Mechanism of Ciliary Movement || Structure of Cilia || How do Cilia Move? || Mucociliary Clearnace

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Cilia and Ciliary Movements:
Cilia are small, slender, and hair-like structures on the surface of cells. A cilium is made up of a central axoneme, covered by the cell membrane. The axoneme, is made up of 2 central microtubules, and 9 pairs of microtubules surrounding it. Each neighboring pair at the periphery, is connected by dynein proteins. At the base, the microtubules are connected to the basal body. In ciliary movement, a rapid forward stroke, moves the fluid in the forward direction. And backward stroke, slowly brings back the cilia to the initial position, without producing much effect on the fluid. The bending of cilia, is produced by the crawling of one pair of tubules, over its adjacent pair. The ciliary movement on the epithelial cells of the respiratory tract, moves the mucus towards the pharynx for clearance. And in the fallopian tube, it moves the ovum from the ovary, to the uterus.

Chapter
00:00 Introduction to Cilia
00:30 Structure of a Cilium
01:54 Ciliary Movements
02:48 Mechanism of Ciliary Movement
04:30 Importance of Ciliary Movement in Body
05:23 Summary

Dr Vipul Navadiya

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