Q4 Zoology

The _________ system transports nutrients, oxygen, carbon dioxide, and other materials to the body cells, consisting mainly of the blood, the blood vessels, and the heart. (1 pt.)

Blood is composed of a liquid component called _________. (1 pt.)

Blood is composed of solid components called _________. (Please answer in plural form, two words) (1 pt.)

_________ are flexible structures that maintain blood flow in one direction. (Please answer in plural form, two words) (1 pt.)

The left and right _________ are the upper chambers of the heart which receive blood from the outside of the heart. (Please answer in plural form) (1 pt.)

How many chambers does the heart possess? (1 pt.)

• A One

• B Two

• C Three

• D Four

Which of the following carry blood back to the heart? (1 pt.)

• A Arteries

• B Veins

• C Capillaries

What is the primary function of white blood cells? (1 pt.)

• A To fight diseases and protect against bacteria and viruses

• B To transport oxygen

• C To clot blood

What role do platelets play in the circulatory system? (1 pt.)

• A To transport oxygen

• B To initiate blood clotting

• C To fight infections

Which of the following blood vessels is the largest vein in the body? (1 pt.)

• A Aorta

• B Pulmonary vein

• C Jugular vein

• D Inferior vena cava