Aneurysm is caused due to circumscribed dilation of an artery.

Erythroblastosis foetalis are the conditions where newborn infants suffer from anaemia, jaundice, enlarged spleen or liver and in severe cases, stillbirth or death soon after birth.

Lymph nodes are oval or bean-shaped bodies placed in the lymphatic vessels. They act as filters and are sites where lymphocytes are formed. The main groups of lymph nodes lie in the neck, axilla, thorax, abdomen and groin.

Myoglobin is an iron- and oxygen-binding protein found in the muscle tissue of vertebrates in general and in almost all mammals. It is related to hemoglobin, which is the iron- and oxygen-binding protein in blood, specifically in the red blood cells.

 Sinus venosus is a characteristic of fishes, amphibians and reptiles.

The vascular system of frog is well-developed closed type. Frogs have a lymphatic system also. The blood vascular system involves heart, blood vessels and blood.

The middleman between blood and tissues is lymph.

Lacteals are the lymphatic vessels arising in the intestinal villi.

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It provides nourishment to the tissues of the heart through the capillaries that are located in the heart.

Biconvex and nucleated red blood cells, heart with more than two perfect chambers, closed type of circulation and oviparity are all features of salamander.

Plasma proteins like albumin and globulin are made by the liver.

The heart of a cockroach is elongated, thick, muscular, tubular and 13-chambered.

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