Large-diameter nerve fibers conduct impulses much faster than small-diameter fibers. b. D. Skeletal muscles supports the weight of some internal organs. 75. a. the hippocampus. A. Current flows continuously, Local current flows a) motor fibers that conduct nerve impulses from the CNS to smooth muscle, cardiac muscle, and glands b) motor fibers that conduct nerve impulses from the CNS to skeletal muscles c) sensory and motor neurons t. 1. Damage to the hypothalamus may alter someone's motivation to eat. Which of the following is not characteristic of neurons? Tight junctions along blood vessels in the brain are formed by: 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 . b. Constricted airways b. transcription factors. having a low appetite. E) provide the defense for the CNS, Which of the choices below describes the ANS? c. pons c) Myelinated axons utilize fewer, Which of the following statements does not accurately desoribe a characteristic of the autonomic nervous system? This protective role is important because cells of the immune system are denied access to the CNS. Name two amino acid neurotransmitters, two catecholamines, and two peptides. a) norepinephrine b) cholinesterase c) gamma aminobutyric acid d) acetylcholine. A. Sensory. 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? 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. Which component has a role in the postsynaptic cell during synaptic activity? b. the medulla. Myelination of the nerve fibers in the central nervous system is the job of the oligodendrocyte. Increased diameter results in increased surface area on the membrane for sodium channels. What distinguishes nerve cells and other excitable membranes (e.g., muscle cells) is that they are capable of changing their resting potential. Which of the following would NOT be an example of having an activated sympathetic Which of the following is not a function of astrocytes? 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. 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. Which of the following is true about the movement of ions across excitable living membranes? The GBA gene encodes the lysosomal enzyme glucocerebrosidase (GCase). WHICH OF THE FOLLOWING IS TRUE REGARDING UMNS ? A) They conduct impulses. depolarized to d. The patient is at risk of a Mendelian disease. Which of the following portions of the neuron transmits neurotransmitters? A) An inhibitory postsynaptic potential occurs if the inhibitory effect is greater than the excitatory, causing hyperpolarization of the membrane. Which of the following is an EXCITATORY neurotransmitter secreted by motor neurons innervating skeletal. a. the thin filaments of smooth muscle fibers are attached to dense bodies. c. Motor efferent neurons possess long dendrites and short axons. c. pineal gland. a. Epigenetic markers spindle fibres to divide the cell. B) norepinephrine b. ventricles. a. periaqueductal gray. Its structure is multipolar. A neuron was found to originate in the hippocampus and terminate in the prefrontal cortex. researcher would: Which nervous sytem is responsible for delivering voluntary motor signals from the CNS to These neurons are inhibitory neurons, meaning they release neurotransmitters that keep other neurons from firing. hippocampus, which of the following would most likely be the result? b. Pons B) anchor neurons to blood vessels What is the function of upper motor neurons? The principles outlined above can be applied to the neuron and its ionic contents.. B. Myelin prevents the conduction of electricity from the axon hillock to the axon terminal. 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. striations present are due to the orderly arrangement of actin and myosin. a. Microglial cell activation B) chloride B) amplify or enhance the effect of ACh 35. Visual disturbances, paralysis, and weakness, Elliot Aronson, Robin M. Akert, Samuel R. Sommers, Timothy D. Wilson, Elliot Aronson, Robin M. Akert, Timothy D. Wilson. b. Sensory afferent neurons possess long dendrites and short axons. What are the advantages and disadvantages of Europe's communications systems? Which of the following is NOT a function or characteristic of neurons? c. in the synapse. They conduct impulses. However, the electrical impulses cannot pass directly from a nerve cell to the skeletal muscle cells to excite them. c. interneurons make inhibitory connections with damaged neurons. specific or different from others in some way that they do not have. D) control the chemical environment around neurons Which of the following is NOT a characteristic of neurons? c. Astrocytes c. neurons. Neurons are a specific type of nervous system cell that is able to generate signals and transmit them to other neurons or target end-cells. (a) They conduct impulses. Which of the following is the study of mechanisms of gene expression not involving a. Schwann cells b. satellite cells c. microglia d. astrocytes e. oligodendrocytes f. ependymal cells. Which of the following is correct? d. gyri. C) Sodium gates in the membrane can open in response to electrical potential changes. What are the two(2) functional neuron types that are structurally multipolar neurons? Answer: They are constantly dividing Explanation: Neurons are like different cells in the body on the grounds that: Neurons are encircled by a cell . People throughout history (has, have) been fascinated by the moon. Discover and discuss the meaning of dendrites, axon, membrane polarization, membrane depolarization, and synapses. A) ependymal cells Enkephalins and endorphins are peptides that act like morphine. What type of channel on the postsynaptic membrane binds neurotransmitter? Choose the correct order of these events below. 