Notes in IE 5 Physio Phar 111 Lec 2

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Published	10/29/2023	how many cranial nerves are there
Published	10/29/2023	how many spinal nerves are there total
Published	10/29/2023	Anatomy of spinal cord- Spinal cord begings descending from {{c1::brain stem}} - Exits the skull at the {{c2::Forum Magnum}} - Men = 18”; Women = 17” …
Published	10/29/2023	Rootlets – {{c1::groups of nerve fibers exit the spinal cord and entering the spinal cord}} - Merge together to form {{c1::spinal nerves}} - moto…
Published	10/29/2023	Conus medullaris – {{c1::end of the spinal cord itself}} - Cone shaped ending - Ends in {{c1::lumbar}} region of lower back (L2) Cauda equina – {{c2::…
Published	10/29/2023	Spinal nerve groups - {{c1::8 Cervical nerves (C1 - C8)}} – {{c6::exit from the neck}} - {{c2::12 Thoracic nerves (T1 - T12)}} -- {{c5::exit from thor…
Published	10/29/2023	Spinal cord- cell bodies (gray matter) located in the {{c1::middle}}- fibers (white matter) {{c1::surround the cell bodies}}- {{c2::Gray commissure}} …
Published	10/29/2023	posterior median sulcus and anterior median fissure- role -- {{c2::demarcates cord into left and right}} Central canal – continuous through cord - rol…
Published	10/29/2023	Spinal nerves – {{c1::ventral roots and dorsal root ganglions merging }}- Rootlets merge to become {{c1::ventral roots }}- Dorsal roots merg…
Published	10/29/2023	Ascending somato-sensory tracts 1. {{c1::Nociceptors send information to primary sensory neuron}} 2. {{c2::Axon of the neuron synapses with secondary …
Published	10/29/2023	Ascending spinothalamic tract neuron – the secondary sensory neuron - {{c2::The secondary sensory neuron picks up info from the right side}}- {{c…
Published	10/29/2023	Descending corticospinal tract 1. {{c1::Cell bodies in precentral gyrus (motor cortex) sends axons down through brain}} 2. {{c2::info crosses in brain…
Published	10/29/2023	myotome
Published	10/29/2023	{{c5::Posterior funiculus (Dorsal columns)}} – {{c1::sensations of pressure, fine touch, vibration, proprioception from skin and joints }}{{c4::Antero…
Published	10/29/2023	Herniated disk – {{c1::when the intervertebral disk collapse}}
Published	10/29/2023	Whiplash – {{c1::hyperextension and hyperflexion of the neck}} → {{c2::squeeze/ crush spinal nerves}} → {{c3::cervical nerve inflammation}} → pain and…
Published	10/29/2023	Shingles – chicken pox virus - virus resides in the {{c1::dorsal root ganglion cells}} for the rest of your life and may {{c2::reactivate and act…
Published	10/29/2023	Post-herpetic neuralgia – most common complication of shingles - Virus permanently damages sensory fiber → {{c1::constant burning pain in nerves and s…
Published	10/29/2023	Lower back pain caused by compression and pressure - symptoms - {{c1::numbness and tingling}}- Spinal nerves {{c1::innervating lower back}} causes pai…
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