GENERAL HISTOLOGY

Detailed explanation-1: -They have two stomachs…and the way they eat might make your skin crawl. The anatomy of a sea star’s digestive system is quite alarming, and has an incredibly unique two-part stomach system.

Detailed explanation-2: -Stomach. A sea star has 2 stomachs, the cardiac stomach and the pyloric stomach. It can push the cardiac stomach out of its mouth, in the centre of its underside, to engulf prey or insert it into prey (between 2 shells, for example). The stomach then secretes a powerful digestive enzyme to break down the prey.

Detailed explanation-3: -Due to their tiny mouth on the underside of their body, starfish have adapted an ingenious way of eating things larger than it can fit in their mouth. They have a stomach that can digest food outside their body, so that it can fit in their mouth.

Detailed explanation-4: -The pyloric stomach is closest to the aboral side of the starfish and is on top of the cardiac stomach which is directly over the mouth on the ventral side of the starfish. Starfish eat many things, like barnacles, snails, sea urchins, clams, and mussels.

Detailed explanation-5: -Most sea stars have five arms, although some can grow as many as 50 arms.