Circulatory System of Pigeon (With Diagram) | Chordata | Zoology
The birds have an efficient circulation, a high rate of metabolism and a high and constant temperature. The birds and mammals are the only vertebrates that have a complete separation of the respiratory and systemic circulations, making possible a high arteriolar pressure, which allows materials to reach the tissues rapidly. The circulatory system of pigeon includes heart, arteries, veins, the [...]