transport in animals

The circulatory systems are...

• open

• closed

• intermediate

The fish heart has ... cavities and is pierced ...

• two... only by venous blood.

• four ... by venous and arterial blood alternately.

• two ... by venous and arterial blood, alternately.

Which type of blood vessel has a thick elastic wall?

• Veins

• Arteries

• Capillaries

The animal in which the exchanges illustrated in the figure occur has a circulatory system ..... , which allows a greater ..... of blood.

Through which chamber does oxygenated blood enter after leaving the lungs?

• Left ventricle

• Right ventricle

• Left atrium

Choose the options that reflect the advantages of double circulation.

• Blood travels through the heart twice for each complete circuit of the body.

• Does not require complex organs.

• Can incrase pressure of a blood flow.

• Slow movement of blood.

How many fluids circulate in an open circulatory system?

• None

• One

• Two

What is the fluid that circulates in an open circulatory system?

• Blood

• Blood and lymph

• Hemolymph

what type of circulatory system does an earthworm have?

• Open circulatory system

• Closed circulatory system

• Simple circulatory system

What is the role of arteries and veins in the systemic circulatory system?

• Transporting blood to all parts of the body

• Transport of blood to the lungs

• Transporting blood to the lungs and all parts of the body