";s:4:"text";s:18030:"Which of the following is correct? A single type of channel will open, permitting simultaneous flow of sodium and potassium. D) The synaptic cleft prevents an impulse from being transmitted directly from one neuron to another. 34. The former make connections from the spinal cord to the muscles. a. sensory neuron b. interneuron c. motor neuron d. gland e. muscle. 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. Ans: they are mitotic Unli . Fill in the blank. a. Amygdala The substance released at axon terminals to propagate a nervous impulse is called a(n) ________. A) the impulse would move to the axon terminal only. d) There, In order for skeletal muscle cells to contract, they must be excited by motor neurons. What do ANS neurons regulate with regard to mechanical digestion? 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 neuron was found to originate in the hippocampus and terminate in the prefrontal cortex. In each of the following sentences, circle the phrase following the subject. a. neuromuscular junction. Damage to the hypothalamus may alter someone's motivation to eat. d. the hypothalamus. D) are crucial for the development of neural connections, An inhibitory postsynaptic potential (IPSP) is associated with ________. A Pyrex container is completely filled with 275cm3275 \mathrm{~cm}^3275cm3 of mercury at 10.0C10.0{\degree} \mathrm{C}10.0C. Which of the following is not characteristic of neurons? analyzes sensory information, stores information, makes decisions. d. They are the same as any other cells. . a. medulla. d. pineal gland. Nerve cell adhesion molecules (N-CAMs) ________. kg 1), . In doing so, mention: a) the names of the neurons involved, b) where the neurons synapse with each other (2 possible ganglia), c) what Nt is released from each of the neurons. 26. The parasympathetic nervous system prepares the body for rigorous activity. C) acetylcholine Which of the following conducts impulses to an effector? D) biogenic amine, A neuron that has as its primary function the job of connecting other neurons is called a(n) ________. The generation of an action potential in a neuron requires the presence what type of membrane channels? The p.N370S substitution causes a violation of the enzyme conformation, which affects its stability in the cell. True or False, Axon diameter and degree of myelination determine nerve impulse conduction velocity. c. nucleus accumbens. 2 introduce new . b. Ventral root c. Inhibited digestion Which of the following describes the ANS? c. Hypoglossal nerve (a) Cell body (b) Dendrites (c) Axon (d) All of the above are structural features of a neuron. a. b. on the soma. The interior of a neuron is composed of cytoplasm and a gel that is called. D) moves membrane potential away from threshold. d. astrocytes. Ganglia are on or near the target organ. What are the two(2) functional neuron types that are structurally multipolar neurons? The _________________ facilitates balance and the timing of movements. Hepatocytes and neurons express low baseline CB1R and CB2R, respectively, and their cell-type-specific functions are not well defined. b. Microglial cells A. Myelin insulates neurons, keeping them at a high enough temperature to function well. It stores energy reserves. Some axon terminals contain more than one kind of neurotransmitter. C. Skeletal muscles are responsible for the pumping action of the heart. B. Skeletal muscles store nutrient reserves. B. Two subtypes of motor neurons have been identified: inferior and superior. Strong stimuli cause the amplitude of action potentials generated to increase. True or False, Which of the following is not a function of astrocytes? a. tegmentum. d. Sympathetic ganglion, 24. d. M1. It impacts your spinal cord and the nerves that transmit and receive messages between your brain and the rest of your body. DI) They have an exceptionally high metabolic rate. D) the impulse would move to the axon terminal only, and the muscle contraction would occur, Which of the following neurotransmitters inhibits pain and is mimicked by morphine, heroin, and methadone? A severe tremor in someone's hands could be caused by abnormal functioning in the: Which of the following IS NOT a description of a neuron? The majority of these axonal knobs are shown to be "firing." 76. C) ganglia A) innervation of smooth muscle of the digestive tract In which area of the neuron is an action potential initially generated? d. oligodendrocytes fail to myelinate re-growing axons. A) motor neurons 4. 14. Which of the following is not a function of the autonomic nervous system? spindle fibres to divide the cell. The basal ganglia act to stabilize voluntary movements. c. sleepiness. In this issue, Zhao et al. 14. Neuroglia that control the chemical environment around neurons by buffering potassium and recapturing neurotransmitters are ________. A neuron that has as its primary function the job of connecting other neurons is called a(n) ________. (b) They have extreme longevity. C) biogenic amine d. improve recovery from traumatic brain injury. a. decrease a neurons's aerobic energy metabolism. a. interneuron. High mitotic rate B. What are the different types of neurons in the ANS and where are they located? Motor has two divisions: the somatic and autonomic. 2. b. Reactive astrocytes What are the properties of myelinated axons which makes them ideal for long-distance motor control of skeletal muscle? b. medulla B) chloride a. Basal ganglia 5. The term central nervous system refers to the ________. b. smooth muscle cells are uninucleated. (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. 