Spinal Cord and Meninges
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| The area of cell bodies within the CNS | Gray Matter
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| The area of axons or fibers within the CNS | White Matter
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| What part of the spinal cord arises from the dorsal surface of the spinal cord | Dorsal Root
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| The dorsal root ONLY contains ______ neurons | Sensory
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| the Enlarged portion of the dorsal root is called the ? | Dorsal Root Ganglion
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| an area of cell bodies OUTSIDE of the CNS is called ? | Ganglion
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| The dorsal root ganglion contains what ? | Cell bodies of Sensory(afferent) neurons
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| What structure arises from the ventral surface of the spinal cord | The Ventral root
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| What kind of neurons does the ventral root contain ONLY ? | Motor neurons only
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| The ventral root joins the dorsal root joint to form the ? | Spinal nerve
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| The spinal nerve divides in to a LARGER _______ Ramus , and SMALLER_____ Ramus | Ventral, Dorsal
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| Which ramus supplies the entire anterior trunk as well as the appendages ? | The Ventral Ramus
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| Which rams supplies wall the structures of the back ? | The Dorsal Ramus
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| The interneuron cell body is in the ? | gray matter
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| The interneuron (internuncial) receives impulses from _____ neurons and synapses them to a ______ neuron. | Sensory, motor
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| The interneuron also crosses over to the other side of the spinal cord leaving the gray matter and enters the ____ matter and begins to _____ through the spinal cord. | White, Ascend
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| the ______ neuron has its cell bodies in the gray mattar of the spinal cord , and its axon passing though the white matter into the ______ root. | Motor(efferent), Ventral
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| How many pairs of cervical nerves are there in the spinal cord ? | 8 Pairs
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| How many pairs of thoracic nerves are there in the spinal cord ? | 12 pairs
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| How many pairs of Sacral nerves are there in the spinal cord ? | 5 Pairs
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| How many pairs of Coccygeal nerves are there in the spinal cord ? | 1 pair
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| The spinal cord is a long _______ mass of nervous tissue that occupies the upper ____ of the vertebral canal | Cylindrical , 2/3
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| The spinal cord connects to the brain superiorly where it is continuous with the ________, and it extends inferiorly down to the the _____. | medulla, Lumbar vertebrae 2
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| the spinal cord has enlargements in what regions ? | cervical and lumbosacral
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| where are cell bodies of the neurons for the upper limb located ? | enlargement of the cervical region
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| where are cell bodies of the neurons for the lower limb located ? | enlargement of the lumbosacral region
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| Location of CONUS MEDULLARIS | at LV2
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| location of Cauda Equina | below LV2
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| The _____ _____ consists of very long roots of the lower spinal nerves, which descend in a bundle from the _____ _____ | Cauda equina , Conus Medullaris
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| The brain and the spinal cord are ______ and ______ by 3 layers of CONNECTIVE tissue, called _______ | Surrounded, Protected, Meninges
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| the 3 layers of the meninges , from external to internal are ? | Dura Mater, Arachnoid mater, and Pia mater
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| The dura mater is composed of ? | Dense fibrous connective tissue
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| The DURA MATER surrounds the _____ and extends through the ______, and courses inferiorly to the ______ in the vertebral canal. | Brain, Foramen Magnum, Coccyx
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| The space external to the Dura Mater is termed ? | Epidural Space
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| The epidural space contains ______ tissue in the form of globules of ____. The epidural space also contains_____ | Adipose, Fat , Veins
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| The Intermediate (middle) meninx is the ? | Arachnoid Mater
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| The arachnoid maters structure is a ? | delicate, loose, netlike membrane
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| The ARACHNOID MATER surrounds the _____, and extends through the ______, and courses inferiorly to the ______ in the vertebral canal. | Brain, Foramen Magnum, Coccyx
(same as dura)
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| The Arachnoid mater is separated from the pia mater by the ? | Subarachnoid Space
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| The Subarachnoid space contains the ? | CSF
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| The Pia mater is the _______ layer of the 3 meninges | Innermost
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| the Pia mater's structure ? | VERY delicate connective tissue
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| The PIA MATER lies _____ to the surface of the _____ & _____ _____ | directly , Brain, Spinal cord
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| The PIA surrounds the _____, and extends through the ______, and courses inferiorly to the ______ in the vertebral canal. | Brain, Foramen Magnum, Coccyx
( they all do)
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| How many pairs of Lumbar nerves are there in the spinal cord ? | 5 Pairs
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