15. Discovering that early life stress may cause polymorphisms that increase the risk of d. They are the same as any other cells. your answer. 14. Efferent nerve fibers may be described as motor nerve fibers. Name the parts that comprise the elbow joint. Which of the following is false or incorrect? B) They can form on receptor endings. A substance that inhibits the activity of the cerebellum would be expected to: There are three types of neurons. 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. b. sympathetic nervous system. d) There, In order for skeletal muscle cells to contract, they must be excited by motor neurons. . b. Responding to brain injury is an important function of astrocytes. 67. b. smooth muscle cells are uninucleated. What do neurons synapse with? The human body is made of about 100 billion neurons. c. Motor efferent neurons possess long dendrites and short axons. b. increasing glial scarring. Longevity 2. a. Amygdala Motor afferent neurons possess long dendrites and short axons. lowers the probability of producing an action potential. d. pituitary gland. Multiple sclerosis (MS) is a disease in which the myelin sheaths are destroyed. 15. Melatonin is released from the: Which of the following statements is true? Which of the following is not characteristic of neurons? Some neuroglia remove debris and foreign material from the nervous system. 30. 2. a. polymorphisms. Some axon terminals contain more than one kind of neurotransmitter. d. endothelial cells., 2. Classify Neurons by their Function. The parasympathetic division includes the splanchnic nerves. From a historical standpoint, no other cell type has attracted as much attention or caused as much controversy as the nerve cell. What are ciliated CNS neuroglia that play an active role in moving the cerebrospinal fluid called? A postsynaptic cell can be a neuron, a muscle cell, or a secretory cell. Which of the following would be most likely to increase heart rate? c. working memory. True or False, Which of the following is not a function of astrocytes? a. visual information. What are the different types of neurons in the ANS and where are they located? c. genes. a. Multi-polar neurons b. Bipolar neurons c. Uni-polar neurons. B. Skeletal muscles store nutrient reserves. Events that occur during synaptic activity are listed here, but they are arranged in an incorrect order. Anatomy and Physiology questions and answers. (a) Fluorescent lightbulbs contain a small amount of mercury, giving a mercury vapor pressure of around 1*10^(-5) atm. a) axons b) dendrites c) Schwann cell d) cell body, Which of the following forms myelin in axons at PNS? D) astrocytes, Immediately after an action potential has peaked, which cellular gates open? d. Hypothalamus, 37. D) They can be called postsynaptic potentials. They control, in this way, from the movement of an arm, thoughts and even feelings through electrical signals that are called nerve impulses. They propel cellular components along microtubules. Image credit: iStockphoto. d. Neurotrophins. Which of the following IS NOT a description of a neuron? C) An inhibitory postsynaptic potential occurs if the inhibitory effect is greater than the excitatory, causing hyperpolarization of the membrane. 57. C) neurotransmitter a. Autonomic pathways consist of two types of motor neurons. Show the details. The CNS contains about 100 billion neurons, on the periphery - about 25 million.<br><br>The neuron is covered by a membrane that forms a closed space . c. Astrocytes The period after an initial stimulus when a neuron is not sensitive to another stimulus is the ________. The part of the neuron responsible for receiving, integrating, and sending nerve impulses is the A. dendrite. B They have extreme longevity. Even though someone is diagnosed with MS, the axons are not damaged. Saltatory conduction is made possible by ________. stem c.) muscles d.) osteocytes. Different types of neurons include sensory, motor, and interneurons, as well as structurally-based neurons, which include unipolar, multipolar, bipolar, and pseudo-unipolar neurons. e. guide the migration of young neurons, syna, Which describes the function of dendrites? d. Neurotransmission from the neuron would increase. The cell body is the metabolic center of the neuron. c. Inhibited digestion Neurons are responsible for transmitting signals throughout the body, a process that allows us to move and exist in the world around us. a. Functional genomics a. reduced cerebrospinal fluid. Write a paragraph describing the Multiple sclerosis (MS) is a chronic inflammatory disease of the central nervous system (CNS) coined by inflammation and neurodegeneration. b. inhibit axon growth. Neurons are found across the body but are most numerous in the brain. d. cingulate cortex. Multiple Choice. a. Pons Characteristics Of Neurons. 55. B) If a motor neuron in the body were stimulated by an electrode placed about midpoint along the length of the axon ________. C) are crucial in the production of neurotransmitters I was doing so well."
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