Preganglionic neurons are short and synapse in ganglia located near the spinal cord. Which of the following IS NOT a description of a neuron? Both excitatory and inhibitory potentials impinge on neurons. d. temporal lobe. Which of the following is the mechanism by which these viruses travel from the ganglia (located within the head . 77. a. on dendrites. It is concluded that motor and sensory axons have a different substrate preference at early postnatal stages but this difference is lost in the adult. Specifically, combination therapy (simultaneous use of customized sub-perception field and paresthesia-based SCS) versus monotherapy (paresthesia-based SCS) was evaluated. c. reticular formation. c. Proteoglycans _____________ is the study of how genes support the function of neurons. b. thalamus. In addition to diffusion, what are two other mechanisms that terminate neurotransmitter activity? The concentration of __ is higher outside than inside the cell. When information is delivered within the CNS simultaneously by different parts of the neural pathway, the process is called ________ processing. c. Epigenetics Which of the following is not true about the cerebral cortex? The axon hillock is located: A) mechanically gated channel Sensory Neurons Motor Neurons Inter-Neurons Potentials that are short-lived, local changes in membrane potential that can be either depolarized or hyperpolarized are called ________ potentials. What is a substance released from neurons that influences the sensitivity of neurons to neurotransmitters called? Which of the following is not characteristic of neurons? D) glial cell, Saltatory conduction is made possible by ________. The frequency of impulse transmission indicates the stimulus intensity and the brain responds appropriately. 1.Introduction. The importance of a stimulus is derived from the number of stimuli received from the same source. Which of the followings cells accounts for roughly half of the volume of the nervous system? When information is delivered within the CNS simultaneously by different parts of the neural pathway, the process is called ________ processing. 9. Neurotransmitters are chemical signals used as a means of communication. Answer: Option D is correct Explanation: Neurons generally do not e . Neurons are relatively small, simple-structured cells. A) support and brace neurons a. Doral root An impulse from one nerve cell is communicated to another nerve cell via the ________. b. Ventral root destroy ACh a brief period after its release by the axon endings. D) innervation of skeletal muscle, Collections of nerve cell bodies outside the central nervous system are called ________. response? B) The release of neurotransmitter molecules gives cells the property of being electrically coupled. c. reduced oxygen delivery to cells. B) repolarization A) ependymal cells d. acetylcholine. b. the person has a disease that affects myelin around axons. B) negatively charged and contains less sodium Cell body c. Ganglion d. Axon, Which of the following is an excitatory neurotransmitter secreted by motor neurons innervating skeletal muscle? Neurons may be classified according to several characteristics. a. ribosomes. b. increased heart rate. c. occipital lobe. d. cause a tremor. Name the parts that comprise the elbow joint. 2 introduce new . Which of the following is an EXCITATORY neurotransmitter secreted by motor neurons innervating skeletal. True or False, A postsynaptic potential is a graded potential that is the result of a neurotransmitter released into the synapse between two neurons. 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. Specialized cells in the nervous system that control behavior, senses, and movement are. B) short distance depolarization The synapse more common in embryonic nervous tissue than in adults is the ________. A second nerve impulse cannot be generated until ________. The autonomic nervous has control centers in the: 22. c. It is avascular. Reflexes are rapid, automatic responses to stimuli. a. Somatic Nervous System Neurons may be classified according to several characteristics. 79. b. Neurotrophins Show the details. A. astrocytes B. ependymal cells C. microglia D. Schwann cells, Which of the following options is correct? acetylcholine Cells may have long extensions. Characteristics and function of neurons. b. Microglial cells a. visual information. A drug that inhibited the reticular activating system would most likely cause: a. described as having a word on the tip of your tongue, might have abnormal functioning in the: Ans: they are mitotic Unli . Treatment of pain with local anesthetics leads to an unfavorable decrease in general sensory acuity due to their indiscriminate block of both pain sensing . Which of the following describes the nervous system integrative function? To find the time when this object reaches the position x=0x=0x=0 we can use the quadratic formula, or apply the following two-step procedure: (a) Use Equation v2=v02+2a(xx0)=v02+2axv^2=v_0^2+2 a\left(x-x_0\right)=v_0^2+2 a \Delta xv2=v02+2a(xx0)=v02+2ax to show that the velocity of the object when it reaches x=0x=0x=0 is given by v=v022ax0v=\pm \sqrt{v_0^2-2 a x_0}v=v022ax0. Experts are tested by Chegg as specialists in