MEDICAL PHYSIOLOGY

Detailed explanation-1: -Arthropoda: Animals belonging to this phylum possess a hard chitinous exoskeleton. The exoskeleton is shed periodically during the life cycle and this phenomenon is called ecdysis or moulting.

Detailed explanation-2: -(2) Ecdysis, or the actual shedding of the old exoskeleton, takes place when the old exoskeleton splits along preformed lines.

Detailed explanation-3: -Amphibians and reptiles shed layers of old, dead skin in large, visible pieces, some molting the entire old skin in one piece. This process is called ecdysis. Ecdysis is natural for the renewal of skin but is not necessary to allow growth, as it is in arthropods and crustaceans.

Detailed explanation-4: -Ecdysis is the process of an arthropod moulting its exoskeleton. Moulting is necessary as the arthropod exoskeleton is inflexible and so, to grow larger, arthropods must moult. Moulting is a critical but vulnerable time for arthropods.

Detailed explanation-5: -: the act of molting or shedding an outer cuticular layer.