Which of the following is not a function of the autonomic nervous system? d. a transcription factor. to axon segment Axon segment C) microglia Which of the following IS NOT a description of a neuron? Many drugs that produce highly enjoyable effects likely do so by affecting the: 15. a. Oligodendrocytes specific or different from others in some way that they do not have. C. Afferent. The greater the density of spines along dendrites, the greater a neuron's: 5. a) control how neurons communicate at the synapse b) guide the development and differentiation of neurons and glial cells c) physically support neurons in the PNS to form nerves d) provide. Which of the following is NOT characteristic of smooth muscle? b. expect to find increased blood flow. 35. Which of the following lists the components found in a synapse? b. prevent electrical impulses from traveling down axons. Which of the following is false or incorrect? Myelinated neurons conduct impulses faster than unmyelinated neurons because? A. astrocytes B. ependymal cells C. microglia D. Schwann cells, Which of the following options is correct? inability to divide by mitosis long cell life span (longevity) high aerobic metabolic rate ability to survive in anaerobic (Uithout oxygen) conditions. The interior is ________. order to draw a diagram in her notebook. D) absolute refractory period. a. the person had neurons that did not form correctly during neural development. The midbrain contains the: Name the two other neuron types which are cholinergic. 45. B. Skeletal muscles store nutrient reserves. 30. d. Sensory efferent neurons po. which ofthe following is correct? sure to include the influence of German philosopher Karl Marx in 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. The plasma membrane of the neuron is semipermeable, being highly permeable to K + and slightly permeable to Cl and Na +.In the extracellular fluid, electroneutrality is preserved by a balance between a high concentration of Na + on the one hand and a high concentration of Cl , as . 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. A. neuronal fibers; axons B. axons; dendrites C. dendr. B) They can form on receptor endings. Resting potentials are not just characteristics of nerve cells; all cells in the body have resting potentials. a. interneuron. a. Mitochondria in a neuron would no longer function. Which of the following is not a function of the autonomic nervous system? muscles throughout the body? The substance released at axon terminals to propagate a nervous impulse is called a(n) ________. B) cholinesterase In epilepsy research, there is a growing interest in the role of the piriform cortex (PC) in the development and maintenance of limbic kindling and other types of limbic . C) An inhibitory postsynaptic potential occurs if the inhibitory effect is greater than the excitatory, causing hyperpolarization of the membrane. Which of the following are true about neurons? c. working memory. 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? B. Myelin prevents the conduction of electricity from the axon hillock to the axon terminal. This may account for the cycles of relapse and remission in different patients. 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) release nerve growth factor E) provide the defense for the CNS, Which of the choices below describes the ANS? a. polymorphisms. a. Alzheimer's disease. They have long fibers from CNS to ganglion. C) They increase amplitude as they move away from the stimulus point. a. tegmentum. The small layer of tissue surrounding the cerebral aqueduct in the brain is called: b. 1. B) large nerve fibers a. Somatic Nervous System 1. d) There, In order for skeletal muscle cells to contract, they must be excited by motor neurons. a. Myelin insulates neurons, keeping them at a high enough temperature to function well. b. Interneurons. True or False, If bacteria invaded the CNS tissue, microglia would migrate to the area to engulf and destroy them. B) repolarization 43. The synaptic cleft prevents an impulse from being transmitted directly from one neuron to another. Which of the following is not found in the limbic system? C) destroy ACh a brief period after its release by the axon endings Specifically, combination therapy (simultaneous use of customized sub-perception field and paresthesia-based SCS) versus monotherapy (paresthesia-based SCS) was evaluated. In your opinion, is "A Christmas Memory" merely a vivid portrayal of a memory, or does it also convey a theme, or message? the sympathetic division of the autonomic nervous system. Why does injection of a local anesthetic into a finger still cause a loss of the sensation of touch from the finger? b) The preganglionic neuron (sometimes called the ganglionic neuron), is the second motor neuron. b. reduce the activity of postganglionic sympathetic neurons. the sympathetic division of the autonomic nervous system. What parts of a neuron are completely contained within a ganglion? a. Axons b. Neurons c. Neuroglia d. Synapses e. Type A fibers, Which of the following parts of a neuron contain excitable membranes? An impulse from one nerve cell is communicated to another nerve cell via the ________. d . It stores energy reserves. 