their subject area. c. M2 microglial cells Neurons require continuous and abundant supplies of oxygen, and cannot survive for more than a few minutes without it. B) Group A fibers are mostly somatic sensory and motor and are the smallest in diameter. Their basic function is to receive and transmit information through electrical impulses. D) lowering the threshold for an action potential to occur. o Neurons have a very long lifespan Have low mitotic activity fie cannot undergo cell division) O Ability to transmit electrical signals (i.e. B) A nerve impulse occurs if the excitatory and inhibitory effects are equal. a. Neurons generate and conduct electrical impulses called action potentials. a. norepinephrine. D) Schwann cells, Schwann cells are functionally similar to ________. The part of a neuron that sends neurotransmitters into a synapse is called a(n): 6. 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 A) support and brace neurons myelinated; move from one node of Ranvier to another. a. Epigenetic markers What does myelin do for neurons? Which of the following is NOT characteristic of the sympathetic division of the autonomic nervous system? A) efferent neuron Both responses are examples of graded potentials. The STN also forms a reciprocally connected network with the GABAergic external globus pallidus that converges onto common basal ganglia output neurons. Tell why you think so. c. cause the release of neurotrophins. C) Sodium gates will open first, then close as potassium gates open. c. Astrocytes B) cholinesterase d. increased protection of the brain. The point where a motor neuron meets a muscle fiber is called the: Functions. D) absolute refractory period. What is the role of calcium in synaptic activity? b. sulci. A researcher found that a drug increased heart rate. Which of the following statements is incorrect? taking the substance. True or False, 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. c. myelin around axons. c. Motor efferent neurons possess long dendrites and short axons. Hepatocytes and neurons express low baseline CB1R and CB2R, respectively, and their cell-type-specific functions are not well defined. D) They can be called postsynaptic potentials. Neurotransmitter is released from presynaptic neurons through what mechanism? d. Autonomic Nervous System, 21. c. enhance the activity of reactive astrocytes. Motorneurons release acetylcholine at: Which of the following conducts impulses to an effector? Its cell body is in an autonomic ganglion outside the CNS. 44. Which of the following is NOT characteristic of the sympathetic division of the autonomic nervous system? 18. Which of the following will occur when an excitatory postsynaptic potential (EPSP) is being generated on the dendritic membrane? Which of the following mechanisms is most significant in returning Na+ and K+ concentrations to resting ionic conditions (from point D to point E)? (a) Fluorescent lightbulbs contain a small amount of mercury, giving a mercury vapor pressure of around 1*10^(-5) atm. The neuronal membrane. Which nervous sytem is responsible for delivering voluntary motor signals from the CNS to ________ potentials are short-lived, local changes in membrane potential that can be either depolarized or hyperpolarized. d. The cerebral cortex is found on the surface of the brain. 39. The person would have impaired decision making while the drug's effects were active. Which division of your nervous system is generating this response? Different types of neurons include sensory, motor, and interneurons, as well as structurally-based neurons, which include unipolar, multipolar, bipolar, and pseudo-unipolar neurons. (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. Site of mRNA translation for proteins of the axolemma c. Axon fibres are covered by a white sheath called myelin. a. Sensory neurons. A) An excitatory postsynaptic potential occurs if the excitatory effect is greater than the inhibitory effect but less than threshold. View the full answer. 30. Select the correct statement regarding synapses. Which nerve cells carry impulses from the brain to the muscles? Diminished release of acetylcholine from preganglionic sympathetic neurons would: D) positively charged and contains more sodium. The patient has a polymorphism that slow metabolism of a drug. Indicate the number of orbitals in the 6p sublevel. Which of the following is not a function of the autonomic nervous system? Resting potentials are not just characteristics of nerve cells; all cells in the body have resting potentials. C) oligodendrocytes c. a Mendelian disease. b. forebrain. 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 . Question. 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? 28. Which does NOT describe nervous tissue? How can potentially poisonous gases like NO and CO be used by the body? a. pituitary gland. 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 ________. d. improve recovery from traumatic brain injury. d. the person has a history of drug abuse. D) found in the retina of the eye, Which of the following is an excitatory neurotransmitter secreted by motor neurons innervating skeletal muscle? C) leakage channel

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