b. forebrain. A disorder that damaged oligodendrocytes would be expected to impede neurotransmission. Damage to the hypothalamus may alter someone's motivation to eat. depolarized to d. it fills spaces in the brain. a. Dendrite b. b. Neurons would be unable to form the blood-brain barrier. b. cerebellum. 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) long distance signaling Expert Answer. B. axon. In terms of function, scientists classify neurons into three broad types: sensory . Friedreich's ataxia is a rare disease that affects your central nervous system. C) They increase amplitude as they move away from the stimulus point. b. Preganglionic neurons are short and synapse in ganglia located near the spinal cord. e. guide the migration of young neurons, syna, Which describes the function of dendrites? Begin by sketching the contour. What are the neuron functions for the peripheral nervous system? a. Dendrites and axon Responding to brain injury is an important function of astrocytes. Demyelination interferes with saltatory conduction, which would result in a slowing down of nerve impulse propagation. They control, in this way, from the movement of an arm, thoughts and even feelings through electrical signals that are called nerve impulses. A severe tremor in someone's hands could be caused by abnormal functioning in the: 2. The prefrontal cortex is important for working memory function. Specialized cells in the nervous system that control behavior, senses, and movement are called: a. neurons. Which of the following is not a function of the autonomic nervous system? A) Sensory neuron B) Motor neuron C) Interneuron D) All of the above. The p.N370S substitution causes a violation of the enzyme conformation, which affects its stability in the cell. Identify the neuron type described: A functional neuron type most prevalent in the CNS. C) leakage channel Collections of nerve cell bodies in the peripheral nervous system are called ________. D) spinal cord and spinal nerves, The substance released at axon terminals to propagate a nervous impulse is called a(n) ________. c. basal ganglia. c. the structure is further out to the side of the brain. a. tegmentum. You'll get a detailed solution from a subject matter expert that helps you learn core concepts. 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. Which pattern of neural processing is important for higher level mental processing such as problem solving? c. Extrapyramidal System Discovering that early life stress may cause polymorphisms that increase the risk of Therefore, the axon can release one or more neurotransmitters simultaneously, creating singular or multiple events. a. Neurogenetics B) are found on "pathfinder" neurons Which functional classification of neurons is the most numerous? A toxin that destroyed the presynaptic terminal on an axon would likely: 7. the afferent division of the nervous system. When activated, shortens C. Found in the brain and spinal cord. B) the Na ions have been pumped back into the cell D) They can be called postsynaptic potentials. d. frontal lobe. stem c.) muscles d.) osteocytes. As you start working out, you notice that your heart rate and breathing rate start to increase. Which of the following is not a characteristic of neurons? In this study we evaluated if motor and sensory neurites have a substrate preference for laminin and . Then, underline the verb in parentheses that agrees with the subject. b) The preganglionic neuron (sometimes called the ganglionic neuron), is the second motor neuron. What does the central nervous system use to determine the strength of a stimulus? D) stimulate the production of acetylcholine, Which of the following is not a function of the autonomic nervous system? D) tracts, The term central nervous system refers to the ________. The synaptic cleft b. B) large nerve fibers a. C) association neuron Structural Functional Characteristics of Nervous and Glial Cells d. Neurogenetics. Which cell causes endothelial cells to fit closely together? Which of the following is correct? Solved Which of the following is NOT a characteristic of - Chegg Neurons are relatively small, simple-structured cells. A substance that directly activates gene transcription is likely acting as a: Which of the following is false or incorrect? Which of the following is not a structural feature of a neuron? (a Which of the following statements is incorrect? 6. . b. expect to find increased blood flow. 1. 8. A. thow ion selectivity C. are gated A. d. The person may have motor tremor. A. b. smooth muscle cells are uninucleated. PDF Quiz 42, Understanding Motor SystemsSR - SNACC 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? b. Ventral root d. medulla. a. Alzheimer's disease. c. reticular formation. b. medulla B) They can form on receptor endings. A) peripheral and spinal nerves A) resting period What are the cells that transmit nerve impulses between parts of the nervous system? D) nitric oxide, Which of the following describes the excitatory postsynaptic potential? Free Flashcards about ap chap 11 - StudyStack A) release nerve growth factor They conduct impulses. 