Question

Functional significance of giant nerve fibers in mollusks

Answer 1

The functional significance of giant fibers in mollusks


The giant nerve fiber in mollusks are motor axons which controls the effect-or organs thereby control their motor activities e.g swimming and locomotion.

The fibers are in motor axons, and that on account of their enormous size they provide unique opportunities for study of the functioning of single neuromuscular units.

Mollusks in which typical molluscan foot surrounds head and forms arm and tentacles, mantle surrounds mantle cavity and is part of locomotory system.

Central nerves system is highly developed forming true brain, encased in cartilaginous cranium, mouth contains pair like parrot jaws (beaks).

The re-tractor muscles  of the head and funnel are very suitable for myographic purposes.

Answer 2

The functional significance of giant nerve fibres in the molluscs is that they control the motor axons that are responsible for swimming and locomotion activities (Motor activities).

It also regulates the moment of water inside and outside the system thereby causing the organism to move to and fro. The action potentials that are generated in these giant nerve fibres also help the organism to escape with a flip from the predators.