Скачать или смотреть Development of Spinal Cord - Myelination - Neurembryology part 3

Embryology of Spinal Cord and Process of Myelination by Schwann cells and Oligodendroocytes is explained in this visual lecture by Dr. Aizaz from MedicoVisual.
Embark on a captivating exploration of embryology as we unravel the intricate formation of the spinal cord from its humble beginnings as the neural tube. This comprehensive visual lecture guides you through each step of this remarkable transformation, utilizing 3D models, clear diagrams, and engaging animations to illuminate even the most complex concepts.

Histogenesis of Neural Tube:    • 3D Histogenesis of Neural Tube - Neuroembr...  

Saltatory Conduction:    • Saltatory conduction - How nerve impulse j...  

Journey from Simple Tube to Complex Structure:

We begin by revisiting the neural tube, the embryonic precursor to the central nervous system. You'll gain a deep understanding of its three fundamental layers – the ependymal, mantle, and marginal zones – and how they differentiate to form the foundation of the spinal cord.

Witness the Birth of Sensory and Motor Pathways:

Delve into the fascinating reorganization of the mantle zone, witnessing the emergence of the alar and basal plates. These crucial structures lay the groundwork for the spinal cord's sensory and motor functions, respectively. We'll explore how the alar plate gives rise to the dorsal gray column, responsible for receiving sensory information, while the basal plate develops into the ventral gray column, commanding motor output.

Unraveling the Intricacies of Spinal Nerves:

Follow the development of dorsal and ventral roots, the building blocks of spinal nerves, and understand how they converge to form these vital communication pathways. Discover the crucial role of neural crest cells, those versatile wanderers of the embryonic world, in forming the dorsal root ganglia, essential for relaying sensory information.

Myelination: The Key to Rapid Nerve Impulses:

Uncover the fascinating process of myelination, where axons are wrapped in insulating sheaths, dramatically increasing the speed of nerve impulse transmission. We'll compare and contrast the roles of Schwann cells, responsible for myelination in the peripheral nervous system, and oligodendrocytes, their counterparts in the central nervous system.

Navigating the Spinal Cord's Dynamic Landscape:

Witness the dynamic positional changes the spinal cord undergoes during development. Understand the clinical significance of structures like the conus medullaris, the tapered end of the spinal cord, and the cauda equina, the bundle of nerve roots resembling a horse's tail. We'll also explore the filum terminale, a delicate ligament anchoring the spinal cord, and its crucial role in maintaining its stability.

Visual Mnemonics and Engaging Explanations:

Dr. Aizaz, your guide through this intricate journey, employs memorable visual mnemonics, like the cat-shaped illustration for remembering the functions of alar and basal plates. His clear explanations and engaging teaching style make even the most complex concepts accessible and enjoyable.

This video is an invaluable resource for:

Medical students seeking a comprehensive understanding of spinal cord development.
Biology enthusiasts eager to explore the wonders of embryology.
Anyone curious about the intricate processes that shape the human body.

Chapters:
00:00 Intro
02:22 Alar plate and Basal Plate formation
04:01 Formation of Spinal Cord
09:05 Spinal Nerves
18:08 Myelination of Nerve fibers
24:54 Positional Changes in the Spinal Cord
31:38 Cauda Equina vs. Conus Medullaris vs. Filum Terminale