ANATOMY

Detailed explanation-1: -In open circulatory system, blood is pumped by the heart through large vessels into open spaces or body cavities called sinuses.

Detailed explanation-2: -Blood can flow through vessels inside the body, such as arteries and veins. This type of circulation is called closed circulation. Open circulation happens when there are no vessels to contain the blood, and it flows freely through the cavities of the body.

Detailed explanation-3: -Open circulatory systems lack veins, so the hemolymph is returned to the heart through a series of efferent sinuses that ultimately join with the large mid-dorsal pericardial sinus. Blood pooled in the pericardial sinus is drawn into the heart through three pairs of ostia (pores) when the heart relaxes (Figure 32.17).

Detailed explanation-4: -Solution : The circulatory pattern in which blood pumped by the hert passed through large vessels into open spaces or body cavities (sinuses) is open circulatory system.

Detailed explanation-5: -Open circulatory systems pump blood into a hemocoel with the blood diffusing back to the circulatory system between cells. Blood is pumped by a heart into the body cavities, where tissues are surrounded by the blood.