Animal Circulation

Which cells transport oxygen to body tissues and exchange it for carbon dioxide?

• Leukecytes

• Erythrocytes

• Platelets

• Plasma

How many chambers does the heart in amphibians have?

• 2

• 1

• 4

• 3

How many chambers is the heart of mammals divided into?

• 3

• 5

• 4

• 2

What is the function of the right auricle and ventricle in mammal's heart?

• To pump blood to the lungs.

• To facilitate the flow of blood from the atrium to the ventricle.

• To prevent the backward flow of blood.

• All above

What type of circulation do birds have?

• Simple circulation

• Double circulation

• Open circulation

• Closely circulation

Can the atria in a reptile's heart be divided?

• Yes, the atria is divided in two chambers.

• No, the heart of reptiles is undivided.

• Yes, in reptiles, the atria are divided into three chambers.

• No, in a reptile's heart, the atria are not divided; they are connected to the ventricle.

The circulatory system of birds is similar to that of...

• Reptiles

• Anphibians

• Fish

• Human

How many auricles do fish have?

• Fish have 2 auricles.

• Fish have 1 auricle.

• Fish have 3 auricles.

• Fish do not have chamers.

What is the function of the capillarities?

• To transport oxygen in the bloodstream.

• To exchange gases between the lungs and the atmosphere.

• To connect arteries and veins.

• To facilitate nutrient and gas exchange with body tissues.

Which of the following statements about arteries is true?

• Arteries carry oxygen-depleted blood away from the heart.

• Arteries have thin, elastic walls that can expand to accommodate blood flow.

• Arteries typically have valves to prevent the backflow of blood.

• Arteries are responsible for nutrient exchange in the lungs.