3 special characteristics of neurons. Which of the following is not a function of astrocytes? B) type of stimulus receptor If an experimental drug produced physiological effects similar to nitric oxide, then a Which of the following is true about the movement of ions across excitable living membranes? Which division of your nervous system is generating this response? A) the membrane potential has been reestablished a. norepinephrine. B. Skeletal muscles store nutrient reserves. d. Extrapyramidal System. A) the myelin sheath Which of the following is not a structural feature of a neuron? Crosstalk between m6A mRNAs and m6A circRNAs and the time-specific b. Pons A) cell body a. motor fibers that conduct nerve impulses from the CNS to smooth muscle, cardiac muscle, and glands. D) ligand-gated channel, An impulse from one nerve cell is communicated to another nerve cell via the ________. A) astrocytes C) negatively charged and contains more sodium d. gray matter. Which of the choices below describes the ANS? They propel cellular components along microtubules. Which of the following is a factor that determines the rate of impulse propagation, or conduction velocity, along an axon? d. ribosome transcription. ATP-dependent "motor" proteins such as kinesin, dynein, and myosin are responsible. ______________ are chemicals that promote the growth and development of neurons. just need the answer 21.Characteristics that vary on a 51. d. parasympathetic nervous system. 1. destroy ACh a brief period after its release by the axon endings. kg 1), . A) axon B) dendrite C) neurolemma DI) Schwann cell. However, the electrical impulse cannot pass directly from a nerve cell to the skeletal muscle cells to excite them. Do not divide - (neural stem cells are an exception) 3. spindle fibres to divide the cell. Like the heart, lungs, and stomach, the nervous system is made up of specialized cells. First, consider an object with an initial position x0x_0x0, an initial velocity v0v_0v0, and an acceleration aaa. b. transcription factors. What are the functional classifications of neurons? Introduction to Neurons and Neuronal Networks | Section 1, Intro It impacts your spinal cord and the nerves that transmit and receive messages between your brain and the rest of your body. Why does injection of a local anesthetic into a finger still cause a loss of the sensation of touch from the finger? C) sensory neurons that convey information from somatic receptors in the head, body wall, and limbs and from receptors from the special senses of vision, hearing, taste, and smell to the CNS The _________________ facilitates balance and the timing of movements. a) Myelin insulates neurons, keeping them at a high enough temperature to function well. Neuroglia that control the chemical environment around neurons by buffering potassium and recapturing neurotransmitters are ________. What does myelin do for neurons? c. Autonomic Nervous System a) Myelinated axons transmit nerve impulses via continuous conduction. Response characteristics of subthalamic neurons to the stimulation of What is the role of microglial cells and why are they so important in the CNS? a. Doral root The pons is activated when someone startles. While taking notes in class, a student had keep in mind what the professor had just stated in d. proteins. c. epigenetic stimulus. inability to divide by mitosis long cell life span (longevity) high aerobic metabolic rate ability to survive in anaerobic (Uithout oxygen) conditions. A) postsynaptic potential d. that a person has autochromosomal traits. c. The output (. a. Trigeminal nerve which of the following is not characteristic of neurons? - OneClass 80. Fill in the blank. Answer: They are constantly dividing Explanation: Neurons are like different cells in the body on the grounds that: Neurons are encircled by a cell . The frequency of impulse transmission indicates the stimulus intensity and the brain responds appropriately. Which of the following is not characteristic of neurons? Correct option is C) Sensory neurons receive sensory inputs from the internal and external environment and transmit it to CNS (brain and spinal cord) for processing. Which of the following is not found in the limbic system? d. Neurons. b. it provides a medium for nutrients to cells. What are the small lower motor neurons that innervate intrafusal muscle fibers that are part of specialized stretch receptors called? Which of the following is not true of graded potentials? a) axon b) axon hillock c) dendrites d) soma, Which of the following is not a structural feature of a neuron? to axon segment Axon segment If a physician identified her patient as a low drug metabolizer, which of the following is most Has component cells designed for conductivity b. d. the hypothalamus. High metabolic rate. What are the different classes of neurons and their functions? b. glial cells. B) oligodendrocytes Sensory Neurons Motor Neurons Inter-Neurons Which of the following describes the excitatory postsynaptic potential? c. cause imbalance. 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? Required fields are marked. They are robust signaling cells. The latter from the brain to the spinal cord. Which cells in the brain remove normal cellular waste? The actual cause of the neurodegenerative component of the disease is however unclear. We used embryonic stem cell-derived (H9) human neuronal stem cells . 77. C) biogenic amine The hills on the surface of the brain are referred to as: A neuron is a cell that communicates with the brain. analyzes sensory information, stores information, makes decisions. b. Neurotrophins Types of neurons - Queensland Brain Institute A. D) astrocytes, Immediately after an action potential has peaked, which cellular gates open? 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? c. Myelination Immediately after an action potential has peaked, which cellular gates open? Which of the following is NOT a function of astrocytes? d. The patient is at risk of a Mendelian disease. (d) All of these are characteristic of neurons. Which of the following is NOT characteristic of the sympathetic division of the autonomic nervous system? Which of the following best describes the function of astrocytes? In general, neurons cannot be replaced if destroyed. d. gyri. (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.