Which of the following is not a function of the Circulatory System?

• It transports energy and nutrients to cells in the body.

• It transports oxygen from the lungs to other tissues.

• It removes carbon dioxide from these tissues.

• It excretes urea

In an --------, blood is only partially contained within a system of blood vessels as it travels through the body.

• open circulatory system

• closed circulatory system

• Single loop circulation

• Double loop circulation

In an --------, blood circulates entirely within blood vessels that extend throughout the body.

• open circulatory system

• closed circulatory system

• Single loop circulation

• Double loop circulation

The circulation loop shown by this diagram is:

• Single loop circulation

• Double loop circulation

Most vertebrates with gills (such as fish) have a ------------------- with a single pump that forces the blood around the body in one direction.

• Single loop circulation

• Double loop circulation

The circulation loop shown by this diagram is:

• Single loop circulation

• Double loop circulation

The circulation loop found in mammals including us (humans):

• Single loop circulation

• Double loop circulation

---- have four-chambered hearts

• Amphibians

• Reptiles

• Mammals

• Birds

---- have three chambers: two atria and one ventricle. Oxygenated and deoxygenated blood mix.

• Amphibians

• Reptiles

• Mammals

• Birds

-------- have three-chambered heart with partial partition in their ventricle

• Amphibians

• Reptiles

• Mammals

• Birds