Front

What is the primary function of the heart in the cardiovascular system?

Back

The heart propels blood through the system.

Front

What surrounds the heart and provides protection?

Back

The pericardium, a fibrous sac lined by serous mesothelium.

Front

What are arteries and their role in the cardiovascular system?

Back

Arteries are vessels that carry blood away from the heart to the tissues.

Front

What is the function of capillaries in the cardiovascular system?

Back

Capillaries are the sites of exchange of O2, CO2, nutrients, and waste products between blood and tissues.

Front

What is the microvasculature?

Back

A complex network of thin, anastomosing tubules formed by capillaries in almost every organ.

Front

How do veins function in the cardiovascular system?

Back

Veins carry blood back to the heart from the body.

Front

What are the two major divisions of the circulatory system?

Back

Pulmonary circulation and systemic circulation.

Front

What is the endothelium?

Back

A simple squamous epithelium lining the internal surface of blood and lymphatic systems.

Front

What is the role of endothelial cells in the cardiovascular system?

Back

They maintain a selectively permeable barrier and regulate white blood cell movement.

Front

What are the three major layers of the heart chambers?

Back

Endocardium, myocardium, and epicardium.