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29 Cards in this Set
- Front
- Back
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True or False: the spinal cord exhibits functional independence from the brain
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true
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The location of the cervical region of the spinal cord is the _____- most region of the spinal cord
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superior
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the spinal cord and spinal nerves are responsible for ____ which are our quickest reactions to a stimulus
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reflexes
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how many regions of the spinal cord are there?
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five
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what are the names of the five spinal cord regions?
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cervical, thoracic, lumbar, coccygeal, sacral
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Lengthwise, the spinal cord in an older adult is actually _____ thanthe vertebral canal that houses it
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shorter
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the tapering inferior end of the spinal cord is called the ____ and is the official end of the spinal cord proper
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"conus medullaris"
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inferior to this point are groups of axons called the _____. housed in this is the ____ which helps to anchor the conus medullaris to the coccyx.
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cauda equina, filum terminale
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There are the same number of spinal nerves as spinal vertebrae in each region with one exception. which region is the exception.
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the cervical region houses 8 spinal nerves instead of 7.
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what is the order of the layers of the spinal cord starting with the most superficial structure?
the vertebrae, epidural space, _____, subdural space, _______, subabrachniod space, pia mater |
dura mater, arachnoid
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what does the epidural space house?
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loose connective tissue, blood vessels, adipose connective tissue
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In which layer of the spinal cord is anesthetic given in a pregnant female to deaden her from the waist down?
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epidural space
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In which later is the cerebrospinal fluid housed?
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the subarachnoid space
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the spinal cord is partitioned into inner ____ matter, and outer _____ matter
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gray, white
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the white matter is composed of ______ axons which is resposnsible for the white color and provides means of ____ communication to and from the brain
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neural
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ascending tracts of white matter conduct impulses from the _____ to the _____
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sensory receptors, brain
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descending tracts of white matter conduct motor impulses from the ____ to the ______
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brain, muscles and glands
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the gray matter is composed primarily of what?
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dendrites and cell bodies of neurons and glial cells and unmyelinated axons
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The gray matter serves at the center for what?
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spinal reflexes
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there is a central canal in the center of the butterfly shaped _______ that is filled with cerebral spinal fluid.
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gray matter
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what is the butterfly shaped central canal of the gray matter continuous with?
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the medulla oblongata and the ventricles of the brain
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the 31 pairs of spinal nerves connect the central nervous system to what?
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the muscles, glands, and receptors
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True or False? Spinal nerves are made of one type of nerve?
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False...Spinal nerves are made of mixed nerves
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each spinal nerve exits the vertebral canal and travels through an intervertebral foramen above or below the vertebra of the same number
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....
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what is a nerve plexus? and do most of the thoracic and the nerves S5-Co1 form plexuses?
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a network of interworking spinal nerves, no
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When damage occurs to a single section of the spinal cord does complete loss of innervation to a particular muscle or region of skin occur?
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no
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what region of the body do branches of the cervical plexuses innervate?
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the neck muscles as well as the skin of the neck and portions of the head and shoulders
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what nerves are the phrenic branch of the cervical plexus formed from?
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the c4 and some contributing axons from c3 and c5.
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which spinal nerves the are brachial plexuses formed from?
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C5-T1.
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