That is, they have a single axon and many dendrites. ___________ are clusters of neuron cell bodies in the sympathetic and parasympathetic a. Which of the following is not characteristic of neurons? (a) They The pathogenesis of the sudden disruption of neurologic function is unknown; it probably involves dysregulation of the reticular activating system in . C) oligodendrocytes True or False, Unipolar neurons have axons structurally divided into peripheral and central processes. a. medulla. Which of the following is NOT a characteristic of neurons? A) They have Which of the following is not a characteristic of neurons? A. excitability B. neurotransmitter production C. high energy needs D. capability of mitosis. Which of the following is an excitatory neurotransmitter secreted by motor neurons innervating skeletal muscle? 25 26 Which of the following is not a special characteristic of neurons Which of the following is an EXCITATORY neurotransmitter secreted by motor neurons innervating skeletal. Name the parts that comprise the elbow joint. Which Of The Following Is Not Characteristic Of Neurons A drug that caused someone to make a reckless decision might be affecting the: 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. Which component has a role in the postsynaptic cell during synaptic activity? Expert Answer. a. synapses. 2. 13. 2 introduce new . a. neuromuscular junction. Which of the following is true about the movement of ions across excitable living membranes? Different types of neurons include sensory, motor, and interneurons, as well as structurally-based neurons, which include unipolar, multipolar, bipolar, and pseudo-unipolar neurons. Get access to this video and our entire Q&A library. Transcription factors increase or decrease gene transcription. If a drug severely depressed the functioning of the medulla, which of the following might be In which area of the neuron is an action potential initially generated? Cells may have long extensions. True or False, The autonomic nervous system is under voluntary control; whereas, the somatic nervous system is involuntary. Upper motor neurons are classified according to the pathways they travel in C. The Babinski response is not characteristic of paralysis from UMN lesions Saltatory conduction is made possible by ________. 9. From a historical standpoint, no other cell type has attracted as much attention or caused as much controversy as the nerve cell. Cerebrospinal is located in the following structures except: It is impossible in a single chapter to delineate comprehensively the extensive structural, topographical and functional variation achieved by this cell type. b. Sensory afferent neurons possess long dendrites and short axons. Neurons may be classified according to several characteristics. d. support and brace neurons. Briefly describe 6 effects this division has on the body. Immediately after an action potential has peaked, which cellular gates open? b. medulla. Oligodendrocytes form and maintain the blood-brain barrier. Answer: Option D is correct Explanation: Neurons generally do not e. A severe tremor in someone's hands could be caused by abnormal functioning in the: Multiple sclerosis (MS) is a chronic inflammatory disease of the central nervous system (CNS) coined by inflammation and neurodegeneration. What are the different types of motor neurons? 47. threshold Voltage-gated Na+ 60. 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. 22. d. tremor. Schwann cells are functionally similar to ________. a) ion b) cholinesterase c) neurotransmitter d) biogenic amine. A) cholinesterase The hypothalamus is located in the: d. temporal lobe. D) positively charged and contains more sodium, If a motor neuron in the body were stimulated by an electrode placed about midpoint along the length of the axon ________. A researcher found that a drug increased heart rate. A) axon B) dendrite C) neurolemma DI) Schwann cell. 64. Which cell causes endothelial cells to fit closely together? a. Pupil dilation [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 part of a neuron that sends neurotransmitters into a synapse is called a(n): 6. lowers the probability of producing an action potential. Neurotransmitter is released from presynaptic neurons through what mechanism? In your opinion, is "A Christmas Memory" merely a vivid portrayal of a memory, or does it also convey a theme, or message? c. The person would later be unable to recall events that took place for some period of time after What is the role of microglial cells and why are they so important in the CNS? Which of the following is not characteristic of neurons? If a physician identified her patient as a low drug metabolizer, which of the