GENERAL HISTOLOGY

EPITHELIUM

CILIA

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The bending movements of cilia and flagella:
A
Involves dynein action of microfilaments
B
are associated with microtubules
C
are produced when dynein motors pull adjacent microtubules doublets past each other.
D
involve the alternate assembly and disassembly of actin filaments.
Explanation: 

Detailed explanation-1: -Abstract. Cilia and flagella are microtubule (MT)-based organelles that extend from the surface of eukaryotic cells. Ciliary and flagellar movements are generated by MT sliding with axonemal dynein motors.

Detailed explanation-2: -Cyclical beating is a prominent feature of cilia and flagella. The regular arrays of dynein molecules on the doublet microtubules are responsible for the movement, in which the function of dynein is to move the adjacent doublet microtubule by using the energy of ATP hydrolysis.

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