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Related Concept Videos

Cranial and Spinal Meninges01:19

Cranial and Spinal Meninges

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The cranial and spinal meninges are complex protective structures surrounding the central nervous system (CNS), consisting of the brain and spinal cord. These meninges consist of the dura mater, the arachnoid mater, and the pia mater. They protect the CNS, provide structural support, and aid in circulating cerebrospinal fluid (CSF).
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The spinal cord resides within the protective confines of the vertebral column. It is the main pathway for information traveling between the brain and the body. It plays a fundamental role in nearly all bodily functions, from simple reflexes to complex motor movements. The spinal cord begins at the medulla oblongata at the base of the brainstem and extends downward, terminating at the conus medullaris near the first and second lumbar vertebrae. The spinal cord's length in adults is...
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Spinal Cord: Cross-sectional Anatomy01:16

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The cross-sectional anatomy of the spinal cord offers a detailed view of its complex structure and function within the central nervous system. At the core of the spinal cord lies the gray matter, characterized by its butterfly or "H"-shaped appearance in cross-section. This central region is enveloped by white matter, with the overall structure divided into symmetrical halves by the dorsal median sulcus and the ventral median fissure.
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The spinal cord is the body’s major nerve tract of the central nervous system, communicating afferent sensory information from the periphery to the brain and efferent motor information from the brain to the body. The human spinal cord extends from the hole at the base of the skull, or foramen magnum, to the level of the first or second lumbar vertebra.
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Cerebrospinal Fluid01:21

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Cerebrospinal fluid (CSF) is a colorless liquid that flows around the brain and the spinal cord, playing a vital role in the protection, support, and overall function of the central nervous system (CNS). CSF production, circulation, and absorption are tightly regulated processes essential for the brain and spinal cord to function properly.
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Spinal anesthetics are given during lower abdomen and limb surgeries to block sensory and motor neurons. They are administered in the mid to low lumbar regions, primarily acting on the cauda equina's nerve roots. The blockade level depends on the local anesthetic (LA) concentration. Usually, low LA concentrations are sufficient to block sensory fibers, while only high LA concentrations block motor fibers. Other factors like injection volume and speed, the patient's posture, and the drug...
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Related Experiment Video

Updated: Jun 16, 2025

Laminectomy and Spinal Cord Window Implantation in the Mouse
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Spinal Arachnoid Web.

Maiya Smith1, Morgan Ketterling1, Alexander Gallaer1

  • 1University of Utah, Department of Emergency Medicine, Salt Lake City, Utah.

Clinical Practice and Cases in Emergency Medicine
|August 19, 2024
PubMed
Summary
This summary is machine-generated.

A rare spinal arachnoid web caused upper back pain and numbness in a 57-year-old male. Early diagnosis and surgical treatment are crucial for symptom resolution and preventing further neurological damage.

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Area of Science:

  • Neurology
  • Neurosurgery
  • Radiology

Background:

  • Spinal arachnoid webs are rare congenital or acquired malformations.
  • They can cause significant neurological deficits due to spinal cord compression.

Purpose of the Study:

  • To report a case of spinal arachnoid web presenting with back pain and numbness.
  • To emphasize the importance of early diagnosis and intervention for spinal arachnoid webs.

Main Methods:

  • Case presentation of a 57-year-old male with relevant medical history.
  • Detailed neurological examination findings, including sensory loss in specific dermatomes.
  • Diagnostic imaging (e.g., MRI) to confirm the spinal arachnoid web.

Main Results:

  • The patient presented with a two-week history of upper back pain and numbness.
  • Physical examination revealed sensory deficits in the T3 and T4 dermatomes.
  • Imaging confirmed the presence of a spinal arachnoid web.

Conclusions:

  • Spinal arachnoid web is a rare but treatable cause of neurological symptoms.
  • Prompt diagnosis through clinical evaluation and imaging is essential.
  • Surgical intervention can lead to symptom resolution and prevent long-term disability.