Animals: Circulation & Respiration

Vertebrates, cephalopods, and annelids are examples of which circulatory system?

• Open

• Closed

Select the 3 main parts of a closed circulatory system.

• Blood

• Blood vessels

• Heart

• Spleen

Veins carry blood away from the heart.

• True

• False

The atria fills with blood while the ventricles pump blood out.

• True

• False

If blood travels to the heart 1 time throughout the circuit, it is considered a single circuit.

• True

• False

The mixing of de-oxygenated and oxygenated blood in the heart is unique to which organisms?

• Amphibians

• Fish

• Mammals

The mammalian has 4 chambers.

• True

• False

Where is the Sino-Atrial node located?

• The right atria

• The left atria

• The right ventricle

• The left ventricle

The left side of the heart has de-oxygenated blood while the right side has oxygenated blood.

• True

• False

You are a drop of blood in the left ventricle. What valve are you about to go through?