Spinal Cord Anatomy
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46 questions
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- Q1Which surface feature of the spinal cord is the location where ventral roots exit?Anterior median fissureAnterolateral sulcusAnterolateral fissurePosterolateral sulcus30s
- Q2The spinal nerve exiting between vertebrae T2 and T3 is namedT2T1T3T430s
- Q3Which of the following nerve fibers are from mechanoreceptors and nociceptors of body organs and have cell bodies found within the dorsal root ganglia?GVEGSAGVAGSE30s
- Q4Which of the following is NOT true of the meninges covering the spinal cord?The epidural space contains fat, loose connective tissue and an internal venous plexusThe pia mater invests the surface of the spinal cord, following its contoursThe dura mater is attached to the bone of the vertebral canal via the periosteal layerThe arachnoid mater is an avascular membrane that forms a barrier preventing fluid and substances from crossing the membrane30s
- Q5A continuation of the pia mater that pierces through the thecal sac and extends caudally to the coccyx enclosed in dura is theConus medullarisDenticulate ligamentFilum terminale internumFilum terminale externum30s
- Q6The dorsal horn of the spinal gray matter is composed ofLaminae I-VILamina VIILamina XLaminae VIII-IX30s
- Q7The nuclear group associated with laminae III and IV that receives non-noxious input via myelinated, large diameter afferents isSubstantia gelatinosaNucleus propriusPosteromarginal nucleusNucleus dorsalis30s
- Q8This nuclear group is the site of first order sensory processing and receives input from nociceptive afferents and collaterals from large diameter afferentsPosteromarginal nucleusSubstantia gelatinosaNucleus propriusNucleus dorsalis30s
- Q9Which area of the intermediate zone is found in spinal segments T1-L2 in the small lateral horn and contains neurons that give rise to preganglionic sympathetic efferent fibers?Phrenic nucleusInteromediolateral cell columnClarke’s columnSacral autonomic nuclei30s
- Q10In the ventral horn, the neurons that innervate extensor musculature are locatedMediallyVentrallyLaterallyDorsally30s
- Q11Where is the caudal end of the spinal cord located in a newborn?L2L3L130s
- Q12What are the two enlargements called in the spinal cord?Cervical and LumbosacralCervical and ThoracicCranial and Lumbosacral30s
- Q13Ventral roots leave from which surface feature of the spinal cord?Anterior Median FissurePosterior Median FissureAnterolateral sulcus30s
- Q14The Dorsal root entry zone is found at which surface feature of the spinal cord?Posterior intermediate sulcusPosterior Median SulcusPosterolateral sulcus30s
- Q15What spinal nerve goes in between C3 and C4?C4C5C330s