1. Man
2. Frog
3. Birds
4. Earthworm
Earthworm
1. Sinus venosus, right auricle, left auricle, truncus arteriosus
2. Truncus arteriosus, ventricle, right auricle, left auricle
3. Sinus venosus, left auricle, truncus arteriosus, right auricle
4. Sinus venosus, right auricle, ventricle, truncus arteriosus
Sinus venosus, right auricle, ventricle, truncus arteriosus
1. Substances must cross a vessel wall to reach the cells of mammals, but the blood of insects is in direct contact with their cells
2. Blood moves randomly in an insect, but in a definite path in a mammal
3. Insects do not transport oxygen in their transport system, whereas mammals do
4. Mammals have much higher blood pressure than that of insects
Blood moves randomly in an insect, but in a definite path in a mammal
1. Liver
2. Bone marrow
3. Intestinal mesentery
4. Spleen
Spleen
1. Brachial vein
2. Femoral vein
3. Sciatic vein
4. External jugular vein
Femoral vein
1. Atria contract
2. Atria relax
3. Ventricles contract
4. Ventricles relax
Atria relax
1. Biliverdin and bilirubin
2. Globulin
3. Biliverdin
4. Calcium
Biliverdin and bilirubin
1. Rental arterioles
2. Renal vein and renal portal vein
3. Renal veins
4. Bidder’s canal
Renal veins
1. 2, 4
2. 4, 1
3. 4, 4
4. 1, 1
4, 1
1. In the double circulation, all the blood going to the tissue is oxygenated, whereas in the single circulation it is not
2. In the double circulation, the blood can transport more types of substances
3. In the double circulation, the blood is at higher pressure when it enters the body faster
4. In a double circulation, there are twice as many blood vessels servicing the body tissues
In the double circulation, the blood is at higher pressure when it enters the body faster