GENERAL HISTOLOGY

Detailed explanation-1: -The peristaltic heart of C. inflata, like other tunicates, reverses the direction of pumping every few minutes. During the branchial phase of heart action blood is drawn from the viscera into the posterior end of the heart and then pumped from the anterior end into the branchial basket via two vessels.

Detailed explanation-2: -Tunicates have a well-developed heart and circulatory system. The heart is a double U-shaped tube situated just below the gut. The blood vessels are simple connective tissue tubes, and their blood has several types of corpuscle.

Detailed explanation-3: -Water/vascular system There are a heart and some large blood vessels but no tiny capillaries. The tunicate heart is unusual in that it periodically reverses the direction in which it pumps the blood, but the reasons for this behaviour are unknown.

Detailed explanation-4: -Circulating blood cells are confined to vessels or ducts in the visible parts of the animal and retention of high molecular weight dextran in the vessels is comparable to that seen in vertebrates. These are characteristics of a closed circulatory system.

Detailed explanation-5: -Your heart pumps blood around the body all the time-about five litres (eight pints) of it-and this is called circulation.