The heart is divided into two halves by a thick wall of muscle called a _____________________.

True or false? The ventricles, the lower chambers of the heart are heavier and stronger than the atria.

A. The _____________ is the largest blood vessel in the body carries blood away from the heart with great force.

B. Oxygen-rich blood from the lungs enters and fills the ___________________.

C. The right ventrical squeezes powerfully and sends blood into the ___________________ which lead to the lungs

D. The _________________________ is the lower chamber in the heart that pumps blood to the entire body.

E. The _________________________ is the lower chamber in the heart that pushes blood into the lungs.

F. Oxygen-poor blood from the body enters and fills the ___________________.

True or False? The bluish-looking blood vessels that carry blood TO the heart are called arteries.

The pale gold fluid called ______________ makes up a little more than half of our blood.

Which of the following is hemoglobin NOT responsible for?

The special cells found in the spongy tissue of the largest bones in our body are called ___________________.

Small discs that break off of very large cells are called ____________________ and are responsible for clotting blood.

Which of the following lives for only about two weeks and fights disease?

Which type of white blood cell is responsible for producing antibodies?

Which type of white blood cell acts something like Pac-Man, moving freely around the body, attacking microscopic invaders in the blood?

Which type of white blood cells are twice the size as red blood cells, the most common, and are attracted to chemicals released by bacteria?

The lungs are spongy filled with hundreds of millions of tiny air-filled sacs called ________________________.

Our bodies have double circulation, one to the lungs and one to the rest of the body; which type of circulation travels to the lungs?