Question

What is an effective stroke ? Which stroke is called the recovery stroke as depicted during ciliary movement ?

Answer 1

A ciliary beat cycle consists of an effective stroke in which the extended cilium makes an oar-like movement towards one side, and a recovery stroke in which the cilium moves back by propagating a bend from base to tip

Answer 2

Effective Stroke:

• Effective stroke is process of movement of cilia actively towards a direction with a bow like a bend.
• This stroke requires energy and at this point, cilia are fully extended.
• But, after the effective stroke, the cilia needs to be recovered from extended position to a fully flexed position to prepare it for next effective stroke.
• This movement of recovering the cilia from the extended position to flexed position is called recovery stroke.
• Based, on condition it may be an active or passive process.