also known as the soma or perikaryon. If the electrode is removed, a potential of zero is recorded again. Psych 4035 Ch 3 Practice and Reading Quizzes, David N. Shier, Jackie L. Butler, Ricki Lewis, Charles Welsh, Cynthia Prentice-Craver, David Shier, Jackie Butler, Ricki Lewis, Chapter 3 Formatting Documents- Val Caylor. c. end terminus. To find the time when this object reaches the position x=0x=0x=0 we can use the quadratic formula, or apply the following two-step procedure: (a) Use Equation v2=v02+2a(xx0)=v02+2axv^2=v_0^2+2 a\left(x-x_0\right)=v_0^2+2 a \Delta xv2=v02+2a(xx0)=v02+2ax to show that the velocity of the object when it reaches x=0x=0x=0 is given by v=v022ax0v=\pm \sqrt{v_0^2-2 a x_0}v=v022ax0. d. Polymorphism, 50. certain disorder would most likely investigate which of the following? 19. What are ciliated CNS neuroglia that play an active role in moving the cerebrospinal fluid called? Estimate the number of moles of Ar in a typical lightbulb. 13. The all-or-none phenomenon as applied to nerve conduction states that the whole nerve cell must be stimulated for conduction to take place. During depolarization, the inside of the neuron's membrane becomes less negative. Sensory and motor divisions. An experimental drug that reduces the release of chemicals that inhibit axon growth may: Which of the following is NOT characteristic of nervous tissue in the brain a. (1991) finds that the CA1 neuron exhibits trains of action potentials when a small current (< 1 nA) is applied to the soma, but a full calcium spike and burst followed by trains of action potentials when the same small current is applied to .
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