e following statements concerning structures of the spinal cord is false? ple Choice The posterior horn of the cord contains the cell bodies of motor neurons. The ventral root of the spinal cord conveys motor (efferent) nerve impulses away from thes The ventral root is formed by the axons of neurons in the lateral and anterior horns. The dorsal and ventral roots unite to form spinal nerves. The dorsal root of the spinal cord conveys sensory (afferent) nerve impulses to the spinal cord.

e following statements concerning structures of the spinal cord is false? ple Choice The posterior horn of the cord contains the cell bodies of motor neurons. The ventral root of the spinal cord conveys motor (efferent) nerve impulses away from thes The ventral root is formed by the axons of neurons in the lateral and anterior horns. The dorsal and ventral roots unite to form spinal nerves. The dorsal root of the spinal cord conveys sensory (afferent) nerve impulses to the spinal cord.

Anatomy & Physiology

1st Edition

ISBN:9781938168130

Author:Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark Womble

Publisher:Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark Womble

Chapter13: Anatomy Of The Nervous System

Section: Chapter Questions

Problem 5ILQ: Watch this video (http://openstaxcollege.org/l/graymatter) to learn about the gray matter of the...

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The spinal cord contains tracts of inter neurons. Some tracts carry _ signals downward and other tracts carry _ signals upward. a. Cardiac, Motor b. Sensory, Autonomic c. Sensory, Motor d. Motor, Sensory
The spinal cord serves many important functions for the nervous system, which of the following is not one of them? Group of answer choices To protect neurons on route to their destinations To carry out a reflex, such as quickly moving your foot away as you step on a sharp object. To carry sensory signals up to the brain To carry motor signals from the brain to the skeletal muscles To coordinate all the muscle groups associated with locomotion
Watch this video (http://openstaxcollege.org/l/graymatter) to learn about the gray matter of the spinalcord that receives input from fibers of the dorsal (posterior)root and sends information out through the fibers of theventral (anterior) root. As discussed in this video, theseconnections represent the interactions of the CNS withperipheral structures for both sensory and motor functions.The cervical and lumbar spinal cords have enlargements asa result of larger populations of neurons. What are theseenlargements responsible for?
Which of the following is false regarding nerve plexuses? A) Nerve plexuses occur in the cervical, brachial, lumbar and sacral regions. B) Nerve plexuses involve only the dorsal rami. C) Nerve plexuses are interlacing nerve networks, so that each branch of a plexus contains fibers from several spinal nerves. D) Because of nerve plexuses, each muscle in a limb receives its nerve supply from more than one spinal nerve. E) Because of nerve plexuses, damage to a single spinal segment or root cannot completely paralyze any limb muscle. In a spinal reflex, integration occurs in the cerebral cortex in the brain stem in the thalamus in the spinal cord in the cerebellum True or false. The amplitude of a sound wave determines the pitch of a sound, while the sound intensity is determined by the wavelength of a sound wave
Looking at the pictures shown of the longitudinal aspect of the spinal cord, identify and label: • Spinal cord • Cervical spinal nerves (how many?) • Thoracic spinal nerves (how many?) • Lumbar spinal nerves (how many?) • Sacral spinal nerves (how many?) • Cervical enlargement • Lumbar enlargement • Conus medullaris • Cauda equine • Filum terminale
True or false: the spinal cord (in adults) ends around L1 or L2 vertebrae. True or false: spinal nerves leave the spinal column between two adjacent vertebrae. True or false: there are 31 total spinal nerves. True or false: cerebrospinal fluid flows through the central canal of the spinal cord.
Selective destruction of a motoneurons in the spinal cord will have which of the following effects on the affected muscles?A) Flaccid paralysisB) HypertrophyC) Lead-pipe rigidityD) RigidityE) Spastic paralysis
The central terminals of afferent neurons mediating spinal reflexes are distributed within the spinal cord, so that :-a- all of them terminate in the same spinal segment of their entry to the cordb- all of them terminate on interneuronsc- all of them subserve spinal reflexesd- they provide pathways for divergence of the incoming sensory impulses
In adults, the spinal cord is not the same length as the vertebral canal, and most of the lumbar part of the spinal cord is within A. the coccyx. B. the sacrum. C. the cervical vertebrae. D. the thoracic vertebrae. E. the cauda equina.
Fill in the blanks. The spinal cord extends from the __________________________, of the occipital bone to the _________________________ vertebra. It terminates as the _______________________ and gives off a bundle of nerve roots called the _________________________.
This yellow dotted outline in this image shows the location of a lesion of the sensory afferents in the dorsal columns in spinal cord. State two different signs or symptoms that the person would present with. State whether they are ipsilateral or contralateral.
Which of the following is NOT true in adults? (A) The tapering end of the spinal cord may terminate as high as T12 or as low as L3. (B) The first cervical nerves lack dorsal roots in 50% of people. (C) The coccygeal nerve may be absent. (D) The terminal filum is the vestigial rem- nant of the caudal part of the spinal cord that was in the tail of the embryo. (E) The spinal cord has a lumbar enlargement for the lower limb but no equivalent enlargement for the smaller upper limb.