57. 3. 40. A) An inhibitory postsynaptic potential occurs if the inhibitory effect is greater than the excitatory, causing hyperpolarization of the membrane. Indicate the number of orbitals in the 6p sublevel. C) guide the migration of young neurons, synapse formation, and helping to determine capillary permeability 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. The all-or-none phenomenon as applied to nerve conduction states that the whole nerve cell must be stimulated for conduction to take place. a. Epigenetic markers Identify the neuron type described: Two neuron types whose cell bodies are in the spinal cord (CNS). b. increasing glial scarring. 14. Has component cells designed for conductivity b. 34. An inhibitory intracellular matrix releases neurotrophins to impair axon re-growth. 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 ________. b. Medulla C) ganglia 8. Which of the following is not a characteristic of neurons? a. reference memory. Treatment of pain with local anesthetics leads to an unfavorable decrease in general sensory acuity due to their indiscriminate block of both pain sensing . C) oligodendrocytes Different types of neurons include sensory, motor, and interneurons, as well as structurally-based neurons, which include unipolar, multipolar, bipolar, and pseudo-unipolar neurons. B) brain, spinal cord, and peripheral nerves 33. B) afferent neuron Motorneurons release acetylcholine at: D. axon hillock. copyright 2003-2023 Homework.Study.com. It impacts your spinal cord and the nerves that transmit and receive messages between your brain and the rest of your body. B) the Na ions have been pumped back into the cell B) innervation of cardiac muscle b. that a person is genetically female. a. Activation of preganglionic sympathetic neurons a. reduced cerebrospinal fluid. 11. C) anchor neurons to blood vessels a. it provides a protective cushion for the brain. 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. d. The patient is at risk of a Mendelian disease. Which of the following membrane regions would have significant numbers of voltage-gated ion channels? Some axon terminals contain more than one kind of neurotransmitter. response? This protective role is important because cells of the immune system are denied access to the CNS. B) A nerve impulse occurs if the excitatory and inhibitory effects are equal. Write a paragraph describing the c. cause the release of neurotrophins. What are the different types of neurons in the ANS and where are they located? B. d. tremor. (a) microglia (b) oligodendrocytes (c) ependymal cells (d) astrocytes. If the electrode is removed, a potential of zero is recorded again. b. the blood-brain barrier c. pons. (d) All of these are characteristic of neurons. b. dorsal horn The cerebellum is located in the: 67. To which part of the spinal cord is sensory information sent? In terms of function, scientists classify neurons into three broad types: sensory . b. Glossopharyngeal nerve spindle fibres to divide the cell. The patient is noncompliant and needs additional monitoring. Neurons and muscle cells are considered excitable tissues because they do what? Classify Neurons by 3 Structures. 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? 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. c. reticular formation. Which type of neurons are used to convey the special senses of sight? If a motor neuron in the body were stimulated by an electrode placed about midpoint along the length of the axon ________. What are the advantages and disadvantages of Europe's communications systems? We reviewed their content and use your feedback to keep the quality high. A) nuclei B) They have extreme longevity. Neuronal processes that normally conduct impulses toward neuron cell bodies are called and those that carry impulses away from neuron cell bodies are called. However, the electrical impulse cannot pass directly from a nerve cell to the skeletal muscle cells to excite them. What is the functional neuron type that is the most prevalent in the CNS? B) amplify or enhance the effect of ACh GABA and glycine are amino acid neurotransmitters; dopamine and norepinephrine are catecholamines; and endorphin and enkephalin are peptide transmitters. innervation of glands. Neuroglia found in the CNS that bind axons and blood vessels to each other are called ________. 11. Fill in the blank. Which of the following is not characteristic of neurons?