Image credit: iStockphoto. acetylcholine What are ciliated CNS neuroglia that play an active role in moving the cerebrospinal fluid called? A) postsynaptic potential A) resting period 1. e. neurons that innervate smooth muscle are under involuntary control. b. the blood-brain barrier Neurons that carry impulses the central nervous system to the muscles or glands are called neurons or motor neurons. The principles outlined above can be applied to the neuron and its ionic contents.. _____________ is a process for responding to brain injury. C) An excitatory postsynaptic potential occurs if the excitatory effect is greater than the inhibitory effect but less than threshold. Which of the following is not characteristic of neurons? (a) They Indicate the number of orbitals in the 6p sublevel. Therefore, the axon can release one or more neurotransmitters simultaneously, creating singular or multiple events. c. somatic nervous system. Which type of neurons are used to convey the special senses of sight? c. the thalamus. C) biogenic amine d. Neurogenetics. D) control the chemical environment around neurons 10. a. Axons b. Neurons c. Neuroglia d. Synapses e. Type A fibers, Which of the following parts of a neuron contain excitable membranes? Multiple sclerosis (MS) is a chronic inflammatory disease of the central nervous system (CNS) coined by inflammation and neurodegeneration. True or False, The nodes of Ranvier are found only on myelinated, peripheral neuron processes. c. Electrical impulses would be unable to travel down axons. B. Myelin prevents the conduction of electricity from the axon hillock to the axon terminal. What should the nurse explain to the patient regarding the role of serotonin and depression? b. What type of motor neuron stimulates skeletal muscle fibers to contract by the excitation contraction mechanism? All rights reserved. True or False, The action potential is caused by permeability changes in the plasma membrane. True or False, Some neurotransmitters can be either excitatory or inhibitory depending upon the receptor. Longevity 2. A drug that inhibited the reticular activating system would most likely cause: b. hypothalamus A. they produce neurotransmitters B. they lack neurotransmitter receptors C. they receive communication from other neurons D. they slow down the action potential. d. reduce cortical arousal. d. tremor. D) ATP and other purines D. Involved in fast-acting body control. which of the following is not characteristic of neurons? - OneClass While taking notes in class, a student had keep in mind what the professor had just stated in Which of the following will occur when an excitatory postsynaptic potential (EPSP) is being generated on the dendritic membrane? c. preganglionic terminals. Which neurons reside only within the CNS? Which of the following is not characteristic of neurons a 29. Which ion channel opens in response to a change in membrane potential and participates in the generation and conduction of action potentials? What market share did Mountainside have? c. Myasthenia Gravis. which ofthe following is correct? c. Cerebellum spindle fibres to divide the cell. d. Nuclei. analyzes sensory information, stores information, makes decisions. 74. Experts are tested by Chegg as specialists in their subject area. When a sensory neuron is excited by some form of energy, the resulting graded potential is called a(n) ________. d. support and brace neurons. However, the electrical impulses cannot pass directly from a nerve cell to the skeletal muscle cells to excite them. to axon segment Axon segment d. M1. b. hindbrain. a. neuromuscular junction. The axon hillock is located: c. pons Neuroglia perform supportive functions in the brain. b. M3 kg 1), . A neuron was found to originate in the hippocampus and terminate in the prefrontal cortex. Contains cells with macrophage activity c. Exhibits regenerative capacities d. Contains lymphatic vessel. 13. Diminished activation of postganglionic sympathetic neurons High mitotic rate B. Some neuroglia remove debris and foreign material from the nervous system. A) An inhibitory postsynaptic potential occurs if the inhibitory effect is greater than the excitatory, causing hyperpolarization of the membrane. b. Neurons would be unable to form the blood-brain barrier. ___________ are clusters of neuron cell bodies in the sympathetic and parasympathetic 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. C) They have an exceptionally high metabolic rate. d. endothelial cells., 2. Motor afferent neurons possess long dendrites and short axons. 