Cardiovascular System

Question 1

Arteries

Answer 1

Arteries are the blood vessels that deliver oxygen-rich blood from the heart to the tissues of the body.

Question 2

Blood vessels

Answer 2

Blood vessels are channels that carry blood throughout your body. They form a closed loop, like a circuit, that begins and ends at your heart. Together, the heart vessels and blood vessels form your circulatory system. Your body contains about 60,000 miles of blood vessels.

Question 3

Capillaries

Answer 3

Capillaries are tiny blood vessels that transport blood, nutrients and oxygen to cells in your organs and body systems. Capillaries are the smallest blood vessels in your vascular system.

Question 4

Deoxygenated

Answer 4

To remove oxygen from.

Question 5

Heart

Answer 5

The Heart is a hollow muscular organ that pumps the blood through the circulatory system by rhythmic contraction and dilation.

Question 6

Oxygen

Answer 6

Oxygen is a colorless, odorless reactive gas, the chemical element of atomic number 8 and the life-supporting component of the air.

Question 7

Oxygenated

Answer 7

To be supplied, treated, or enriched with oxygen.

Question 8

Pulmonary circulation

Answer 8

Pulmonary circulation includes a vast network of arteries, veins, and lymphatics that function to exchange blood and other tissue fluids between the heart, the lungs, and back.

Question 9

Systemic circulation

Answer 9

The systemic circulation provides the functional blood supply to all body tissue. It carries oxygen and nutrients to the cells and picks up carbon dioxide and waste products.

Question 10

Veins

Answer 10

Veins are blood vessels in humans, and most other animals that carry blood towards the heart.

Question 11

Size of heart

Answer 11

The heart weighs between 7 and 15 ounces (200 to 425 grams) and is a little larger than the size of your fist.

Question 12

How many chambers does the heart have?

Answer 12

A typical heart has two upper and two lower chambers. The upper chambers, the right and left atria, receive incoming blood. The lower chambers, the more muscular right and left ventricles, pump blood out of the heart. The heart valves, which keep blood flowing in the right direction, are gates at the chamber openings.

Question 13

Location of heart

Answer 13

Center of chest, in between both longs at an angle pointing towards the left hip and right shoulder.

Question 14

Apex

Answer 14

The apex (the most inferior, anterior, and lateral part as the heart lies in situ) is located on the midclavicular line, in the fifth intercostal space.

Question 15

Endocardium

Answer 15

The endocardium is the innermost layer of the heart and lines the chambers and extends over projecting structures such as the valves, chordae tendineae, and papillary muscles.

Question 16

Myocardium

Answer 16

Myocardium is involuntary, striated muscle that constitutes the main tissue of the wall of the heart.

Question 17

Pericardium

Answer 17

The pericardium is a membrane, or sac, that surrounds your heart. It holds the heart in place and helps it work properly.

Question 18

Atria

Answer 18

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.

Question 19

Ventricles

Answer 19

A ventricle is one of two large chambers toward the bottom of the heart that collect and expel blood towards the peripheral beds within the body and lungs. The blood pumped by a ventricle is supplied by an atrium, an adjacent chamber in the upper heart that is smaller than a ventricle.

Question 20

Tricuspid valve

Answer 20

The tricuspid valve is on the right side of the heart. It separates the upper and lower chambers, also known as the right atrium and ventricle. The valve allows deoxygenated blood to flow through both of the chambers. The right ventricle pumps blood to the lungs, where it will be oxygenated.

Question 21

Pulmonary valve

Answer 21

The pulmonary valve is one of four valves that regulate blood flow in the heart. The valve lies between the lower right heart chamber (right ventricle) and the pulmonary artery.

Question 22

Mitral valve

Answer 22

The mitral valve is located between the upper left heart chamber (left atrium) and the lower left heart chamber (left ventricle). A healthy mitral valve keeps your blood moving in the right direction.

Question 23

Aortic valve

Answer 23

The aortic valve—the main outflow valve for the left heart—is the valve between the heart and the body. The aortic valve opens when the left ventricle squeezes to pump out blood, and closes in between heart beats to keep blood from going backward into the heart.

Question 24

Blood Pressure

Answer 24

The pressure of the blood in the circulatory system, often measured for diagnosis since it is closely related to the force and rate of the heartbeat and the diameter and elasticity of the arterial walls.

Question 25

Pulse

Answer 25

A rhythmic throbbing of the arteries as blood is pumped through them, typically, the best place to feel it is in the wrist or neck.