NEET PG DENTAL EXAM

Detailed explanation-1: -Crustaceans have an open circulatory system meaning that all their blood is not contained within vessels, instead, blood is drawn in to the heart through holes called ostia, then pumped out again to circulate through the tissues and return again to the heart.

Detailed explanation-2: -Introduction. The decapod crustacean circulatory system is traditionally classed as an open system. It consists of a single-chambered ventricle that is suspended in a primer chamber, the pericardial sinus (Maynard, 1960). Hemolymph (blood) is pumped out into seven arteries (five arterial systems).

Detailed explanation-3: -Open circulatory systems are systems where blood, rather than being sealed tight in arteries and veins, suffuses the body and may be directly open to the environment at places such as the digestive tract. Open circulatory systems use hemolymph instead of blood.

Detailed explanation-4: -Open circulatory systems can be found in arthropods which include organisms such as insects, lobsters, and crabs and mollusks such as octopuses, oysters, snails, and slugs.