80. a. medulla. When a gene is activated, a specific DNA segment is unraveled and transcribed onto: Growth of spiral ganglion neurons induced by graphene oxide/oxidized A patient is admitted to the hospital with exacerbation of multiple sclerosis (MS). If the electrode is removed, a potential of zero is recorded again. (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. a. increase the activity of reactive astrocytes. A) the impulse would move to the axon terminal only D. axon hillock. Neuroglia that control the chemical environment around neurons by buffering potassium and recapturing neurotransmitters are ________. What does myelin do for neurons? The reticular activating system includes all of the following structures except: Why? d. cingulate cortex. a. synapses. C) They increase amplitude as they move away from the stimulus point. The latter from the brain to the spinal cord. They have long fibers from CNS to ganglion. d. the structure is anterior to the area. An anesthetic protocol allowing electrophysiological singleunit recordings from inhibitory, presumably GABAergic PC interneurons in vivo is developed and may be useful for evaluation of PC neurons in kindled rats. This results in increased speed of impulse propagation. d. improve recovery from traumatic brain injury. a. improve working memory. 51. 1. A. thow ion selectivity C. are gated A. d. medulla. d. ventral root. B) Specific potassium gates will open. The oligodendrocytes can myelinate several axons. C) neurolemma Relative to the prefrontal cortex, the neuron would be called a(n): c. Myelination Which cranial nerve receives sensory information from the heart, liver, and intestines? d. astrocytes form and maintain the blood-brain barrier. B) The release of neurotransmitter molecules gives cells the property of being electrically coupled. Which of the following is NOT a function or characteristic of neurons? a. Schwann cells b. satellite cells c. microglia d. astrocytes e. oligodendrocytes f. ependymal cells. Transcription factors increase or decrease gene transcription. What are the advantages and disadvantages of Europe's communications systems? Preganglionic neurons are located in the brain stem and sacral segments of the spinal cord. D) lowering the threshold for an action potential to occur. 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. B) are found on "pathfinder" neurons d. proteins. Solved Which of the following is not a characteristic of | Chegg.com What is a credit line? Expert Answer. They conduct impulses. Its structure is multipolar. A) long distance signaling c. Oligodendrocytes a. Saltatory propagation occurs in _________ axons, in which action potentials _________. c. hindbrain. c. Dendrites and cell bodies are found in the lateral gray columns of thoracic and the firs, Which type of neuron transmits impulses from the central nervous system to effectors such as muscles and glands? c. it increases flow to highly active neurons. Imagine a neuron that has several hundred axonal knobs impinging on it. Show the details. Ans: they are mitotic Unli . Immediately after an action potential has peaked, which cellular gates open? Then, underline the verb in parentheses that agrees with the subject. A toxin that destroyed the presynaptic terminal on an axon would likely: 7. Cell bodies of sensory neurons may be located in ganglia lying outside the central nervous system. C) calcium a. it provides a protective cushion for the brain. Which of the following best describes the function of astrocytes? The synaptic cleft prevents an impulse from being transmitted directly from one neuron to another. c) Myelinated axons utilize fewer, Which of the following statements does not accurately desoribe a characteristic of the autonomic nervous system? Neurons: Which is not characteristic of neurons a high mitotic - Course Hero b. Neurotransmitters 4. c. Extrapyramidal System Chapter 2: The Nervous System Flashcards | Quizlet A person suffering from an inability to speak the word she intends to say, sometimes d. pineal gland. d. hippocampus. C) action potential B) They have extreme longevity. A) release nerve growth factor a. pituitary gland. The synapse more common in embryonic nervous tissue than in adults is the ________. What are the neuron functions for the peripheral nervous system? 