Circulatory System

The large arterial trunk that carries blood from the heart to be distributed by branch arteries through the body

• Aorta

• Arteriole

• Artery

• Atrium

Striated muscle fibers (cells) that form the wall of the heart; stimulated by the intrinsic conduction system and autonomic motor neurons is called....

• Cardiac muscle

• Atrium muscle

• Smooth muscle

• Circulation muscle

A measure of cardiac activity usually expressed as number of beats per minute

• Heart rate

• Cardiac output

• Blood pressure

• Arteriole rate

A chamber of the heart which receives blood from a corresponding atrium and from which blood is forced into arteries

• Ventricle

• Venule

• Vein

• Valve

What types of muscle help move blood around the body?

• The heart is the primary muscle that helps move blood & is made of cardiac muscle tissue. It is responsible for the circulation of blood & all the materials in it.

• The heart and lungs work together to get oxygen to the tissues. The heart pumps the blood, and the lungs put oxygen into it. This oxygen-rich blood then circulates throughout the body to nourish the cells; oxygen-depleted blood gets collected from the tissues to be oxygenated in the lungs

• The right side of the heart collects deoxygenated blood into its atrium & then passes it into the ventricle. The right ventricle then pushes the blood to the lungs, where the CO2 is dropped off and O2 is picked up.

• Three layers of thick, fairly rigid walls to allow them to expand/contract & to handle high pressure (blood has greatest pressure as it's leaving the heart)— one layer is smooth muscle

What is the relationship between the heart and the lungs?

• The heart is the primary muscle that helps move blood & is made of cardiac muscle tissue. It is responsible for the circulation of blood & all the materials in it.

• The heart and lungs work together to get oxygen to the tissues. The heart pumps the blood, and the lungs put oxygen into it. This oxygen-rich blood then circulates throughout the body to nourish the cells; oxygen-depleted blood gets collected from the tissues to be oxygenated in the lungs

• The right side of the heart collects deoxygenated blood into its atrium & then passes it into the ventricle. The right ventricle then pushes the blood to the lungs, where the CO2 is dropped off and O2 is picked up.

• Three layers of thick, fairly rigid walls to allow them to expand/contract & to handle high pressure (blood has greatest pressure as it's leaving the heart)— one layer is smooth muscle

How do the structure of arteries relate to their function in the body?

• The heart is the primary muscle that helps move blood & is made of cardiac muscle tissue. It is responsible for the circulation of blood & all the materials in it.

• The heart and lungs work together to get oxygen to the tissues. The heart pumps the blood, and the lungs put oxygen into it. This oxygen-rich blood then circulates throughout the body to nourish the cells; oxygen-depleted blood gets collected from the tissues to be oxygenated in the lungs

• The right side of the heart collects deoxygenated blood into its atrium & then passes it into the ventricle. The right ventricle then pushes the blood to the lungs, where the CO2 is dropped off and O2 is picked up.

• Three layers of thick, fairly rigid walls to allow them to expand/contract & to handle high pressure (blood has greatest pressure as it's leaving the heart)— one layer is smooth muscle

What is the pathway of blood in and out ofthe heart in pulmonary circulation?

• The heart is the primary muscle that helps move blood & is made of cardiac muscle tissue. It is responsible for the circulation of blood & all the materials in it.

• The heart and lungs work together to get oxygen to the tissues. The heart pumps the blood, and the lungs put oxygen into it. This oxygen-rich blood then circulates throughout the body to nourish the cells; oxygen-depleted blood gets collected from the tissues to be oxygenated in the lungs

• The right side of the heart collects deoxygenated blood into its atrium & then passes it into the ventricle. The right ventricle then pushes the blood to the lungs, where the CO2 is dropped off and O2 is picked up.

• Three layers of thick, fairly rigid walls to allow them to expand/contract & to handle high pressure (blood has greatest pressure as it's leaving the heart)— one layer is smooth muscle

What are the major Superior Vena Cava vein in the body and which regions do they serve?

• carries deoxygenated blood from the upper body (arms and head) back to the heart

• The volume of blood the heart pumps perminute (mL/min) out of the left side

• Normal cardiac output is needed to move oxygen and nutrients to all the body's tissues.

• If a person's cardiac output is lower than normal, the tissues can suffer or blood pressure can become unhealthy. An increased cardiac output from exercise can help strengthen the heart.

How do the structure of veins relate to their function in the body?

• Three layers of elastic/collapsible walls with valves to prevent the back flow of blood as it moves toward the heart— one layer is smooth muscle

• Thin walled (one cell layer thick) & microscopic in size to allow exchange of materials, often have pores to allow movement of materials

• blood is pushed out of the heart by the left ventricle & then it branches into all other arteries in the body

• this is the artery that runs across the ventral side of the heart, nourishing the cardiac tissue itself