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b. ANS stimulation of involuntary effectors is always excitatory. D) size of action potentials, Bipolar neurons are commonly ________. 1. - Neurons have a cell body, which contains the majority of the cell's organelles. A. Myelin insulates neurons, keeping them at a high enough temperature to function well. 25. C) Sodium gates in the membrane can open in response to electrical potential changes. a.) a. reduced cerebrospinal fluid. 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? Which of the following is NOT a function of astrocytes? 34. D) astrocytes, What does the central nervous system use to determine the strength of a stimulus? What functional class of neuron carries impulses away from the CNS to muscles or glands? All rights reserved. a. other neurons b. muscles c. glands d. all of the above, All of the following are characteristics of sympathetic preganglionic neurons EXCEPT: a. b. Neurons would be unable to form the blood-brain barrier. D. Involved in fast-acting body control. the afferent division of the nervous system. nerve impulses) Need constant supply of nutrients and oxygen O All of the listed answer choices . A) Sensory neuron B) Motor neuron C) Interneuron D) All of the above. b. astrocytes respond to injury. likely true? Question. 78. 53. Neurons may be classified according to several characteristics. c. they form an insulating material around axons. C ) brain and spinal cord. D) innervation of skeletal muscle, Collections of nerve cell bodies outside the central nervous system are called ________. 66. Which of the following is NOT characteristic of the sympathetic division of the autonomic nervous system? What structural classification describes this neuron? 1. A postsynaptic potential is a graded potential that is the result of a neurotransmitter released into the synapse between two neurons. C) ganglia D) They are mitotic. researcher would: b. autosomal chromosomes. Which of the following describes the nervous system integrative function? 12. d . b) Myelin prevents conduction of electricity from the axon hillock to the axon terminal. d. Sensory, Which neuron structure receives impulses from the preceding cell? 2. a. D) lowering the threshold for an action potential to occur. Answer: Option D is correct Explanation: Neurons generally do not e . They have long fibers from CNS to ganglion. Which of the following statements is incorrect? The person may have an increase in heart rate. a. medulla. innervation of skeletal muscle. Group C fibers are not capable of saltatory conduction. These K+ ions decrease the positive ion concentration momentarily below the normal -70mV and thus hyperpolarize the cell. Its cell body is in an autonomic ganglion outside the CNS. A thirestold potential must be excecded or reached. A toxin that destroyed the presynaptic terminal on an axon would likely: 7. D) nitric oxide, Which of the following describes the excitatory postsynaptic potential? What is the role of microglial cells and why are they so important in the CNS? depression would be an example of: a. Schwann cells b. oligodendrocytes c. astroc, What kind of nerve cells are thought to be helpers for the neurons? 74. Resting potentials are not just characteristics of nerve cells; all cells in the body have resting potentials. d. prefrontal cortex. B) innervation of cardiac muscle A) sodium B) anchor neurons to blood vessels described as having a word on the tip of your tongue, might have abnormal functioning in the: 48. What are the cells that transmit nerve impulses between parts of the nervous system? The midbrain contains the: Name the following: Nervous tissue cells that regulate the chemical environment of neurons. 33. Classify Neurons by their Function. Which of the following stimuli caused the reaction in the graph on the left? Some neuroglia remove debris and foreign material from the nervous system. 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. To which part of the spinal cord is sensory information sent? If a physician identified her patient as a low drug metabolizer, which of the following is most Which does NOT describe nervous tissue? d. Activation of postganglionic parasympathetic neurons, 65. When a gene is activated, a specific DNA segment is unraveled and transcribed onto: Give a valid explanation of why this could occur. a. efferent neuron b. afferent neuron c. association neuron d. glial cell, Which of the following is not characteristic of neurons? c. basal ganglia. B) called neuroglial cells A) peripheral and spinal nerves B) brain, spinal cord, and peripheral nerves C) brain and spinal cord D) spinal cord and spinal nerves. D) glial cell, Saltatory conduction is made possible by ________. b. Microglial cells The structure that meets the spinal cord in the hindbrain is the: Nerve cell adhesion molecules (N-CAMs) ________. 55. D) stimulate the production of acetylcholine, Which of the following is not a function of the autonomic nervous system? Which of the following statements regarding nervous tissue is not true? a. Alzheimer's disease. (c) They have an exceptionally high metabolic rate. 9. B) If a motor neuron in the body were stimulated by an electrode placed about midpoint along the length of the axon ________. The person would have impaired decision making while the drug's effects were active. Which of the following is an excitatory neurotransmitter secreted by motor neurons innervating skeletal muscle? The autonomic nervous has control centers in the: A. Sensory. 63. A substance that inhibits the activity of the cerebellum would be expected to: b. that a person is genetically female. B) negatively charged and contains less sodium d. gray matter. Which cell causes endothelial cells to fit closely together? a. parietal lobe. c. The output (. 100% (3 ratings) Which of the following is NOT a characteristic of neurons? Which type of microglial cells promote inflammation? C) action potential A) efferent neuron The concentration of __ is higher inside than outside the cell. D. axon hillock. 56. The person may have constricted pupils. Upper motor neurons are classified according to the pathways they travel in C. The Babinski response is not characteristic of paralysis from UMN lesions B) muscle contraction would occur. 