77. What is a substance released from neurons that influences the sensitivity of neurons to neurotransmitters called? Discover and discuss the meaning of dendrites, axon, membrane polarization, membrane depolarization, and synapses. Learn about the neuron diagram, structure, and function. Unipolar neurons have axons structurally divided into peripheral and central processes, Neurons in the CNS are organized into functional groups, If bacteria invaded the CNS tissue, microglia would migrate to the area to engulf and destroy them, The nodes of Ranvier are found only on myelinated, peripheral neuron processes. Solved Which of the following is not characteristic of - Chegg Name the parts that comprise the elbow joint. d . A) astrocytes b. astrocytes respond to injury. c. pineal gland. d. represent a general decline of autonomic nervous system activity. Neuroglia found in the CNS that bind axons and blood vessels to each other are called ________. c. neurotrophins. The generation of an action potential in a neuron requires the presence what type of membrane channels? Just what does pass from the neuron to the muscle cells and, Which neuroglial cell type in the CNS is associated with many functions including support for neurons, forming a blood-brain barrier, secretion of neurotrophic factors, and uptake of K+ and neurotransmitters? a. I was doing so well." Which of the following is not a function of the autonomic nervous system? Classify neurons according to their structure. C) the impulse would spread bidirectionally Estimate the number of moles of Ar in a typical lightbulb. b. efferent neuron. 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 . 40. Which of the following is not a chemical class of neurotransmitters? Why does a hyperpolarization phase generally follow a repolarization phase in an action potential? a. Multi-polar neurons b. Bipolar neurons c. Uni-polar neurons. D) glial cell, Saltatory conduction is made possible by ________. Which of the following statements regarding nervous tissue is not true? b. Microglial cells a) axons b) dendrites c) Schwann cell d) cell body, Which of the following forms myelin in axons at PNS? B) endorphin c. sensory and motor neurons that su. D) size of action potentials, Bipolar neurons are commonly ________. A. Myelin insulates neurons, keeping them at a high enough temperature to function well. Site of mRNA translation for proteins of the axolemma c. Axon fibres are covered by a white sheath called myelin. A) They conduct impulses. a. Mitochondria in a neuron would no longer function. When excited electrically, the Hg atoms emit UV light, which excites the phosphor coating of the inner tube, which then emits visible (white) light. D) astrocytes, What does the central nervous system use to determine the strength of a stimulus? The person would have impaired movement while the drug's effects were active. 46. d. Vagus nerve. C) Neurotransmitter receptors are located on the axons terminals of cells. Which of the following types of glial cells monitors the health of neurons, and can transform into a special type of macrophage to protect endangered neurons? c. they form an insulating material around axons. It impacts your spinal cord and the nerves that transmit and receive messages between your brain and the rest of your body. A. a. b. Somatic Nervous System Motorneurons release acetylcholine at: b) Neurological cells protect and support neurons. What are the cells that transmit nerve impulses between parts of the nervous system? d. hippocampus. c. working memory. d. They are the same as any other cells. d) There, In order for skeletal muscle cells to contract, they must be excited by motor neurons. a. [PDF] Selective cold pain inhibition by targeted block of TRPM8 Expert Answer. Harvard University Laboratory Technician Job in Cambridge, MA | Glassdoor D) erratic transmission of nerve impulses, Which of the following is not a chemical class of neurotransmitters? specific or different from others in some way that they do not have. Required fields are marked. b. The landscaping business for the area totaled about$1,340,000 for the year. Which of the following plays an integral role in saltatory conduction? The cerebral cortex is located in the forebrain. d. implicit memory. What symptoms would a nurse focus on in his or her care of a patient with multiple sclerosis? A scientist who wanted to determine how inflammation in the brain was occurring in a 3. b. they prevent axons from re-growing. That part of the nervous system that is voluntary and conducts impulses from the CNS to the skeletal muscles is the ________ nervous system. The Quadratic Formula from Kinematics In this problem we show how the kinematic equations of motion can be used to derive the quadratic formula. Motor afferent neurons possess long dendrites and short axons. b. expect to find increased blood flow. 12. A. Myelin insulates neurons, keeping them at a high enough temperature to function well. Citation 17 - Citation 21 However, the effect of CH on axonal plasticity within the white matter following ischemic stroke is not known in detail. The majority of these axonal knobs are shown to be "firing." What is the function of dendrites in a neuron?