Скачать или смотреть Concept of Mesenchyme - Mesenchyme vs. Mesoderm vs. Epithelium - Sources of Mesenchyme

Dive deep into the fundamental concept of Mesenchyme in this visual lecture by Dr. Aizaz from Medicovisual.com! Understand what mesenchyme truly is – a type of embryonic tissue composed of undifferentiated, irregularly shaped cells loosely scattered within a gel-like ground substance.

In this lecture, you will learn:

What is Mesenchyme? Discover its key characteristics: irregular cell shape, loose arrangement, high migratory potential, and its nature as embryonic connective tissue rich in stem cells.
Mesenchyme vs. Epithelium: Compare and contrast mesenchyme with epithelium, highlighting their opposite features in terms of cell shape (irregular vs. regular) and arrangement (loose vs. tightly packed), and migratory ability. Understand this using the analogy of scattered pebbles (mesenchyme) vs. a tightly built brick wall (epithelium).
Mesenchyme vs. Mesoderm: Clear up the common confusion! Learn why mesenchyme and mesoderm are NOT interchangeable terms, even though mesoderm is the primary source of mesenchyme. We'll discuss why not all mesoderm is mesenchyme, and not all mesenchyme originates from mesoderm.
Sources of Mesenchyme: Explore the origins of mesenchyme, identifying the mesoderm as the main source, followed by neural crest cells (derived from ectoderm), with minor contributions from the endoderm. Understand that all three germ layers contribute.
Epithelial-Mesenchymal Transition (EMT) & MET: Briefly touch upon the fascinating processes where epithelial cells can transform into mesenchymal cells (EMT) and vice-versa (MET), explaining how tissues like lateral plate mesoderm contribute to mesenchyme formation.
Functions & Importance: Appreciate the crucial role of mesenchyme's migratory ability in embryonic development, forming most non-epithelial structures like bone, cartilage, dermis, muscles, and connective tissues, and even contributing to some epithelial structures like renal tubules.