10. hippocampus, which of the following would most likely be the result? A) astrocytes 13. A patient was admitted for depression. a. periaqueductal gray. a. Motor afferent neurons possess long dendrites and short axons. Select the correct statement regarding synapses. C) leakage channel True or False, The nodes of Ranvier are found only on myelinated, peripheral neuron processes. a. Oligodendrocytes D. Skeletal muscles supports the weight of some internal organs. Multiple sclerosis (MS) is a chronic inflammatory disease of the central nervous system (CNS) coined by inflammation and neurodegeneration. Cell bodies of sensory neurons may be located in ganglia lying outside the central nervous system. (a) dendrites (b) cell body (c) myelin (d) axon terminal. b. the medulla. d. pineal gland. 38. D) generator potential. analyzes sensory information, stores information, makes decisions. _____________ is the study of how genes support the function of neurons. Extrapyramidal side effects produced by antipsychotic drugs are similar to the symptoms of: b. cause aggressive behavior. 1 and Klioutchnikov et al. Which of the following is correct? c. Cerebellum B) amino acid d. hippocampus. C) Group B fibers are highly myelinated and have the highest conduction velocities. myelinated; move from one node of Ranvier to another. This protective role is important because cells of the immune system are denied access to the CNS. This may account for the cycles of relapse and remission in different patients. C) They have an exceptionally high metabolic rate. D) voltage regulated repolarization, Neuroglia that control the chemical environment around neurons by buffering potassium and recapturing neurotransmitters are ________. ANSWER : The neurons are included in the somatic body cells but are. Neurons that lie between sensory neurons and motor neurons are called ________. A postsynaptic potential is a graded potential that is the result of a neurotransmitter released into the synapse between two neurons. C) destroy ACh a brief period after its release by the axon endings a. interneuron. D) effector, What is the role of acetylcholinesterase? Describe annual cleanupthat isfrequently present in these agreements. lowers the probability of producing an action potential. The synaptic cleft prevents an impulse from being transmitted directly from one neuron to another. The nervous system most dominant while relaxing is the: c. Hippocampus Neurons are found across the body but are most numerous in the brain. Just from looking down a microscope, however, it becomes very clear that not all neurons are the same. a. Microglial cell activation What process does this interfere with and what would be the consequence? A) motor neurons Identify the neuron type described: Two functional neuron types that are structurally multipolar neurons. During depolarization, the inside of the neuron's membrane becomes less negative. A) They are short-lived. Motor. New three-photon miniature microscopes open the study of neuronal networks to those deep in the brains of behaving animals. Which of the following best describes the function of astrocytes? A) innervation of smooth muscle of the digestive tract Longevity 2. In terms of function, scientists classify neurons into three broad types: sensory . Which of the following are afferent neurons, relative to the central nervous system? a. the person had neurons that did not form correctly during neural development. D) positively charged and contains more sodium. A drug that caused someone to make a reckless decision might be affecting the: The following is a list of characteristics of neurons: - Neurons are cells that specialized in the transmission of electrical impulses. Neurons differ in their morphology and function. The Quadratic Formula from Kinematics In this problem we show how the kinematic equations of motion can be used to derive the quadratic formula. a. norepinephrine. I was doing so well." Which of the following would be most likely to increase heart rate? b. Pons b. basal ganglia synapses. A) the impulse would move to the axon terminal only. A) the impulse would move to the axon terminal only d. it fills spaces in the brain. The autonomic has two divisions: the sympathetic and parasympathetic. The cerebral cortex has features called gyri and sulci. What is a credit line? c. Motor efferent neurons possess long dendrites and short axons. A) Specific sodium gates will open. B) excitatory potential Answer: Option D is correct Explanation: Neurons generally do not e. A person suffering from an inability to speak the word she intends to say, sometimes High metabolic rate C. Require continuous supplies of glucose and oxygen D. Extreme longevity E. No exceptions; all of these are characteristic of neurons. Responding to brain injury is an important function of astrocytes. Specialized cells in the nervous system that control behavior, senses, and movement are called: a. neurons. The membrane potential of the postsynaptic membrane changes. the somatic nervous system. 23. Which of the followings cells accounts for roughly half of the volume of the nervous system? c. Astrocytes GABA and glycine are amino acid neurotransmitters; dopamine and norepinephrine are catecholamines; and endorphin and enkephalin are peptide transmitters. Which of the following is false or incorrect? Glial scars may impair recovery from brain injury because: They are like neurons except that they lack axons. That part of the nervous system that is voluntary and conducts impulses from the CNS to the skeletal muscles is the ________ nervous system. ATP neurotransmitters have what basic effect on the body? These neurons are inhibitory neurons, meaning they release neurotransmitters that keep other neurons from firing. a. Mitochondria in a neuron would no longer function. 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. b. Neurons have . A) ependymal cells conditions in Russian society that led to the Revolution of 1917. d. represent a general decline of autonomic nervous system activity. d. Neurons. This area is also known as the soma or perikaryon. A) ependymal cells What is the functional neuron type that is the most prevalent in the CNS? Be Which of the following is not found in the limbic system? d. the structure is anterior to the area. 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).