The Circulatory System

The arteries, which carry the blood away from the heart; the capillaries, which enable the actual exchange of water and chemicals between the blood and the tissues; and the veins, which carry blood from the capillaries back toward the heart.

1. Compare and contrast the structure of the three types of blood vessels.

Oxygenated blood flows back to the heart through the pulmonary vein, back into your left atrium. From the atrium, oxygen-rich blood empties into the left ventricle through another valve. The left ventricle is a powerful muscle that contracts to pump blood into the systemic circulation.

2. Explain the pathway of blood through the heart.

Systemic circulation is the movement of blood from the heart through the body to provide oxygen and nutrients, and bringing deoxygenated blood back to the heart. Oxygen-rich blood from the lungs leaves the pulmonary circulation when it enters the left atrium through the pulmonary veins.

3. Contrast pulmonary and systemic circulation. Identify which vessels carry oxygen-rich blood.

Ventricle, page 547, the two lower chambers are called the right and left BLANKs.

A hollow part or cavity in an organ, in particular.

Capillary, page 551, arteries and veins are connected by microscopic blood vessels called BLANKs.

Any of the fine branching blood vessels that form a network between the arterioles and venules.

Artery, page 550, BLANKs are blood vessels that carry blood vessels away from the heart.

Any of the muscular-walled tubes forming part of the circulation system by which blood is conveyed from the heart to all parts of the body.

Vein, page 550, the blood vessels that carry blodd back to the heart are called BLANKs

Any of the tubes forming part of the blood circulation system of the body, carrying in most cases oxygen-depleted blood toward the heart.

Atrium, page 547, the two upper chambers are called the right and left BLANKs.

Each of the two upper cavities of the heart from which blood is passed to the ventricles. The right atrium receives deoxygenated blood from the veins of the body; the left atrium receives oxygenated blood from the pulmonary vein.

Coronary Circulation, page 547, BLANK is the flow if blood to and from the tissues of the heart.

The circulation of blood in the blood vessels of the heart muscle.

Systemic Circulation, page 549, oxygen-rich blood moves to all of your organs and body tissues, except the heart and lungs, by BLANK, and oxygen-poor blood returns to the heart.

The part of the cardiovascular system which carries oxygenated blood away from the heart to the body, and returns deoxygenated blood back to the heart.

Pulmonary Circulation, page 548, the flow of blood through the heart to the lungs and back to the heart is BLANK.

The portion of the cardiovascular system which carries deoxygenated blood away from the heart, to the lungs, and returns oxygenated blood back to the heart.