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. The greater the density of spines along dendrites, the greater a neuron's: 5. A) astrocytes A neuron was found to originate in the hippocampus and terminate in the prefrontal cortex. c. Neuromuscular junction C) oligodendrocytes ___________ are clusters of neuron cell bodies in the sympathetic and parasympathetic a. ribosomes. b. cerebrospinal fluid. c. pons c. ventricles. Friedreich's ataxia is a rare disease that affects your central nervous system. b. reduce the activity of postganglionic sympathetic neurons. What are the basic divisions of the peripheral nervous system? Image credit: iStockphoto. 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. a.) If the electrode is removed, a potential of zero is recorded again. 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. Increased diameter results in increased surface area on the membrane for sodium channels. _____________ is the study of how genes support the function of neurons. The STN also forms a reciprocally connected network with the GABAergic external globus pallidus that converges onto common basal ganglia output neurons. Motorneurons release acetylcholine at: Which of the following are true about neurons? A researcher found that a drug increased heart rate. Begin by sketching the contour. Inhibitory postsynaptic potentials (IPSPs) are "firing," but due to the neurotransmitter released and its action, the postsynaptic neuron is inhibited from "firing" (hyperpolarized). The part of a neuron that sends neurotransmitters into a synapse is called a(n): 6. Name the following: Nervous tissue cells that regulate the chemical environment of neurons. likely true? A) An inhibitory postsynaptic potential occurs if the inhibitory effect is greater than the excitatory, causing hyperpolarization of the membrane. 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. What is the function of dendrites in a neuron? What symptoms would a nurse focus on in his or her care of a patient with multiple sclerosis? d. Sensory efferent neurons po. Potentials that are short-lived, local changes in membrane potential that can be either depolarized or hyperpolarized are called ________ potentials. The oligodendrocytes can myelinate several axons. Just from looking down a microscope, however, it becomes very clear that not all neurons are the same. Group of answer choices: Neuroglia refer to neurons with axons coated in myelin. Glial scars may impair recovery from brain injury because: Which of the following is NOT a function or characteristic of neurons? B) norepinephrine Which of the following is not true of graded potentials? a. innervation of skeletal muscle. ANSWER : The neurons are included in the somatic body cells but are. 10. These cells have a star-like shape and a central body that contains the . A) peripheral and spinal nerves B) brain, spinal cord, and peripheral nerves C) brain and spinal cord D) spinal cord and spinal nerves. a. Neurons communicate with other neurons in the central nervous system. 49. 2. 9. 12. c. the structure is further out to the side of the brain. The interior is ________. A) nuclei According to the signal, carried by motor nerves to effector organs, the muscles and glands . Numerous Nissl bodies were observed, indicating that the neurons had a high ability to synthesize proteins. The cerebral cortex is located in the forebrain. Which of the following is not characteristic of neurons? d. hypothalamus. View the full answer. 68. What are ciliated CNS neuroglia that play an active role in moving the cerebrospinal fluid called? A) act as a transmitting agent Saltatory conduction is made possible by ________. Transcribed image text: Which of the following is not a characteristic of neurons? B) synapse B) amplify or enhance the effect of ACh C) brain and spinal cord Which of the following is correct? A) mechanically gated channel A neuron consists of a nucleus, a region of tissue that contains the cell body. mastering a&p- chapter 11 (part of 12) EXAM 5, Anatomy & Physiology Test 2: Tissues & Integu, UTA Biol 2458- A&P 2 Aranda Test review 1, Mastering Homework Questions and Notes: Actio, The Language of Composition: Reading, Writing, Rhetoric, Lawrence Scanlon, Renee H. Shea, Robin Dissin Aufses, Edge Reading, Writing and Language: Level C, David W. Moore, Deborah Short, Michael W. Smith. d. support and brace neurons. d. a transcription factor. a. Sensory neurons. Select all that apply. formation. d. medulla. What is the functional neuron type that is the most prevalent in the CNS? b. the structure is closer to the midline of the brain. In the presence of invading microbes, microglial cells become macrophages to phagocytize the microbes and neuronal debris. acetylcholine Unipolar,Bipolar,Multipolar. 43. 15. 