Cardiovascular+System+KR

=Cardiovascular System=

the heart and the blood vessels.
 * 1. What are the two parts of the cardiovascular system?**


 * (2) What are the functions of the cardiovascular system?**
 * Move Blood Through blood Vessels
 * blood vessels transport the blood
 * refresh the blood
 * regulate blood flow

arteries, capillaries, and veins.
 * (3) What are the types of blood vessels?**

The structure of an artery has three layers. The innermost layer is a then layer of cells called **endothelium**, The middle layer is made up of tissue and the outer layer is thinner
 * (4) What is the structure and function of these vessels?**

The double pump is because the right ventricle of the heart sends blood through the lungs, and the left ventricle sends blood throughout the body.
 * (5) Why is the heart a double pump?**

The lub sounds when the blood is pushed through the ventricle. The dup sound occurs when the ventricles relax.
 * (6) What causes the "lub" and the "dup" of the heart sounds?**

The **SA (sinoatrial) node**
 * (7) What keeps the heart beat regular?**

Their Heart Rate
 * (8) What does the pulse rate of a person indicate?**

Blood pressure
 * (9) What accounts for blood flow in the arteries?**

Skeletal muscle pumps
 * (10) What accounts for blood flow in the veins?**