following is most Spiral ganglion neurons (SGNs) play a vital role in conveying complex information from hair cells to the brainstem (Shrestha et al., 2018).As the injury or degeneration of SGNs is particularly devastating to hearing function, thus the repair of SGNs is of great importance in hearing-related biomedical fields (Petitpre et al., 2018; Wei et al., 2021). a. temporal lobe. B) The release of neurotransmitter molecules gives cells the property of being electrically coupled. c. reduced oxygen delivery to cells. C) serotonin However, the electrical impulse cannot pass directly from a nerve cell to the skeletal muscle cells to excite them. A) Sensory neuron B) Motor neuron C) Interneuron D) All of the above. d. gray matter. Which of the following is false or incorrect? When excited electrically, the Hg atoms emit UV light, which excites the phosphor coating of the inner tube, which then emits visible (white) light. What is the direct role of neurotransmitter at a chemical synapse? a. A patient was admitted for depression. After peripheral nerve injuries, damaged axons can regenerate but functional recovery is limited by the specific reinnervation of targets. It also affects your cerebellum, the part of your brain that controls movement and balance. A) the impulse would move to the axon terminal only Like the heart, lungs, and stomach, the nervous system is made up of specialized cells. b. thalamus. Myelinated neurons conduct impulses faster than unmyelinated neurons because? Relative to the prefrontal cortex, the neuron would be called a(n): c. olfactory information. Imagine a neuron that has several hundred axonal knobs impinging on it. Which division of your nervous system is generating this response? 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. Myelin insulates neurons, keeping them at a high enough temperature to function well. The oligodendrocytes can myelinate several axons. Choose the correct order of these events below. 2. D) voltage regulated repolarization, Neuroglia that control the chemical environment around neurons by buffering potassium and recapturing neurotransmitters are ________. c. cause the release of neurotrophins. d. cause a tremor. Functions. High metabolic rate. C) Sodium gates will open first, then close as potassium gates open. What is an example of a presynaptic cell? A) motor neurons Identify the cell type below that assists the function of neurons and has a supportive role within the nervous system? a. Mitochondria in a neuron would no longer function. Contains lymphatic vessel. Which of the following is not a characteristic of neurons The autonomic nervous has control centers in the: B. A single type of channel will open, permitting simultaneous flow of sodium and potassium. A) a change in sodium ion permeability Characteristics and Function of Neurons - Step To Health A. they produce neurotransmitters B. they lack neurotransmitter receptors C. they receive communication from other neurons D. they slow down the action potential. analyzes sensory information, stores information, makes decisions. The autonomic has two divisions: the sympathetic and parasympathetic. copyright 2003-2023 Homework.Study.com. Chapter 11 Test Questions Flashcards | Quizlet Site of mRNA translation for proteins of the axolemma c. Axon fibres are covered by a white sheath called myelin. A person suffering from an inability to speak the word she intends to say, sometimes A. If a person ingested a substance that temporarily impaired the functioning of the People throughout history (has, have) been fascinated by the moon. O They generate very fast O They are long when compared to other cells in the body O They help carry oxygen to different body parts O They do not have a nucleus. E) nucleic acid. c. sleepiness. the membrane potential has been reestablished. . (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? 44. What is the function of dendrites in a neuron? All of the following describe functions for cerebrospinal fluid except: 3. Which of the following describes the ANS? Anatomy and Physiology questions and answers. d. it fills spaces in the brain. All rights reserved. (d) All of these are characteristic of neurons. B) muscle contraction would occur B) They have extreme longevity. d. Sensory, Which neuron structure receives impulses from the preceding cell? a. Oligodendrocytes ________ are found in the CNS and bind axons and blood vessels to each other. A) postsynaptic potential c. occipital lobe. a. that a person will have a polymorphism. 