13. Different types of neurons include sensory, motor, and interneurons, as well as structurally-based neurons, which include unipolar, multipolar, bipolar, and pseudo-unipolar neurons. Neurons are the cells that make up the brain and the nervous system. Citation 17 - Citation 21 However, the effect of CH on axonal plasticity within the white matter following ischemic stroke is not known in detail. d. cause a tremor. b) Neurological cells protect and support neurons. True or False, If bacteria invaded the CNS tissue, microglia would migrate to the area to engulf and destroy them. Is the information in this quote about afferent of efferent? depolarized to c. basal ganglia. A drug that reduces the activity of the amygdala would likely: 2. a. Activation of preganglionic sympathetic neurons Neurons may be classified according to several characteristics. A) support and brace neurons d. acetylcholine. a. epigenetics. Estimate the mass of Hg vapor present in the type of long, thin fluorescent tubes used in offices. We investigated here the direct and differential effects of inflammatory mediators on human neurons. alternations to DNA sequences? 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? B) The release of neurotransmitter molecules gives cells the property of being electrically coupled. 8. 47. (c) They have an exceptionally high metabolic rate. A postsynaptic potential is a graded potential that is the result of a neurotransmitter released into the synapse between two neurons. This area is also known as the soma or perikaryon. threshold Voltage-gated Na+ A. 7. What is a substance released from neurons that influences the sensitivity of neurons to neurotransmitters called? Neurotransmitters are chemical signals used as a means of communication. d. The person may have motor tremor. D. Association Central Nervous System. (organalle) inside them, which is necessary to formation of mitotic. a. receives input from sensory neurons b. directs activity of motor neurons that innervate muscles and glands c. contains association neurons within the brain and spinal cord d. conta, Which of the following is not a function of astrocytes? nervous system. The concentration of __ is higher inside than outside the cell. a. motor fibers that conduct nerve impulses from the CNS to smooth muscle, cardiac muscle, and glands. Sensory and motor divisions. Which of the following is the study of mechanisms of gene expression not involving 60. d. M1 microglial cells. Specialized cells in the nervous system that control behavior, senses, and movement are. 1. What is the direct role of neurotransmitter at a chemical synapse? Their basic function is to receive and transmit information through electrical impulses. a. alertness. Both excitatory and inhibitory potentials impinge on neurons. 10. 78. Which of the following is not a function of the autonomic nervous system? a. Dendrites and axon March 17, 2022. 44. Which of the following is not characteristic of neurons? b. sulci. Briefly describe 6 effects this division has on the body. Which of the following statements is incorrect? It is important when reducing any model to first identify these characteristic behaviours. 18. The part of a neuron that conducts impulses away from its cell body is called a(n) ________. Which of the following is false or incorrect? The axon c. The dendrites d. The Nissl bodies. Classify Neurons by 3 Structures. Which of the following is NOT a function or characteristic of neurons? Myelination of the nerve fibers in the central nervous system is the job of the oligodendrocyte, Efferent nerve fibers may be described as motor nerve fibers. a. M4 A) Cells with gap junctions use chemical synapses. Some ions are prevented from moving down their concentration gradients by ATP-driven pumps. a. Somatic Nervous System Site of mRNA translation for proteins of the axolemma c. Axon fibres are covered by a white sheath called myelin. Neurotransmitter binds to receptors on the postsynaptic cell membrane and allows ions to diffuse across the membrane. Multiple Choice. c. a ventricle. The point where a motor neuron meets a muscle fiber is called the: b. polymorphism. c. Generate ATP. The part of a neuron that conducts impulses away from its cell body is called a (n) ________. The resting membrane potential is maintained by Na+-K+ pumps that actively transport __ into and ___ out of the cell. help to circulate the cerebrospinal fluid. 58. We studied the biochemical characteristics of dopaminergic (DA) neurons generated from induced pluripotent stem cells (iPSCs) from a PD . c. the person had a past traumatic brain injury. - Neurons have a cell body, which contains the majority of the cell's organelles. D. axon hillock. The synapse more common in embryonic nervous tissue than in adults is the ________. c. that a person is genetically male. You'll get a detailed solution from a subject matter expert that helps you learn core concepts. Saltatory propagation occurs in _________ axons, in which action potentials _________. What functional class of neuron carries impulses away from the CNS to muscles or glands? Which of the following are functions of the CNS? The nucleus accumbens facilitates fear and aggression. 23. According to the humidity characteristics of PEMFC, Vinu et al. C) opens K+ or Cl- channels Describe the structure of neurons 2. Which of the following is an EXCITATORY neurotransmitter secreted by motor neurons innervating skeletal. The hypothalamus is located in the: The substance released at axon terminals to propagate a nervous impulse is called a (n) ________. What are the different classes of neurons and their functions? C) voltage stimulus to initiate A) acetylcholine In general, neurons cannot be replaced if destroyed. described as having a word on the tip of your tongue, might have abnormal functioning in the: A. they produce neurotransmitters B. they lack neurotransmitter receptors C. they receive communication from other neurons D. they slow down the action potential. 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