GENERAL HISTOLOGY

Detailed explanation-1: -Some animals are known for their ability to regrow – or regenerate – body parts following dramatic injury. Starfish are among the most famous and dramatic examples, being able to grow an entire new body from just a single arm. Starfish also have the ability to regenerate neurons, something not seen in many animals.

Detailed explanation-2: -In arm autotomy, starfish typically shed arms with part of the central disk attached. This arm regenerates into a full starfish identical to the original through disk-dependent bidirectional regeneration. In some species, disk independent bidirectional regeneration is utilized to produce new starfish.

Detailed explanation-3: -"Those species of starfish with more than five arms are also descended from five-armed ancestors.” There are a number of possible explanations for how the body form of adult starfish came about.

Detailed explanation-4: -For starters, they are among the few species on the planet that can regenerate their arms. They can do this because of two reasons: Because they house their vital organs in their central disc, and because they have what scientists call ‘indeterminate stem cells’.