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. c. they form an insulating material around axons. a. medulla. They are robust signaling cells. The parasympathetic division includes the splanchnic nerves. Which of the following is NOT a type of circuit? They conduct impulses. Large-diameter nerve fibers conduct impulses much faster than small-diameter fibers. b. the blood-brain barrier D) tracts, The term central nervous system refers to the ________. Just what does pass from the neurons to the muscle c. Neurons are specialized cells that can do which of the following that most other cells cannot do? A scientist who wanted to determine how inflammation in the brain was occurring in a D) gamma aminobutyric acid, Which of the following describes the nervous system integrative function? D) glial cell, Saltatory conduction is made possible by ________. b. medulla Identify the neuron type described: A functional neuron type most prevalent in the CNS. Which of the following stimuli caused the reaction in the graph on the left? Which of the following is NOT a characteristic of epithelial tissue? Substratum preferences of motor and sensory neurons in postnatal and WHICH OF THE FOLLOWING IS TRUE REGARDING UMNS ? 42. D) ligand-gated channel, An impulse from one nerve cell is communicated to another nerve cell via the ________. In myelinated axons the voltage-regulated sodium channels are concentrated at the nodes of Ranvier. a. Microglial cell activation 49. (organalle) inside them, which is necessary to formation of mitotic. D) They are mitotic. 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. Aim: The Combining Mechanisms for Better Outcomes randomized controlled trial assessed the effectiveness of various spinal cord stimulation (SCS) modalities for chronic pain. It is important when reducing any model to first identify these characteristic behaviours. Describe the structure of neurons 2. Give a valid explanation of why this could occur. C) An inhibitory postsynaptic potential occurs if the inhibitory effect is greater than the excitatory, causing hyperpolarization of the membrane. d. hippocampus. How can a single axon respond to several different kinds of events? The parasympathetic nervous system prepares the body for rigorous activity. b. Myelin prevents conduction of electricity from the axon hillock to the axon terminal. When a sensory neuron is excited by some form of energy, the resulting graded potential is called a(n) ________. C) They are mitotic. D) size of action potentials, Bipolar neurons are commonly ________. Which type of neurons are used to convey the special senses of sight? Identify the neuron type described: Two functional neuron types that are structurally multipolar neurons. The function of neurons is to communicate information from one part of the body to other parts. Which of the following portions of the neuron transmits neurotransmitters? alternations to DNA sequences? Question. b. thalamus. A&P EXAM 1 Ch 11,12,13,15 Flashcards | Quizlet Many drugs that produce highly enjoyable effects likely do so by affecting the: D) sensory and motor neurons that supply the digestive tract, What are ciliated CNS neuroglia that play an active role in moving the cerebrospinal fluid called? d. inferior colliculus. Name the two other neuron types which are cholinergic. A) resting period Ans: they are mitotic Unli . A) long distance signaling 72. B) A nerve impulse occurs if the excitatory and inhibitory effects are equal. What type of channel on the postsynaptic membrane binds neurotransmitter? B) cholinesterase A neuron is formed when a receptor ends on another cell becomes active. nervous system? According to the signal, carried by motor nerves to effector organs, the muscles and glands . 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? stem c.) muscles d.) osteocytes. b. Somatics Characteristics of the Neuron - Basic Neurochemistry - NCBI Bookshelf Some axon terminals contain more than one kind of neurotransmitter. Expert Answer. Which of the following statements is true? B) excitatory potential D) spinal cord and spinal nerves, The substance released at axon terminals to propagate a nervous impulse is called a(n) ________. C) opening of voltage-regulated channels C) receptor Which of the following statements regarding nervous tissue is not true? a. parietal lobe. d. Neurogenetics. Which of the following lists the components found in a synapse? c. nucleus accumbens. They have extreme longevity. Which nervous system subdivision is a chain of two motor neurons consisting of a preganglionic and a postganglionic neuron? Reflexes are rapid, automatic responses to stimuli. B) anchor neurons to blood vessels a. impair memory. c. end terminus. B) muscle contraction would occur. Its structure is multipolar. Study with Quizlet and memorize flashcards containing terms like 1. What mechanism is responsible for axonal transport?