Conus Medullaris
Conus Medullaris - Related Videos
03:26
Detrusor Underactivity Model in Rats by Conus Medullaris Transection
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Cited by 2 •
2020
We present a method for establishing a detrusor underactivity model by conus medullaris transection in rats. Detrusor underactivity was successfully stimulated in these animals. The model can be used for studying urinary tract function.
06:11
Culturing Primary Rat Inner Medullary Collecting Duct Cells
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Cited by 20 •
2013
Arginine-vasopressin (AVP) controls fine-tuning of body water homeostasis through facilitating water reabsorption by renal principal cells. Here, we present a protocol for the cultivation of primary rat inner medullary collecting duct cells suitable for the elucidation of molecular mechanisms underlying AVP-mediated water reabsorption.
06:47
3D Organotypic Co-culture Model Supporting Medullary Thymic Epithelial Cell Proliferation, Differentiation and Promiscuous Gene Expression
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Cited by 15 •
2015
Studying medullary thymic epithelial cells in vitro has been largely unsuccessful, as current 2D culture systems do not mimic the in vivo scenario. The 3D culture system described herein - a modified skin organotypic culture model - has proven superior in recapitulating mTEC proliferation, differentiation and maintenance of promiscuous gene expression.
09:51
Intraosseous Needle Placement
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2023
Source: Julianna Jung, MD, FACEP, Associate Professor of Emergency Medicine, The Johns Hopkins University School of Medicine, Maryland, USA For unstable patients requiring urgent administration of medications, fluids, or blood products, establishing vascular access quickly is essential. However, there are many factors that can complicate placement of a peripheral intravenous cannula (PIV), and it is extremely common for PIV attempts to fail. PIV placement may be technically challenging in small...
04:32
Half-segmental Diaphyseal Bone Defect Model in Rats for Evaluating Bone Substitute Performance in Load-bearing Regions
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2025
This study established a rat femoral half-segmental defect model to evaluate the mechanical and osteogenic performance of bone substitute materials under load-bearing conditions without the use of internal or external fixation.
FAQs
The distinction explains why neural structures serving different body regions occupy different anatomical pathways. Lower sacral and coccygeal spinal cord segments remain within the terminal cord, whereas their descending nerve roots travel farther through the vertebral canal to reach appropriate exit points. This arrangement clarifies how central neural tissue connects with pelvic organs, lower limbs, and the perineum.
Its lower spinal cord segments provide the central neural component associated with pelvic organs, the perineum, and parts of the lower limbs. Signals can then continue through descending nerve roots within the vertebral canal before reaching their exit points. Understanding this relationship links the position of neural tissue to the body regions it serves.
The terminal region demonstrates a change from compact spinal cord tissue to a pathway dominated by descending nerve roots. That relationship illustrates how the central nervous system maintains connections with structures located farther down the vertebral canal. It also provides a useful anatomical framework for relating spinal organization to function in the lower body.
The region provides a recognizable anatomical reference for examining how the spinal cord and its associated nerve roots are arranged near the end of the vertebral canal. Because cord tissue and descending roots occupy related but distinct positions, this area helps biology and medicine consider how neural structures are organized as the spinal axis develops.
On magnetic resonance imaging, the conus medullaris serves as an anatomical landmark for assessing the terminal spinal cord and the nearby descending nerve roots. Interpretation depends on recognizing the relationship between the cord segments, the vertebral canal, and the roots that continue toward their exit points. This context helps connect an image with normal neural organization.
The key functional concerns involve sensory and motor changes together with bladder or bowel dysfunction. These findings are relevant because the terminal spinal cord and associated roots participate in communication with the lower limbs, pelvic organs, and perineum. In biology and medicine, this pattern helps relate clinical abnormalities to the affected lower spinal pathways.